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MTC Connectors with Fixed Contacts
1.0
1.1
Introduction
Scope. This specification covers the design, performance and qualification
requirements for applicable Raychem MTC (Mass Termination Connector) connectors
using fixed contacts and suitable for use with round wire or flat conductor cable. This
specification forms a part of Master Specification C-6100 for the Raychem Integrated
Interconnection System(12S).
1.2
Description. The Raychem MTC connectors covered by this specification are high
density, environment-resistant connectors used to interconnect both round wires and
flat conductor cables. These connectors consist of environment-resistant plugs and
receptacles. Options include electromagnetic effects (EME) shielding and pressure
sealing. The shells assure proper orientation of the mating halves and electrical
continuity between shells prior to contact engagement. Connectors covered by this
specification have inserts holding fixed, size 26 or size 22 contacts arranged in rows.
Removable inserts consist of one or more pieces, each with a single row of contacts.
Fixed inserts contain one or more rows of contacts. Contact terminals for solder
termination are encapsulated to provide environmental resistance. For solderless wrap
termination, contacts have wrap post terminals.
1.3
Classification. Connectors covered by this specification are classified in accordance
with 1.3.1 and 1.3.2.
1.3.1
Connectors.
a. Series: MTC50:
MTC100:
b. Types: Plugs:
Size 26 contacts on 0.05 inch nominal centers
Size 22 contacts on 0.1-inch nominal centers
Cable mounting
Rack mounting
Receptacles: Cable and panel mounting
Flanged, panel mounting
Box mounting
c. Classes:
Environment resistant
Environment resistant, EME shielded
Environment resistant, pressure maintaining
d. Shelf Finish:
Anodic (nonconductive)
Electroless nickel (conductive)
Cadmium-plated (conductive)
e. Shell Size:
Size 1: 1-inch nominal insert width
Size 2: 2-inch nominal insert width
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1.3.2
Inserts.
a. Types:
b. Contact Style:
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Removable
Fixed
Pin
Socket
c. Termination Style and Temperature Rating:
Solder tab for round wire, -65 to 125°C
Solder tab for round wire, -65 to 150°C
Solder tab for flat conductor cable, -65 to 125°C
Wrap post for solderless connection, -65 to 150°C
d. Contact Size:
Size 26: for MTC50 series connectors
Size 22: for MTC1 00 series connectors
1.4
Temperature Range. Connectors covered by this specification are suitable for use over
the temperature range -65° to 150°C or -65° to 125°C, depending upon the termination
style (see 1.3.2). Connectors are rated for 1000-hour service when the operating
temperature of the connector is the maximum rated temperature. Operating
temperature is the maximum temperature reached by any point of the connector as a
result of electrical current flow and ambient temperature.
1.5
Units. SI units in parentheses are for information only.
1.6
Solderability of Wire and Cable for Solder Style Terminations. Wire and cable
conductors for termination to solder style MTC terminals shall be solderable at the time
of termination as specified in either 1.6.1 or 1.6.2.
1.6.1
Round Wire Solderabilty. Round wires shall be capable of meeting the solderability
requirements of MIL-STD-202, Method 208, using type RMA flux, except that steam
aging shall not be required. Round wires which do not meet this requirement must be
capable of achieving a 95percent minimum solder coating when dip tinned using type
RA flux and Sn63 solder, and must be pretinned before termination. (Refer to MILSTD-202, Method 208, for definition of 95- percent solder coating.)
1.6.2
Flat Conductor Cable Solderability. Flat conductor cables must be capable of
achieving a 95-percent minimum solder coating when dip tinned using type RA flux
and Sn63 solder, and must be pretinned before termination. (Refer to MIL-STD-202,
Method 208, for definition of 95-percent solder coating.)
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2.0
2.1
Applicable Documents
Issues of Documents. The following documents, of the issue in effect on date of order
or request for proposal, form a part of this specification to the extent specified herein.
This specification takes precedence over the referenced documents.
2.2
Department of Defense.
Specifications
Military
MIL-G-3056
MIL-H-5606
MIL-T-5624
MIL-L-6082
MIL-L-7808
MIL-A-8625
MIL-E-9500
MIL-F-14256
MIL-F-18240
MIL-L-23699
MIL-C-26074
MIL-G-45204
MIL-H-83282
MIL-P-83800
MIL-C-85485
Federal
QQ-P-35
TT-M-261
TT-T-291
QQ-P-416
QQ-C-530
QQ-S-571
QQ-A-591
QQ-B-613
P-D-680
TT-1-735
QQ-B-750
QQ-S-763
Standards
Gasoline, Automotive, Combat, Metric
Hydraulic Fluid, Petroleum Base; Aircraft, Missile and Ordnance
Turbine Fuel, Aviation, Grades JP-4, JP-5 and JP-5/JP-8 ST
Lubricating Oil: Aircraft Reciprocating Engine (Piston)
Lubricating Oil: Aircraft Turbine Engine, Synthetic Base, NATO
Code Number 0-148
Anodic Coatings, for Aluminum and Aluminum Alloys
Ethylene Glycol, Technical
Flux, Soldering, Liquid (Rosin Base)
Fastener, Externally Threaded, 250°F, Self-Locking Element For
Lubricating Oil, Aircraft Turbine Engine, Synthetic Base
Coatings, Electroless Nickel, Requirements For
Gold Plating, Electrodeposited
Hydraulic Fluid, Fire-Resistant, Synthetic Hydro carbon Base,
Aircraft, Metric, NATO Code Number H-537
Propylene Glycol, Industrial Grade
Cable, Electric, Filter Line, Radio Frequency Absorptive
Passivation Treatments for Corrosion-Resisting Steel
Methyl Ethyl Ketone, Technical
Thinner, Paint, Mineral Spirits, Regular and Odorless
Plating, Cadmium (Electrodeposited)
Copper-Beryllium Alloy Bar, Rod, and Wire (Copper Alloy
Numbers 172 and 173)
Solder, Tin Alloy: Tin-Lead Alloy; and Lead Alloy
Aluminum Alloy Die Castings
Brass, Leaded and Nonleaded: Flat Products (Plate, Bar, Sheet, and
Strip)
Dry Cleaning Solvent
Isopropyl Alcohol
Bronze, Phosphor; Bar, Plate, Rod, Sheet, Strip, Flat Wire, and
Structural and Special Shaped Sections
Steel Bars, Wire, Shapes, and Forgings, Corrosion-Resisting
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Military
MIL-STD-105
MIL-STD-202
MIL-STD-454
MIL-STD-1130
MIL-STD-1344
MIL-STD-45662
Standards
Federal
FED-STD-H28
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Sampling Procedures and Tables for Inspection by Attributes
Test Methods for Electronic and Electrical Component Parts
Standard General Requirements for Electronic Equipment
Connections, Electrical, Solderless Wrapped
Test Methods for Electrical Connectors
Calibration Systems Requirements
Screw-Thread Standards for Federal Services
(Copies of Department of Defense documents may be obtained from the Naval
Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120-5099.)
2.3
American Society for Testing and Materials (ASTM).
D 256
Impact Resistance of Plastics and Electrical Insulating Materials
A 484
General Requirements for Stainless and Heat-Resisting Wrought Steel
Products (Except Wire)
D 570
Water Absorption of Plastics
A 582
Free-Machining Stainless and Heat-Resisting Steel Bars, Hot-Rolled or
Cold Finished
D 638
Tensile Properties of Plastics
D 648
Deflection Temperature of Plastics Under Flexural Load
D 790
Flexural Properties of Unreinforced and Reinforced Plastics and Electrical
Insulating Materials
F 814
Specific Optical Density of Smoke Generated by Solid Materials for
Aerospace Applications
(Copies of ASTM publications may be obtained from the American Society for Testing
and Materials, 1916 Race Street, Philadelphia, PA 19103.)
2.4
Underwriters Laboratories (UL).
UL94
Tests for Flammability of Plastic Materials
(Copies of UL publications may be obtained from Underwriters Laboratories Inc.,
Publications Stock, 333 Pfingsten Road, Northbrook, IL 60062.)
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National Aeronautics and Space Administration (NASA).
SP-R-0022A
Vacuum Stability Requirements of Polymeric Material for
Spacecraft Application
(Copies of NASA documents may be obtained from National Aeronautics and Space
Administration, Lyndon B. Johnson Space Center, Mail Code: JM 62, Houston, Texas
77058.)
2.7
Raychem Corporation.
C-6100
System Overview and General Requirements for Integrated
Interconnection System(12S)Components
ES 61115
MTC100 Connector Assembly and Installation Procedures
ES 61257
MTC50 Connector Assembly and Installation Procedures
SOP0001
SPC Standard Operating Procedure
(Copies of Raychem documents may be obtained from Raychem Corporation, 300
Constitution Drive, Menlo Park, CA 94025.)
3.0
3.1
Requirements
Specification Control Drawings. The requirements for connectors under this
specification shall be as specified herein and in the applicable specification control
drawing. In the event of conflict between the requirements of this specification and
those of the specification control drawing, the latter shall govern.
3.2
Classification of Requirements. The requirements for the connectors are classified
herein as follows:
Requirement
Paragraph
Qualification
Materials
Design and Construction
Performance
Product Identification
Workmanship
3.3
3.4
3.5
3.6
3.7
3.8
3.3
Qualification. Connectors furnished under this specification or listed on Qualified
Products List C-6111-QPL shall be products which are qualified to this specification in
accordance with the requirements of Specification C-6100.
3.4
Materials Requirements. All materials used in the manufacture of these connectors
shall be of a quality and form suited for the purpose intended.
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3.4.1
Dissimilar Metals. When dissimilar metals are used in intimate contact with each
other, protection against electrolytic corrosion shall be provided as specified in MILSTD-454, Requirement 16.
3.4.2
Fungus Resistance. Finishes and materials shall be fungus-inert in accordance with
MIL-STD-454, Requirement 4, and encompassing the fungus species listed in MILSTD-810, Method 508.
3.4.3
Hydrolytic Stability. All nonmetallic materials shall be selected to meet the hydrolytic
reversion resistance requirements specified in MIL-STD-454, Requirement 47.
3.4.4
Vacuum Stability. Connector assemblies shall meet the vacuum stability requirements
of NASA Specification SP-R-0022A.
3.4.5
Component Materials. Materials for specific components of the connector shall be as
follows:
3.4.5.1
Contacts. Contact material shall be copper-based alloy per QQ-B-613, QQ-B-750, or
QQ-C-530. Mating surfaces shall be gold-plated per MIL-G- 45204, Type 1, Grade C,
Class 1, over a suitable underplate. Silver underplate shall not be used. Solder
termination areas shall be of a quality, which will ensure reliable performance in
conjunction with the appropriate SolderSleeve® termination device.
3.4.5.2
Solder. Solder shall be Sn63, Sn96 or Sb5 per QQ-S-571 and applicable specification
sheet.
3.4.5.3
Connector Shell. Connector shells shall be die-cast aluminum per QQ-A-591. Shell
finish shall be in accordance with 3.4.5.3.1, 3.4.5.3.2 or 3.4.5.3.3.
3.4.5.3.1
Anodic Finish. Anodic (nonconductive) shell finish shall be black, hard and in
accordance with MIL-A-8625, Type II, Class 2.
3.4.5.3.2
Electroless Nickel. Electroless nickel (conductive) shell conductive finish shall be in
accordance with MIL-C-26074 Class 3 or 4, Grade B.
3.4.5.3.3
Cadmium Plating. Cadmium plating (conductive) shell finish shall be olive drab to
yellow and in accordance with QQ-P-416 over a suitable underplate to withstand the
500-hour salt spray test.
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3.4.5.4
Mounting and Mating Hardware. Mounting and mating hardware shall be corrosion
resistant steel per QQ-S-763, ASTM A484 or ASTM A582. Hardware parts for use
with anodic and electroless nickel shell finishes shall be passivated per QQ-P-35.
Hardware parts for use with cadmium plated shells shall be cadmium plated per QQ-P416.
3.4.5.5
Elastomeric Seals. Elastomeric seals shall be resilient dielectric material per the
applicable specification control drawing.
3.4.5.6
Connector Inserts. Connector inserts shall be rigid thermoplastic dielectric material per
the applicable specification control drawing.
3.5
Design and Construction Requirements. Connectors shall be designed and constructed
to withstand handling during installation and maintenance. Complete connectors shall
consist of a rectangular plug or receptacle shell; fixed or removable insert(s) with fixed
pin or socket contacts; mounting/mating hardware and, where appropriate, a cable
clamp.
3.5.1
Shells. Plug and receptacle shells shall meet the following requirements:
3.5.1.1
Shells for EME-Shielded Connectors. Plug shells for EME-shielded connectors shall
have spring fingers which contact the receptacle shell prior to engagement of the
contacts.
3.5.1.2
Shells for Pressure-Maintaining Connectors. Shells for pressure maintaining connectors
shall have mounting flanges and elastorneric gaskets for sealing the flange to a panel.
3.5.1.3
Coupling. Coupling between mating connectors shall be accomplished by means of
two captive jackscrews on the plug shell. Jackscrew threads shall conform to FEDSTD-H28 and shall be self-locking per MIL-F-18240. Jackscrews shall provide
sufficient force to effect a moisture seal between the socket contact insert and the
elastomeric interfacial seal on the pin contact insert. Complete coupling shall occur
when the jackscrews are torqued to 9 lbf-inch (1.0 N-m) as prescribed in Raychem ES
61115 (MTC100) or ES 61257 (MTC50).
3.5.1.4
Polarozation. Shell polarization shall prevent the mating of any plug and receptacle
shells if the connectors are not in the correct mating position. Polarization of shells
shall occur before connector keying.
3.5.1.5
Connector Keying. Insertable keying pins shall provide a minimum of 16 different
keying combinations. Keying shall prevent the mating of any plug and receptacle not
properly keyed. Connector keying shall occur before engagement of contacts or
coupling hardware.
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3.5.1.6
Insert Retention. Shells shall retain removable inserts by mechanical means. Fixed
inserts shall be retained by adhesives.
3.5.1.7
Cable Clamps. Receptacle shells suitable for cable mounting and, all plug shells shall
have provisions for attachment of cable clamps. Cable clamp screws shall have threads
conforming to FED-STD-H28 and shall be self-locking per MIL-F-1 8240.
3.5.1.8
Mounting Hardware. Mounting hardware shall be provided with each receptacle shell.
Mounting hardware screw threads shall conform to FED-STD-H28 and shall be
self-locking per MIL-F-18240. Mounting hardware may also function as coupling
hardware.
3.5.2
Inserts. Connector inserts shall be either fixed in the shell or removable. Inserts shall
contain nonremovable (fixed) contacts. Removable inserts shall have polarizing
keyways to ensure proper orientation within the shell. Pin contact inserts shall have an
elastomeric interfacial seal bonded to the mating face.
3.5.2.1
Contact Arrangement. Fixed inserts shall contain one or two rows of contacts and
removable inserts shall contain a single row of contacts. Contact arrangement shall be
in accordance with the applicable specification control drawing, and is shown in Table
I for reference only.
Table 1. Contact Arrangement
Center-to-Center Contact Spacing
Connector
Series
MTC50
MTC100
Adjacent
Contacts in
Same Row
inch
(mm)
0.05
(1.3)
0.1
(2.5)
Between Rows of
Contacts
inch
(mm)
0.1
0.1
(2.5)
(2.5)
Contacts per Row
Shell
Size
1
Shell
Size
2
Contact Rows
per Connector
20
10
40
20
2
2
3.5.3
Contacts. Contacts shall be designed to withstand termination and repeated mating and
unmating of connectors. Mating surfaces shall be smooth and uniform and shall provide
a wiping action during mating. Contacts shall not be removable from the inserts.
Mating portions of the contacts shall be of blade (pin contact) and tuning fork (socket
contact) design.
3.5.3.1
Contact Termination. Contacts for solder termination shall have solder tab terminals.
The terminals shall be solder coated per 3.4.5.2 and shall be encapsulated with heatshrinkable polymeric material to provide strain relief and sealing. Sealing shall be
achieved with wires and cables specified on the applicable specification control
drawing. Contacts for termination by solderless wrap connections shall have 0.025-inch
(0.64-mm) square wrap post terminals.
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Wire Size Compatibility. Table II shows the wire sizes compatible with each contact
size and the maximum current allowable in any contact when terminated to a particular
wire size.
Table II. Wire Size Compatibility
Connector
Series
Contact Size
MTC50
26
MTC100
22
Maximum
Current,
A
1.5
2.0
2.0
2.0
3.0
5.0
5.0
Round Wire
Size,
AWG
26
24
26
24
22
20
Flat Conductor Dimensions
Size
28
24
22
-
Width
Inch (mm)
0.25 (0.64)
0.065 (1.65)
0.065 (1.65)
-
Thickness
Inch (mm)
0.005 (0.13)
0.005 (0.13)
0.008 (0.20)
-
3.5.4
Interfacial Seal. The elastomeric interfacial seal shall be designed to eliminate leakage
paths between adjacent contacts and between contacts and the shell when the connector
is fully mated. The interfacial seal shall be permanently bonded to the mating face of
the pin insert. Suitable marking shall be provided on the mating face of the interfacial
seal to identify the number "1" contact on each insert.
3.5.5
Interchangeability. All components having the same part number shall be completely
interchangeable with each other in regard to installation and performance.
3.5.6
Intermateability. All plug and receptacle connectors of the same series, type and shell
size and containing the appropriate inserts and keying pin combinations shall mate with
each other.
3.6
Performance Requirements. Connector components and assemblies shall conform to
the requirements specified herein and on the applicable specification control drawings.
Unless otherwise specified, room temperature shall be 25 ± 5°C. Values given as "after
conditioning" values refer to requirements after any of the environmental exposures of
Table XI.
3.6.1
Insulation Resistance. When connector assemblies are tested as specified in 4.5.3, the
insulation resistance at 23°C between a) any pair of adjacent contacts and b) between
any contact and the shell shall be 5000 megohms minimum, unless otherwise specified.
The insulation resistance at the maximum rated temperature shall be 1000 megohms
minimum.
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3.6.2
Dielectric Withstanding Voltage. When connector assemblies are tested as specified in
4.5.4, there shall be no evidence of breakdown or flashover. The real leakage current
shall be 1.0 milliampere maximum.
3.6.3
Contact Resistance.
3.6.3.1
Contact Resistance at Specified Current. When connector assemblies are tested as
specified in 4.5.5.1 or 4.5.5.2, mated contacts shall meet the requirements of Table III.
Table III. Contact Resistance At Rated Current
Contact
Conductor
Test Current
Size
AWG
AMPS
20
22
24
26
24
26
28
5.0
5.0
3.0
2.0
2.0
2.0
1.5
22
26
3.6.3.2
Voltage Drop, max mV
At Room Temp
At Max. Rated Temp.
After
After
Initial
Conditioning
Conditioning
75
90
113
90
105
135
66
78
99
58
70
87
50
59
70
62
74
87
65
77
91
Low Signal Level Contact Resistance. When connector assemblies are tested as
specified in 4.5.5.3, mated contacts shall meet the requirements of Table IV.
Table IV. Low Signal Level Contact Resistance
Contact
Size
Conductor
AWG
22
20
22
24
26
24
26
28
26
3.6.4
Resistance, max, milliohms
After
Initial
Conditioning
15
18
18
21
22
26
29
35
25
30
31
37
43
51
Shell to Shell Conductivity (conductive finish only). When mated connectors are tested
as specified in 4.5.6, the measured voltage drop shall be as shown in Table V.
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Table V. Shell-To-Shell Conductivity
Connector Class
Voltage Drop
Initial
max, mV
After Conditioning
Environment Resistant,
EME-Shielded
1.0
1.5
Other Classes
2.5
5.0
3.6.5
Electrical Engagement. When connector assemblies are tested as specified in 4.5.7, the
electrical engagement shall be as shown in Table VI.
Table VI. Electrical Engagement
Connector
Series
Electrical Engagement, min.
Inch
(mm)
MTC50
MTC100
3.6.6
0.030
0.050
(0.76)
(1.27)
Contact Engagement and Separation Forces. When socket contacts are tested as
specified in 4.5.8, the largest value of the engagement force and the smallest value of
the separation force measured on any contact shall be as shown in Table V11. The
mean value of the engagement forces measured on the individual contacts shall be as
shown in Table VII.
Table VII. Contact Engagement And Separation Forces
Engagement Force, max.
Maximum Average Value
oz-force
(N)
9.0
(2.5)
Separation Force, min.
Maximum Value
oz-force
(N)
12.0
(3.3)
Smallest Value
oz-force
(N)
1.0
(0.28)
3.6.7
Durability. After conditioning as specified in 4.5.9, connector assemblies shall meet
the subsequent performance requirements of Table XI and shall show no evidence of
damage detrimental to performance or handling.
3.6.8
3.6.8.1
Solder Termination Tensile Strength.
Round Wire Terminations. When individual wire terminations are tested at room
temperature and at the maximum rated temperature as specified in 4.5.10.1, the tensile
load required to separate each wire from its terminal shall be in accordance with Table
VIII.
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Table VIII. Round Wire Termination Tensile Strength
Tensile Load, minimum
Wire
Type
Annealed
Copper
High
Strength
Copper
Alloy
3.6.8.2
Wire
Size
AWG
20
22
24
24
26
22
24
24
26
Connector
Series
MTC100
MTC50
MTC100
MTC50
At Room Temp
lbf
(N)
20.0
(89)
12.0
(53)
8.0
(36)
8.0
(36)
5.0
(22)
16.0
(71)
16.0
(71)
10.0
(44)
10.0
(44)
At Max. Rated Temp
lbf
(N)
15.0
(67)
10.0
(44)
6.0
(27)
6.0
(27)
4.0
(18)
12.0
(53)
12.0
(53)
8.0
(36)
8.0
(36)
Flat Conductor Cable Terminations. When terminated inserts are tested at room
temperature and at the maximum rated temperature as specified in 4.5.10.2, the
assembly shall withstand the axial load shown in Table IX without evidence of
mechanical damage to the termination areas.
Table IX Flat Conductor Cable Tensile Strength
Connector
Series
MTC50
MTC100
Axial Load per Unit Cable Width
At Room Temperature
At Max. Rated Temperature
lbf/inch
(kN/m)
lbf/inch
(kN/m)
50
(8.8)
15
(2.6)
50
(8.8)
20
(3.5)
3.6.9
Insert Retention. When connector assemblies are tested as specified in 4.5.11, the
inserts shall not be damaged or dislocated from their fully seated positions. The inserts
shall retain their normal positions in the shell for at least 5 seconds at the specified
load.
3.6.10
Contact Retention. When terminated inserts are tested as specified in 4.5.12, the axial
displacement of contacts shall not exceed 0.012 inch (0.30 mm) while the load is
applied.
3.6.11
Coupling Torque. When terminated connector assemblies are tested as specified in
4.5.13, the connector halves shall become fully mated, shall meet the subsequent
performance requirements of Table XI, and shall show no evidence of damage
detrimental to performance or handling of the connectors.
3.6.12
Coupling Overtorque. When terminated connector assemblies are tested as specified in
4.5.14, there shall be no evidence of mechanical damage to shells or mating hardware.
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3.6.13
Maintenance Aging. After conditioning as specified in 4.5.15, connector assemblies
shall meet the subsequent performance requirements specified in Table XI, and shall
show no evidence of damage detrimental to performance or handling.
3.6.14
Random Vibration. When terminated, mated connector assemblies are tested as
specified in 4.5.16, there shall be no electrical discontinuities and no evidence of
cracks, breaks or loosening of parts.
3.6.15
Mechanical Shock. When terminated, mated connector assemblies are tested as
specified in 4.5.17, there shall be no electrical discontinuities and no evidence of
cracks, breaks, or loosening of parts.
3.6.16
Thermal Shock. When terminated, mated connector assemblies are tested as specified
in 4.5.18, there shall be no evidence of damage detrimental to performance or handling.
3.6.17
Temperature Life. When terminated, mated connector assemblies are tested as
specified in 4.5.19, the insulation resistance at the maximum rated temperature shall be
1000 megohms minimum.
3.6.18
Humidity. When terminated, mated connector assemblies are tested as specified in
4.5.20, the insulation resistance shall be 100 megohms minimum while at high
humidity and shall be 1000 megohms minimum at the final measurement. The
assemblies shall meet the dielectric withstanding voltage requirements of 3.6.2. at both
measurement times.
3.6.19
Altitude Immersion. When terminated, mated connector assemblies are tested as
specified in 4.5.21, the insulation resistance shall be 1000 megohms minimum, and the
mated connectors shall meet the dielectric withstanding voltage requirements of 3.6.2.
3.6.20
Altitude-Low Temperature. When terminated, mated connector assemblies are tested as
specified in 4.5.22, the connectors shall withstand the applied potential at low pressure with no
evidence of dielectric breakdown. Insulation resistance and dielectric withstanding voltage
requirements at ambient conditions shall be as specified in 3.6.1 and 3.6.2.
3.6.21
Salt Spray. When terminated, mated connector assemblies are tested in accordance
with 4.5.23.1 or 4.5.23.2, the specimens shall show no evidence of damage detrimental
to performance or handling.
3.6.22
Ozone Exposure. When terminated, unmated connector assemblies are tested as
specified in 4.5.24, the connectors shall show no evidence of damage detrimental to
performance or handling.
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3.6.23
Fluid Immersion. When terminated connector assemblies are tested as specified in
4.5.25, the connectors shall show no evidence of damage detrimental to performance or
handling. Some softening and / or parting of the cable clamp elastomeric strain relief is
permissible as long as functionality is not impaired.
3.6.24
Magnetic Permeability. When unmated connector assemblies are tested as specified in
4.5.26, the relative permeability shall be 2.0 maximum.
3.6.25
Solderability. (Boxmount connectors with pre-tinned PBC mount tails only). When
unterminated boxmount PCB terminals are tested as specified in 4.5.27, the termination
surfaces of the terminals shall be at least 95 percent covered with a continuous new
solder coating.
3.6.26
Industrial Gas. When terminated, unmated connector assemblies are tested as specified
in 4.5.28, the connectors shall meet the subsequent performance requirements of Table
X1. The contacts shall show no evidence of damage detrimental to the performance or
handling of the connector.
3.6.27
Contact Inductive Load Switching. When terminated, mated connector assemblies are
tested as specified in 4.5.29, they shall meet the room- temperature, after-conditioning,
contact resistance requirements of Table 111.
3.6.28
Overload Current and Circuit Breaker Compatibility. When terminated, mated
connector assemblies are tested as specified in 4.5.30, the connectors shall meet the
room-temperature, after-conditioning, contact resistance requirements of Table III.
3.6.29
Temperature Rise at Rated Current. When mated connector assemblies are tested as
specified in 4.5.31, the temperature rise shall be 100°C maximum.
3.6.30
3.6.30.1
Insert Material Requirements.
Tensile Strength. When tested as specified in 4.5.32.1, the tensile strength shall be
13,000 psi (90 MPa) minimum.
3.6.30.2
Deflection Temperature. When tested as specified in 4.5.32.2, the deflection
temperature shall be 185°C minimum.
3.6.30.3
Water Absorption. When tested as specified in 4.5.32.3, the water absorption shall be
0.5 percent maximum.
3.6.30.4
Flammability. When tested as specified in 4.5.32.4, the insert material shall meet the
requirements for U.L. flammability rating 94 V-O.
3.6.30.5
Smoke Generation. When tested in accordance with 4.5.32.5, the corrected specific
optical density shall be 15 maximum for each specimen tested.
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3.6.31
Insert Impact Resistant. When unterminated pin and socket removable inserts are
tested as specified in 4.5.33, the average uncompensated reversed notch impact strength
for as-molded socket inserts shall be greater than 0.2 ft-lbf (0.27 J), and greater than
0.15 ft-lbf (0.20 J) for as molded pin inserts.
3.6.32
Insert Impact Chip Resistance. When unterminated pin and socket removable inserts
are tested as specified in 4.5.34, there shall be no evidence of chipping or fracture.
3.6.33
Insert Flexure. When unterminated pin and socket removable inserts are tested as
specified in 4.5.35, there shall be no cracking, breaking, or other mechanical
deterioration. Each insert shall then be capable of being placed in a housing, together
with a companion insert when required, and mated with the appropriate mating
connector assembly.
3.6.34
Removable Insert Abuse. After conditioning as specified in 4.5.36, unmated
connectors shall meet the insert retention requirements of 3.6.9, and they shall show no
evidence of damage detrimental to performance or handling.
3.6.35
Retention System Fluid Resistance. When unmated connectors are tested as specified
in 4.5.37, they shall meet the insert retention requirements of 3.6.9.
3.6.36
EME Shielding (EME-Shielded Class Only). When mated connector assemblies
terminated to suitable shielded cable are tested in accordance with 4.5.38, the
maximum surface transfer impedance (Zt in milliohms per meter) shall be level 5 as
shown in Figure 1.
3.6.37
Air Leakage (Pressure Maintaining Class Qnly). When tested in accordance with
4.5.39, connectors shall have a leakage rate of 0.5 atm cm3/s maximum.
3.6.38
Gas Tightness. When terminals with solderless wrap connections are tested in
accordance with 4.5.40, the connections shall meet the gas tightness requirements of
MIL-STD-1130.
3.6.39
Strip Force. When terminals with solderless wrap connections are tested in accordance
with 4.5.41, the connections shall meet the strip force requirements of MIL-STD-1130.
3.6.40
Wrapper Resistance. When terminals with solderless wrap connections are tested in
accordance with 4.5.42, the connections shall meet the wrapper resistance requirements
of MIL-STD-1130.
3.6.41
Cold Handling. When connectors are tested as specified in 4.5.43 there shall be no
visible material deterioration. Connectors shall be able to be mated and demated
normally and removable inserts shall be able to be removed and installed normally.
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Figure 1. Surface Transfer Impedance
3.6.42
Post Test Examination. Connector assemblies shall be inspected as specified in 4.5.44.
Any evidence of the effects described in 4.5.44 shall constitute failure.
3.7
Product Identification. All marking shall be in accordance with the applicable
specification control drawing. The marking shall remain legible after completion of the
test sequences in Groups 1, 2, 3, and 4 of Table XI.
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3.7.1
Shell Identification. Connector shells shall be marked on an external surface with the
shell part number, date code, and the name "Raychem." The top and bottom surfaces of
every shall designed for removable inserts shall be permanently marked at the wire
termination end to identify proper insert orientation.
3.7.2
Removable Insert Identification. Removable inserts shall be marked with the part
number, date code, the name "Raychem," and an orientation indicator as specified in
the applicable specification sheet.
3.7.2.1
Contact Identification. The number "1" contact shall be marked on the engaging face
of each insert. The first and last contact positions shall be permanently identified on the
keyed surface of each removable insert.
3.8
Workmanship. Connectors and accessories shall be processed in such a manner as to
be uniform in quality; they shall be free from burrs, cracks, voids, chips, blisters, sharp
cutting edges, and other defects that would adversely affect life or serviceability.
4.0
Quality Assurance Provisions
4.1
Responsibility for Inspection. The supplier is responsible for the performance of all
inspection tests specified herein. The supplier may utilize his own or any other suitable
testing facility. Inspection records of the tests shall be kept complete and available to
the buyer as specified in the contract or order.
4.1.1
Test Equipment and Inspection Facilities. Test and measuring equipment and
inspection facilities of sufficient accuracy, quality, and quantity to permit performance
of the required inspection shall be established and maintained by the supplier. A
calibration system to control the accuracy of the measuring and test equipment shall be
maintained in accordance with MIL-STD-45662.
4.2
Classification of Inspections. The examination and testing of connectors covered by
this specification shall be classified as follows:
a. Qualification inspection
b. Acceptance inspection
4.3
(See para. 4.3)
(See para. 4.4)
Qualification Inspection. Qualification inspection shall consist of the tests in Table XI.
Qualification shall be granted upon successful completion of the inspections and tests
of Table XI, conducted upon the samples of Table X, in accordance with Specification
C-6100. In Table XI test groups where the tests are not sequential, separate samples
shall be used for each test.
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Test Samples for Qualification Inspection. Test samples, submitted for qualification
inspection, shall be produced using equipment and procedures normally used in
production. Test samples shall be of the types listed in Table X. Individual test samples
shall be selected in compliance with the qualification requirements of Specification C6100.
Table X. Qualification Test Samples
Test
Group
Type of Test Sample
1
Terminated mated connectors
2
Terminated mated connectors
3
Terminated mated connectors
4
Terminated mated connectors
5
Terminated mated connectors
6
Terminated mated connectors (EME-shielded class only)
7
Terminated mated connectors (Cadmium shell plating only)
8
Inserts or Boxmounts w/ PCB mount tails (Solderability)
9
Insert Material Specimans
10
Removable Inserts
11
Terminated mated connectors
12
Terminated mated connectors
S-1
Terminated mated connectors (Non-Standard Configurations)
4.3.2
Failures. One or more failures of the tests listed in Table XI shall be cause for failure
of qualification of the parts under test. An exception to this is visual examination,
where occurrence of one major defect or two minor defects shall be cause for failure of
qualification. Major and minor defects shall be as defined in MIL-STD-105. In the
event of failure, procedures outlined in Raychem Specification C-6100 shall be
followed.
4.3.3
Qualification Report. Qualification shall be documented in a report which shall be
available to the buyer.
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Table XI. Qualification Inspection
Test Group 1
Test Sequence
Visual Examination
Maintenance aging
Contact engagement and separation forces
Thermal shock
Air leakage*
Coupling torque
Durability
Altitude immersion
Insulation resistance measurement
Dielectric withstanding voltage test
Insert retention
Salt spray (corrosion)
Coupling torque
Low signal level contact resistance
Contact resistance at specified current
Electrical engagement
Contact engagement and separation forces
Coupling over torque
Post test examination
* Pressure-maintaining connectors only
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Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6-13
3.6.6
3.6.16
3.6.37
3.6.11
3.6.7
3.6.19
Procedure
Paragraph
4.5.2
3.6.9
3.6.21
3.6.11
3.6.3.2
3.6.3.1
3.6.5
3.6.6
3.6.12
3.6.42
4.5.11
4.5.23.1
4.5.13
4.5.5.3
4.5.5.1
4.5.7
4.5.8
4.5.14
4.5.44
4.5.15
4.5.8
4.5.18
4.5.39
4.5.13
4.5.9
4.5.21
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Test Group 2
Test Sequence
Visual examination
Shell-to-shell conductivity
Maintenance aging
Contact engagement and separation forces
Contact retention
Altitude -Low Temperature
Insulation resistance at room temperature
Dielectric withstanding voltage at sea level
Thermal shock
Air leakage*
Coupling torque
Insulation resistance at max. rated temperature
Dielectric withstanding voltage at sea level
Dielectric withstanding voltage at altitude
Durability
Random vibration
Mechanical shock
Shell-to-shell conductivity
Humidity
Insulation resistance in high humidity
Dielectric withstanding voltage in high humidity
Insulation resistance after 24 hours
Dielectric withstanding voltage after 24 hours
Low signal level contact resistance
Contact resistance at specified current
Contact engagement and separation forces
Contact retention
Coupling over torque
Post test examination
* Pressure-maintaining connectors only.
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Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.4
3.6.13
3.6.6
3.6.10
3.6.20
3.6.1
3.6.2
3.6.16
3.6.37
3.6.11
3.6.1
3.6.2
3.6.2
3.6.7
3.6.14
3.6.15
3.6.4
3.6.18
Procedure
Paragraph
4.5.2
3.6.3.2
3.6.3.1
3.6.6
3.6.10
3.6.12
3.6.42
4.5.5.3
4.5.5.1
4.5.8
4.5.12
4.5.14
4.5.44
4.5.6
4.5.15
4.5.8
4.5.12
4.5.22
4.5.3
4.5.4.1
4.5.18
4.5.39
4.5.13
4.5.3
4.5.4.1
4.5.4.2
4.5.9
4.5.16
4.5.17
4.5.6
4.5.20
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Test Group 3
Test Sequence
Visual examination
Magnetic permeability
Ozone exposure
Insulation resistance at room temperature
Dielectric withstanding voltage at sea level
Fluid immersion
Dielectric withstanding voltage at sea level
Coupling torque
Insert retention
Post test examination
Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.24
3.6.22
3.6.1
3.6.2
3.6.23
3.6.2
3.6.11
3.6.9
3.6.42
Procedure
Paragraph
4.5.2
Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.6
3.6.17
Procedure
paragraph
4.5.2
3.6.18
4.5.20
3.6.3.2
3.6.3.1
3.6.3.1
4.5.5.3
4.5.5.1
4.5.5.2
3.6.41
3.6.9
3.6.6
3.6.10
3.6.42
3.6.8
4.5.43
4.5.11
4.5.8
4.5.12
4.5.44
4.5.10
4.5.26
4.5.24
4.5.3
4.5.4.1
4.5.25
4.5.4.1
4.5.13
4.5.11
4.5.44
Test Group 4
Test Sequence
Visual examination
Contact engagement and separation forces
Temperature life
Insulation resistance at maximum rated temp.
Humidity
Insulation resistance in high humidity
Dielectric withstanding voltage in high humidity
Insulation resistance after 24 hours
Dielectric withstanding voltage after 24 hours
Low signal level contact resistance
Contact resistance at specified current
Contact resistance at specified current and
maximum rated temperature
Cold handling
Insert retention
Contact engagement and separation forces
Contact retention
Post test examination
Solder termination tensile strength
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4.5.8
4.5.19
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Test Group 5
Test Sequence
Visual examination
Low signal level contact resistance
Contact resistance at specified current
Industrial gas exposure
Low signal level contact resistance
Contact resistance at specified current
Post test examination
Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.3.2
3.6.3.1
3.6.26
3.6.3.2
3.6.3.1
3.6.42
Procedure
Paragraph
4.5.2
4.5.5.3
4.5.5.1
4.5.28
4.5.5.3
4.5.5.1
4.5.44
Test Group 6 (EME shielded class only)
Test Sequence
Visual examination
Shell-to-shell conductivity
Durability
Shell-to-shell conductivity
EME shielding
Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.4
3.6.7
3.6.4
3.6.36
Procedure
Paragraph
4.5.2
Requirement
Paragraph
3.6.21
Procedure
Paragraph
4.5.23.2
Requirement
Paragraph
3.6.25
3.6.38
3.6.39
3.6.40
Procedure
Paraqraph
4.5.27
4.5.40
4.5.41
4.5.42
4.5.6
4.5.9
4.5.6
4.5.38
Test Group 7
Test Sequence
Salt spray (dynamic test)
Test Group 8
Test Sequence
Solderability (PCB mount tails only)
Gas tightness (wrap-post terminals only)
Strip force (wrap-post terminals only)
Wrapper resistance (wrap-post terminals only)
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Test Group 9
Insert Materials Tests:
Tensile strength
Deflection temperature
Water absorption
Flammability
Smoke generation
Requirement
Paragraph
3.6.30.1
3.6.30.2
3.6.30.3
3.6.30.4
3.6.30.5
Procedure
Paragraph
4.5.32.1
4.5.32.2
4.5.32.3
4.5.32.4
4.5-32.5
Requirement
Paragraph
3.6.31
3.6.32
3.6.33
Procedure
Paragraph
4.5.33
4.5.34
4.5.35
Requirement
Paragraph
3.6.27
3.6.28
3.6.29
Procedure
Paragraph
4.5.29
4.5.30
4.5.31
Requirement
Paragraph
3.6.34
3.6.35
Procedure
Paragraph
4.5.36
4.5.37
Test Group 10 (Removable Inserts Only)
Insert impact resistance
Insert impact chip resistance
Insert flexure
Test Group 11
Contact inductive load switching
Overload current and circuit breaker compatibilit
Temperature rise at rated current
Test Group 12
Removable insert abuse
Retention system fluid resistance
Test Group S-1 (Special, Non-Standard Configurations)
Visual examination
Coupling over torque
Thermal shock
Altitude immersion
Insulation resistance measurement
Dielectric withstanding voltage test
Solder termination tensile strength
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Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.12
3.6.16
3.6.19
Procedure
Paragraph
4.5.2
3.6.8
4.5.10
4.5.14
4.5.18
4.5.21
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Acceptance Inspection. Lot acceptance inspection shall consist of the tests listed in
Table XII. Acceptance inspection shall be performed on every lot of connectors
manufactured under this specification. The sample units shall be tested unterminated
and shipped against orders. Inprocess examination may be used for acceptance
inspection. Statistical process control (SPC) may be substituted for lot acceptance
inspection per Raychem Standard Operating Procedure 0001.
Table XII. Acceptance Inspection
Test
Visual examination
Requirement
Paragraph
3.1, 3.4, 3.5,
3.7, 3.8
3.6.1
Procedure
Paragraph
4.5.2
Inspection Level
AQL*
I
4.0
Insulation resistance at room
4.5.3
S-3
temperature (inserts only)
Dielectric withstanding voltage
3.6.2
4.5.4.1
S-3
(inserts only)
Contact engagement and
3.6.6
4.5.8
S-3
separation forces (min and max
only)
*AQL shall apply to individual defects in accordance with MIL-STD-105, Section 4.5
1.0
1.0
1.0
4.4.1
Sampling for Acceptance Inspection. MIL-STD-105 shall apply for definitions of
inspection terms used herein. For purposes of this specification, the following shall
apply:
4.4.1.1
Inspection Lot. The inspection lot shall consist of all connectors or components of one
part number, manufactured under essentially the same conditions, and offered for
inspection at one time.
4.4.1.2
Inspection Level and Acceptable Quality Levels (AQL). The inspection levels and
acceptable quality levels shall be in accordance with MIL-STD-105 and shall be as
specified in Table XII.
4.4.2
Rejected Lots. If an inspection lot is rejected, the lot shall be replaced, or the defective
units shall be reworked to correct the defect or screened out. If the lot is reworked or
the defective units are screened out, the lot shall be resubmitted for inspection.
Resubmitted lots shall be inspected using tightened inspection in accordance with MILSTD-105.
4.4.3
Examination of Preparation for Delivery. Preparation for delivery of material ready for
shipment shall be examined to determine compliance with the requirements of Section
5.
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4.5
4.5.1
Test Procedures.
Test Conditions. Unless otherwise specified, all tests shall be performed at ambient
pressure, and relative humidity as specified in the general requirements of MIL-STD1344 with an ambient temperature of 25 ± 5°C. Where conditioning at the maximum
rated temperature is specified, the temperature tolerances shall be minus 0°C and plus
5°C.
4.5.1.1
Connector Assembly Preparation. When terminated connectors are specified for
testing, the contacts shall be terminated in accordance with the applicable specification
control drawing. Wire or cable lengths shall be approximately 3 feet (1 meter).
Connectors shall be assembled in accordance with the applicable Raychem engineering
standard (ES). Cable clamps shall be installed, if provided for.
4.5.2
Visual Examination (see 3.1, 3.4, 3.5, 3.7.3.8). Connector components and assemblies
shall be visually examined at 4X magnification.
4.5.3
Insulation Resistance (see 3.6.1). Connector assemblies shall be tested in accordance
with MIL-STD-1344, Method 3003. All contacts shall be tested. Insulation resistance
shall be measured a) between adjacent contacts in the insert and b) between contacts
and the shell (ground). Alternate contacts may be bussed together to facilitate testing,
and passing values obtained in this manner may be used to indicate compliance on a
pin-to-pin basis. When insulation resistance at maximum rated temperature is specified,
the connector assemblies shall be conditioned in an oven at the maximum rated
temperature for 30 minutes, and the measurements shall be made while the connector
assemblies are at the maximum rated temperature.
4.5.4
Dielectric Withstanding Voltage.
4.5.4.1
Dielectric Withstanding Voltage at Sea Level (see 3.6.2). Connector assemblies shall
be tested in accordance with MIL-STD-1344, Method 3001. All contacts shall be
tested. Test voltage shall be 60 Hz ac applied a) between adjacent contacts in the same
insert and b) between contacts and the shell (ground). Alternate contacts may be bussed
together to facilitate testing, and passing values obtained in this manner may be used to
indicate compliance on a pin-to-pin basis. The shell and all contacts not connected to
the test voltage shall be grounded. The magnitude of the test voltage shall be as
specified in Table XIII.
Table XIII. Test Voltages
Connector Series
Terminated Wire Type
MTC50
All types
MTC100
Round wires
1500
Flat conductor cable
1000
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Test Voltage
V rms
750
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Dielectric Withstanding Voltage at Altitude (see 3.6.2). Mated and unmated connector
assemblies shall be tested as specified in 4.5.4.1, except that the test voltages and
altitude pressure equivalents shall be as specified in Table XIV.
Table XIV. Test Voltages And Altitudes
Altitude Pressure
Equivalent
MTC100 Series
Unmated
Mated
Test Voltage V ms
MTC50 Series
Unmated
Mated
50,000 ft – 87.5 torr
(15.2 km – 11.7 kPA)
550
1000
350
700
70,000 ft – 33.5 torr
(21.3 km – 4.47 kPa)
375
700
250
500
110,000 ft – 5.74 torr
(33.5 km – 0.765 kPa)
200
400
200
400
4.5.5
4.5.5.1
Contact Resistance (see 3.6.3).
Contact Resistance at Specified Current (Room Temperature). Mated connector
assemblies shall be tested in accordance with MIL-STD-1344, Method 3004. At least
20 percent of the contacts in each connector assembly shall be tested.
4.5.5.2
Contact Resistance at Specified Current (Maxamum Rated Temperature). Mated
connector assemblies shall be conditioned in an oven at the maximum rated
temperature for 30 minutes. Measurements shall be made as detailed in 4.5.5.1, while
the connector assemblies are at the maximum rated temperature.
4.5.5.3
Low Signal Level Contact Resistance. Mated connector assemblies shall be tested in
accordance with MIL-STD-1344, Method 3002. At least 20 percent of the contacts in
each connector assembly shall be tested.
4.5.6
Shell to Shell Conductivity (see 3.6.4). Mated connector assemblies with conductive
shell finish shall be tested by applying a direct current of 1 ± 0.1 ampere from the rear
corner of one shell to the opposite rear corner of the other shell. Measure the voltage
drop between the mated surfaces of the shells by applying the voltmeter probes on the
flat surfaces at the middle of the rear edge of the shells. Probes used to make voltage
measurements shall have spherical ends with 0.050 inch (1.3 mm) minimum radius and
shall not puncture or damage the shell finish.
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4.5.7
Electrical Engagement (see 3.6.5). Mated connector assemblies shall be wired to
provide a series circuit through all contacts of the mated connector. A suitable power
source and indicator shall be provided such that the point at which the series circuit is
completed, during normal connector mating, can be established. Connector halves shall
be held flat against a smooth, flat surface and mated by alternately turning each
jackscrew one half turn. The mating operation shall be stopped at the first indication of
a completed circuit, and the plug-to-receptacle shell spacing shall be measured along
the centerline of the connectors. The mating operation shall then be continued until the
connector halves are completely mated at a jackscrew torque of 9 lbf-inch (1.0 N-m),
and the shell spacing shall again be measured. Electrical engagement shall be the
difference between the two measurements.
4.5.8
Contact Engagement and Separation Forces (see 3.6.6). Contacts shall be tested in
accordance with MIL-STD-1344, Method 2014, Procedure 1. Test blades shall be as
shown in Figure 2. Contacts shall be conditioned by inserting and withdrawing the
maximum-thickness test blade. For qualification inspection, at least 20 percent of the
contacts in each connector assembly shall be tested.
4.5.9
Durability (see 3.6.7). Terminated connector assemblies shall be mated and unmated
500 times at a rate not to exceed 300 cycles per hour and in a manner simulating actual
service. The test may be performed by hand or by mechanical means. For the MTC50
series it is permissable to shake or blow particulate debris from the threads or interface
surfaces at intervals of not less than 50 cycles. If necessary, a soft bristle brush
moistened with isopropyl alcohol may likewise be used at similar intervals.
4.5.10
Solder Termination Tensile Strength (see 3.6.8). Tensile strength testing shall be
performed at room temperature and at the maximum rated temperature.
4.5.10.1
Round Wire Termination Tensile Strength (see 3.6.8.1). Terminated inserts shall be
placed in a tensile testing device and sufficient force applied to individual wires to
separate the wires from the terminals or break the wires. Wires shall be gripped 3.0 ±
0.5 inches (76 ± 13 mm) from the termination area. The speed of head travel of the
tensile tester shall be 1.0 ± 0.25 inch (25 ± 6 mm) per minute. Conductor breakage
outside the soldered termination at less than the tensile loads shown in Table VIII shall
not constitute failure. At least 20 percent of the wire terminations of each insert shall be
tested.
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Test Blade
Type
Dimension A,
inch (mm)
Maximum Thickness
Minimum Thickness
Notes:
1.
2.
3.
4.
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Dimension B, inch (mm)
Size 26
Contacts
0.028 ± 0.001
Size 22
Contacts
0.050 ± .001
(0.533 + 0.000)
(-0.005)
(0.71 ± 0.03)
(1.27 ± 0.03)
0.0190 + 0.0002
-0.0000
0.028 ± 0.001
0.50 ± .001
(0.483 + 0.005)
(-0.000)
(0.71 ± 0.03)
(1.27 ± 0.03)
0.0210 +0.0000
-0.0002
Material: Hardened Tool Steel.
Hardness: Rockwelll “C” 50-55.
Surface Finish: 6 to 10 microinch (0.15 to 0.25 µm) on working surfaces
Dimensions: inch (mm)
Figure 2. Test Blades for Contact Engagement and Separation Forces.
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4.5.10.2
Flat Conductor Cable Termination Tensile Strength (see 3.6.8.2). Terminated inserts
shall be placed in a tensile testing device, and an axial load as specified in Table IX
shall be applied for 10 seconds uniformly across the width of the cable. Cable shall be
gripped 3.0 ± 0.5 inch (76 ± 13 mm) from the termination area. The speed of head
travel of the tensile tester shall be 1.0 ± 0.25 inch (25 ± 6 mm) per minute.
4.5.11
Insert Retention (see 3.6.9). Terminated connector assemblies shall be tested in
accordance with MIL-STD-1344, Method 2010, except that the load shall be applied
only against the insert mating surface. The load shall be 200 psi (1.4 MPa), applied
evenly over the entire mating surface. If a tensile tester is used to apply the load, the
speed of head travel shall be 0.02 inch (0.5 mm) per minute.
4.5.12
Contact Retention (see 3.6.10). Terminated inserts shall be tested in accordance with
MIL-STD-1344, Method 2007. Axial load shall be 10 lbf (44 N) for size 22 contacts
and 5 lbf (22 N) for size 26 contacts, applied to mating ends of contacts.
4.5.13
Coupling Torque (see 3.6.11). Terminated plug and receptacle assemblies shall be
mated by alternately turning jackscrews; one-half turn at each side of the connector to a
torque of 9 lbf inch (1.0 N-m). The mated assembly shall then be visually inspected.
4.5.14
Coupling Overtorque (see 3.6.12). Terminated connector assemblies shall be mated to
a torque of 9 lbf-inch (1.0 N-m). The jack-screws shall then be torqued to 15 lbf-inch
(1.7 N-m), and the shells and mating hardware visually examined.
4.5.15
Maintenance Aging (see 3.6,13). Terminated connector assemblies shall be fully mated
and unmated three times. Using the tool specified in the applicable specification sheet,
removable inserts shall then be removed from the shells and installed in the shells ten
times. Connector assemblies shall then be fully mated and unmated three additional
times.
4.5.16
Random Vibration (see 3.6.14). Terminated, mated connector assemblies shall be
tested in accordance with MIL-STD-1344, Method 2005, Test Condition V1, Letter J.
Connectors shall be panel mounted by normal means, with at least 8 inches (200 mm)
of wire unsupported behind each connector. Specimens shall be subjected to vibration
for 8 hours in each major axis for a total of 24 hours. The discontinuity detector shall
be capable of detecting discontinuities of 100 nanoseconds and greater.
4.5.17
Mechanical Shock (see 3.6,15). Terminated, mated connectors shall be tested in
accordance with MIL-STD-1344, Method 2004, Test Condition D. The connectors
shall be panel mounted by normal means, with at least 8 inches (200 mm) of wire
unsupported behind each connector. The discontinuity detector shall be capable of
detecting discontinuities of 100 nanoseconds and greater.
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4.5.18
Thermal Shock (see 3.6.15). Mated connector assemblies shall be tested in accordance
with MIL-STD-202, Method 107, Test Condition F, except that the high temperature
extreme shall be the maximum rated temperature.
4.5.19
Temperature Life (see 3.6.17). Terminated, mated connector assemblies shall be tested
in accordance with MIL-STD-1344, Method 1005, for 1000 hours at the maximum
rated temperature, using an air-circulating oven. Contacts shall not be wired in series or
connected to an electrical load. Leads shall be brought out through a suitable port so
that electrical measurements can be taken. After 1000 hours and while connectors are
still at the maximum rated temperature and mated, the insulation resistance shall be
measured in accordance with 4.5.3.
4.5.20
Humidity (see 3.6.18). Terminated, mated connector assemblies shall be tested in
accordance with MIL-STD-1344, Method 1002, Type 11. Polarization voltage is not
required. At least 3 hours after the start of step 7 during the final cycle, and while the
connectors are still subjected to high humidity, insulation resistance shall be measured
in accordance with 4.5.3 and dielectric withstanding voltage shall be tested in
accordance with 4.5.4.1. Final measurements after high humidity shall be performed
after the mated connectors have remained outside the chamber in ambient conditions
for 24 hours.
4.5.21
Altitude Immersion (see 3.6,19). Terminated, mated connectors shall be tested in
accordance with Method 1004 of MIL-STD-1344.
4.5.22
Altitude--Low Temperature (see 3.6.20). Terminated, mated connector assemblies
shall be tested in accordance with MIL-STD-1344, Method 1011. While at low
pressure, MTC50 series connector assemblies shall be tested at 375 Vrms, and MTC1
00 series connector assemblies shall be tested at 625 Vrms. After stabilizing at ambient
conditions, the insulation resistance measurement shall be made in accordance with
4.5.3, with the connectors mated, and the dielectric withstanding voltage test shall be
performed as specified in 4.5.4.1, with the connectors mated.
4.5.23
Salt Spray (see 3.6.21).
4.5.23.1
Salt Spray (Corrosion). Terminated unmated connector assemblies shall be tested in
accordance with MIL-STD-1344, Method 1001, Test Condition B. Suitable measures
shall be taken to preclude migration of condensation along the conductors.
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Salt Spray (Dynamec Tast). Terminated plugs and receptacles shall be mated and
unmated 50 cycles at a rate not to exceed 300 cycles per hour. The plug and receptacle
shall be completely separated during the demate portion of the cycle. The connectors
shall then be mated and exposed to salt fog for 452 hours in accordance with MILSTD-1344, Method 1001. The connectors shall then be unmated and exposed to the salt
fog for 48 hours. Suitable measures shall be taken to preclude migration of
condensation along the conductors. Following the salt fog exposure, 450 mate and
unmate cycles shall be performed.
4.5.24
Ozone Exposure (see 3.6.22). Terminated, unmated connector assemblies shall be tested
in accordance with MIL-STD-1344, Method 1007.
4.5.25
Fluid Immersion (see 3.6.23). Terminated connector assemblies shall be tested in
accordance with MIL-STD-1344, Method 1016, except that measurement of initial
mating and unmating forces is not required. The following exceptions and additional
fluids shall be incorporated into the procedure:
a.
One sample shall be tested in hydraulic fluid per MIL-H-83282, using the same
procedure as for MIL-H-5606 hydraulic fluid.
b.
One sample shall be tested in MIL-T-5624, Grade JP-4, using the same procedure
as for MIL-T-5624, Grade JP-5.
c.
Conditioning in coolant-dielectric fluid (Coolanol) shall be at the maximum rated
temperature.
d.
One sample shall be tested in mineral-based lubricating oil per MIL-L-6082,
using the same procedure as for MIL-L-7808 lubricating oil.
e.
Samples shall be tested in each of the following fluids, using the same procedure
as for MIL-H-5606 hydraulic fluid, except that the connectors shall be immersed
mated: Monsanto Skydrol 500 B-4, Monsanto Skydrol LD4, Chevron Hyjet IV
f.
One sample shall be tested in uncracked, unleaded gasoline ("white gas"), using
the same procedure as for MIL-G-3056 gasoline.
4.5.26
Magnetic Permeability (see 3.6.24). Terminated, unmated connector assemblies shall
be tested in accordance with MIL-STD-1344, Method 3006.
4.5.27
Solderability (see 3.6.25). Terminals shall be tested in accordance with MIL-STD-202,
Method 208.
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4.5.28
Industrial Gas (see 3.6.26). Terminated, unmated connector assemblies shall be placed
on a noncorrosive rack in a closed plastic or glass chamber with a maximum volume of
2 cubic feet (56 cubic decimeters) containing a 10- percent solution of sulfurated potash
NF in distilled water. Samples shall not be immersed in the solution but shall be
exposed to the sulfide vapor for a minimum of 100 hours.
4.5.29
Contact Inductive Load Switching (3.6.27). Each of five contacts shall be demated ten
times while supplying current to an inductive load. The circuit parameters shall be 5.0
amperes for size 22 contacts, 2.0 amperes for size 26 contacts, 115 volts, 400 Hz and
0.70 ± 0.05 lagging power factor.
4.5.30
Overload Current and Circuit Breaker Compatibility (see 3.6,28). Contacts in a mated
connector assembly shall be subjected to overload currents and times specified in Table
XV. The rated current shall be the maximum current as specified in Table 11. Each
overload condition shall be tested five times using a different contact each time.
Table XV. Overload Conditions
Time
(Seconds)
Overload Current
(% of Rated Current)
0.35
1.0
300.0
2000
1000
200
4.5.31
Temperature Rise at Rated Current (see 3.6,29). Contacts shall be terminated to round
wires: size 26 contacts to 26 AWG wire, size 22 contacts to 22 AWG wire. Except for
two wires for connection to the current source, the wires shall extend 2 inches (50 mm)
beyond the ends of the terminals, and all the contacts shall be series wired. The
connectors shall be assembled with a thermocouple positioned against the interfacial
seal at the midpoint of the insert. The connector assembly shall be suspended on edge
in still air, at least 12 inches (30 cm) from the nearest surface, using twine or cord. The
ambient temperature shall be maintained within ± 1° during the test. The initial
temperature at the thermocouple shall be recorded, and then a direct current of 2.0
amperes for size 26 contacts or 5.0 amperes for size 22 contacts shall be applied to the
series wired connector contacts. The final temperature at the thermocouple shall be
recorded after steady-state conditions are reached.
4.5.32
Insert Materials.
4.5.32.1
Tensile Strength (see 3.6.30.1). Tensile strength shall be determined according to
ASTM D 638 on Type IV molded tensile bars, utilizing a crosshead speed of 2.0 inches
(50 mm) per minute.
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4.5.32.2
Deflection Temperature (see 3.6.30.2). The deflection temperature at 66 psi (455 kPa)
maximum fiber stress shall be determined in accordance with ASTM D 648. Specimen
width shall be 0.125 inch (3 mm). (The required load is 0.34 lbf or 1.54 N.)
4.5.32.3
Water Absorption (3.6.30.3). Water absorption shall be measured in accordance with
ASTM D 570 using 2.0 x 0.5 x 0.125 inch (51 x 13 x 3 mm) molded specimens. The
test specimens shall be preconditioned for 24 hours at 100°C before immersion.
Immersion time shall be 24 hours.
4.5.32.4
Flammability (see 3.6.3). Flammability shall be tested in accordance with UL 94V
(para. 3.6.3.15) using 5.0 x 0.5 x 0.125 inch (127 x 13 x 3 mm) molded specimens.
4.5.32.5
Smoke Generation (see 3.6.30.5). Smoke generation shall be determined in accordance
with ASTM F 814. Specimens shall be 3.0 x 3.0 x 0.125 inch (76 x 76 x 3 mm) molded
wafer material. Three specimens shall be tested under flaming exposure and three under
nonflaming exposure.
4.5.33
Insert Impact Resistance (see 3.6.31). The impact resistance of unterminated, as
molded pin and socket removable inserts shall be determined in accordance with
ASTM D 256, Method E. The insert shall be unnotched and shall be inserted into the
vise with the smooth side of the insert toward the fixed vise jaw. A groove shall be
made in the metal support to accommodate the insert keyway. The 2.0 ft.lb. hammer
shall strike the insert not less than 0.05 inch (1.0 mm) from the upper edge of the insert,
and at least 0.65 inch (16.5 mm) from the vise jaws.
4.5.34
Insert Impact Chip Resistance (see 3.6.32). Unterminated pin and socket removable
inserts shall be tested in accordance with ASTM D 256, Method E, using 0.5 ft-lbf (0.7
J) energy level. The insert shall be unnotched. It shall be supported over its full height
and width by a 0.25inch (6-mm) thick steel plate with a groove for the insert keyway
and shall be inserted into the vise with the smooth side of the insert supported by the
metal plate. The impacting tool shall be spheroid in shape, with a radius of 0.50 inch
(12.7 mm), and shall strike the insert 0.25 inch (6 mm) from the end of the insert and
centered between the two edges. After impact, the insert shall be examined with the
unaided eye for evidence of chipping or other fracture.
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4.5.35
Insert Flexure (see 3.6.33). Unterminated pin and socket removable inserts shall be
tested in accordance with ASTM D 790, Method 1, Procedure A. The radius of the nose
shall be 0.125 inch (3 mm), and a groove shall be machined in the nose to
accommodate the keyway on the insert. The radius of the supports shall be 0.125 inch
(3 mm), and the span between the supports shall be 1.5 inch (38 mm) for 2-inch inserts
and 0.75 inch (19 mm) for 1-inch inserts. The force shall be applied to the keying side
of the insert at the rate specified for the nominal specimen depth, until a strain of 5
percent is attained for MTC100 inserts, or 2.5 percent for MTC50 inserts. After
deflection, the insert shall be examined under 10X magnification for evidence of
cracking or breaking.
4.5.36
Removable Insert Abuse (see 3.6.34). Connectors with removable inserts shall be
subjected to the tests listed below. A different specimen shall be used for each test.
Should a removal tool become damaged during testing, it shall be replaced. Failure of a
tool shall not constitute a test failure.
4.5.36.1
Removal Tool Rotation. Inserts of each polarization and contact type shall be tested.
Inserts shall be removed while torque is applied to the removal tool. The insert shall
then be reinserted. These steps shall be repeated ten times on each insert.
4.5.36.2
Removal Tool Thrust. Inserts of each polarization and contact type shall be tested. The
applicable insert removal tool shall be inserted as if to remove the insert, and an axial
load of 10 lbf (44 N) shall be applied to the tool. The tool shall then be removed along
with the insert.
4.5.37
Retention System Fluid Resistance (see 3.6.35). Unmated connectors shall be
immersed for 20 hours at room temperature in the fluids specified below, using a
different connector for each fluid. Connectors shall be removed from fluids and
allowed to drain for 4 hours. Insert retention shall then be tested as specified in 4.5.11.
Test fluids:
a.
Monsanto low density aviation hydraulic test fluid.
b.
MIL-H-5606 hydraulic fluid.
c.
MIL-L-23699 lubricating oil.
d.
Methyl ethyl ketone per TT-M-261.
e.
Alkaline detergent, pH 10.0 to 0.5.
f.
Aviation turbine fuel, type Jet A.
g.
MIL-T-5624 fuel, type JP-4.
h.
One part by volume of isopropyl alcohol per TT-1-735, Grade A or B, mixed
with three parts mineral spirits per TT-T-291, Grade 1 or P-D-680, Type 2.
i.
Anti-icing fluid, composition by weight: 66.0% ethylene glycol per MIL-E9500, Grade A; 22.0% propylene glycol per MIL-P-83800, industrial grade;
10.0% water; 0.90% dibasic potassium phosphate; 0.65% sodium di-(2ethylhexyl) sulfosuccinate (100% active); 0.45% benzotriazole.
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4.5.38
EME Shielding (see 36.36). EME-shielded connectors shall be terminated to suitable
shielded cable, and the surface transfer impedance (Zt) of the test specimen shall be
measured in accordance with MIL-C-85485.
4.5.39
Air Leakage (see 3.6.37). Terminated, pressure maintaining connector assemblies shall
be tested in accordance with the environmental seal test method of MIL-STD-1344,
Method 1008. The wired receptacle shall be mounted on the divider and mated to the
wired plug. The wires from the plug shall remain within the test chamber. The test shall
be conducted at room temperature with a pressure differential of 1 atmosphere (101
kPa) maintained for 30 minutes.
4.5.40
Gas Tightness (see 3.6.38). Solderless wrapped connections shall be tested for gas
tightness in accordance with MIL-STD-1130.
4.5.41
Strip Force (see 3.6.39). Solderless wrapped connections shall be tested for strip force
in accordance with MIL-STD-1130.
4.5.42
Wrapper Resistance (see 3.6.40). Solderless wrapped connections shall be tested for
wrapper resistance in accordance with MIL-STD-1130.
4.5.43
Cold Handling (see 3.6.41). Mated connector assemblies shall be conditioned for 2
hours minimum at minus 25 ± 2°C. Connectors shall then be mated and demated and
removable inserts removed and installed while at the specified temperature. Connectors
shall then be inspected for material deterioration.
4.5.44
Post Test Examination (see 3.6.42). The tested connectors shall be examined for
evidence of cracking, loosening of parts, carbon tracking, excess wear, or missing parts.
5.0
5.1
Preparation For Delivery
Packaging and Packing. Unless otherwise specified in the procurement document,
packaging and packing shall be in accordance with commercial practice.
5.2
Marking. Unless otherwise specified in the procurement document, marking shall be in
accordance with commercial practice.
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