90B
Thru-Hole DIP Switches
Series 78
76
FEATURES
• Raised and Recessed Slides
• SPST, 2PST, 3PST, 4PST
• Sealed Base Standard
• Spring and Ball Contact
• Top Tape Seal Option
SPST To 4PST Slide
78
DIP Switches
DIMENSIONS
In inches (and millimeters)
Double Pole/Single Throw and Typical
Multiple Pole Switch with Raised Slides
Single Pole/Single Throw Switch in Raised and Recessed Slides
O
N
1 2 3 4 5 6 7 8 9 10
.380 ± .010
(9,65 ± 0,25)
Note:
Recessed slides have a dimple for
tool actuation. For recessed slides,
the .295 dimension does not apply.
SEE ORDERING
INFORMATION
A
.020
± .002
(0,51
± 0,05)
.020 ± .002 (0,51 ± 0,05)
.090 ± .005 (2,29 ± 0,13)
.100 ± .005 (2,5 ± 0,13)
Single Pole/Single Throw Switch
O
N
1
SEE ORDERING
INFORMATION
C
L
1
.180 ± .010 (4,57 ± 0,25)
.012 ± .001 (0,30 ± 0,03)
.300 + .030 –.000
(7,62 + 0,76)
2
3
4
5
.020 ± .002 (0,51 ± 0,05)
.090 ± .005 (2,29 ± 0,13)
.100 ± .005 (2,5 ± 0,13)
C
L C
L
ORDERING INFORMATION
circuitry
Typical Multiple
Pole Switch
DIM. B = 2PST = .100 (2,54
3PST = .200 (5,08)
± .002
4PST = .300 (7,62)
(± 0,05)
.295 + .000 –.020
(7,49 –0,51)
A = .245 + .000 –.020
(6,22 + 0,51)
.050 ± .005
(1,27 ± 0,13)
TYP.
C
L
1 2 3 4
.380 ± .010
(9,65 ± 0,25)
.156 + .015 –.010
(3,96 + 0,38 –0,25) TYP.
C
L C
L
O
N
2
SEE ORDERING
INFORMATION
.070 (1,78) REF.
.060 ± .002 (1,52 ± 0,05)
1
O
N
O
N
1 2 3 4
Typical Circuit
Diagram
O
N
1
For switches with 5, 6, 7, 8, or 10PST circuitry,
contact Grayhill.
No. of
Length
Circuitry Positions Inches
Length
Metric
No./ Raised Recessed
Tube
Slides*
Slides*
SPST
2
3
4
5
6
7
8
9
10
12
0.280"
0.380"
0.480"
0.580"
0.680"
0.780"
0.880"
0.980"
1.080"
1.280"
7,1mm
9,7mm
12,2mm
14,7mm
17,3mm
19,8mm
22,4mm
24,9mm
27,4mm
32,5mm
35
27
21
18
15
13
12
10
9
8
78B02
78B03
78B04
78B05
78B06
78B07
78B08
78B09
78B10
78B12
78RB02
78RB03
78RB04
78RB05
78RB06
78RB07
78RB08
78RB09
78RB10
78RB12
2PST
1
2
3
4
5
6
0.280"
0.480"
0.680"
0.880"
1.080"
1.280"
7,1mm
12,2mm
17,3mm
22,4mm
27,4mm
32,5mm
35
21
15
12
9
8
78F01
78F02
78F03
78F04
78F05
78F06
Recessed
Slides
Not Available
3PST
1
2
3
0.380"
0.680"
0.980"
9,7mm
17,3mm
24,9mm
27
15
10
78G01
78G02
78G03
4PST
1
2
0.480"
0.880"
12,2mm
22,4mm
21
12
78H01
78H02
*A top tape seal is required for switches that are
machine soldered or heavily cleaned after hand
soldering. To order top seal versions, add "S" to
the Grayhill part number.
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales
Office, an authorized local Distributor or Grayhill.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Thru-Hole DIP Switches
Specifications: Standard Styles
Ratings
78
90B
2,000
2,000
2,000
Make-and-break Current Rating: Operations
per switch position at these resistive loads
1 mA, 5 Vdc; 50 mA, 30 Vdc; or 150 mA, 30 Vdc:
10 mA, 30 Vdc; or 10 mA, 50 mVdc:
10 mA, 50 mVdc; or 25 mA, 24 Vdc; or 100 mA, 6 Vdc:
2,000
—
—
2,000
—
—
—
2,000
2,000
≤ 30 mΩ
≤ 100 mΩ
≤ 30 mΩ
≤ 100 mΩ
≤ 20 mΩ
≤ 100 mΩ
Insulation Resistance:
Minimum, at 100 Vdc between adjacent closed
contacts and also across open switch contacts
Initially (Mohms):
After life (Mohms):
5,000
1,000
5,000
1,000
5,000
1,000
Dielectric Strength: Minimum voltage (AC,
RMS) measured between adjacent closed
contacts and also across open switch contacts.
lnitially:
After life:
750 V
500 V
750 V
500 V
500 V
500 V
Contact Resistance: Initially:
After life, at 10 mA, 50 mVdc, open circuit:
Current Carry Rating: Maximum rise of 20°C
5 A
4 A
3A
Switch Capacitance: At 1 megahertz
2 pF
2 pF
2 pF
Operating Temperature Range:
-40°C to + 85°C
-40°C to + 85°C
-40°C to + 85°C
Storage Temperature Range:
-55°C to + 85°C
-55°C to + 85°C
-55°C to + 85°C
Mechanical Ratings
Vibration Resistance: Per Method 204, Test
Condition B, 1 mS opening (10 mS allowed)
Mechanical Shock: Per Method 213, Test
Condition A. 1 mS opening (10 mS allowed)
Thermal Shock Resistance: Per specification;
no failures; passes contact resistance.
Terminal Strength: Per specification
Thermal Aging: 1,000 hours at 85°C; no failures.
Environmental Ratings
Meets all requirements of MIL- S-83504.**
Where Grayhill performance is superior, the MIL
spec is listed in parentheses.
Moisture Resistance: Per MIL-STD-202,
Method 106.
Soldering Information
Series 90 MIDIP and Series 76 recessed rocker
(76RSB style) sealed switches have been tested
to EIA Standard RS-448-2. Similar performance
can be expected from other sealed Series 76
and 78 DIP switches.
Solderability: Per MIL-STD-202, Method 208
Resistance to Soldering Heat: 76RSB:
Passes EIA Standard using two, four, and six
second soldering time. 90: Per MIL-S-83504,
six second test.
Fluxing: Per EIA RS-448-2 with flux touching
switch body.
Cleaning: 76, 78 and 90 series tape sealed
products: Passes immersion test using water/
detergent. Acceptable solutions include 1-1-1
trichlorethane, freon, (TF, TE, or TMS), isopropyl
alcohol, detergent (140°F maximum). Terpene
acceptable for Series 90 only. Solutions which are
not recommended include acetone, methylene
chloride, freon TMC.
DIP Switches
76
Mechanical Life: Operations per switch position
Materials and Finishes
Shorting Member (Ball): Brass, gold-plated
over nickel barrier.
Base Contacts: Copper alloy, gold-plated
over nickel barrier.
Terminals: Copper alloy, matte tin plated over
nickel barrier.
Non-Conductive Parts: Thermoplastic
(UL94V-O)
Potting Material: Epoxy, 76,78 only.
Protective Cover: 76,78, only-Polycarbonate.
Tape Seal:
76, 78: Polyester film
90: Polyimide film
Tape Seal Integrity: Passes gross leak test
using 125°C flourinert for 20 seconds minimum.
Reference MIL-STD-202, Method 112.
Recommended Soldering Conditions:
Reflow Soldering
Profile:
(260°C
Peak Temperature)
Wave Soldering: 260°C maximum solder temperature for 5 seconds max.
** Note: 100% matte tin terminal plating does not meet MIL-S-83504 for lead content.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
DIP
14