8500 Series
Subminiature Pushbutton Switches
Features/Benefits
Pre-travel or over-travel models
•
A
Pushbutton
available
• Ratings up to 3 AMPS
• Reliable contact design
• RoHS compliant
Typical Applications
• Detection
•
Telecommunications and
networking equipment
• Computers and peripherals
Models Available
Specifications
Materials
CONTACT RATING: Q contact material (853X Models): 1 AMP @
120 V AC or 28 V DC; (855X Models): 3 AMPS @ 120 V AC or
28 V DC. See page A-65 for additional ratings.
CASE: Glass filled phenolic or diallyl phthalate (DAP) (UL 94V-0).
ELECTRICAL LIFE:
853X MODELS: 250,000 actuations at full load.
855X MODELS: 10,000 actuations at full load.
PLUNGER: Phenolic or glass filled polyester, black standard(UL94V-0).
CAP & FRAME: Nylon, black, standard.
BUSHING: Brass, nickel plated.
CONTACTS: Q contact material: Coin silver, silver plated. See page
A-65 for additional contact materials.
CONTACT RESISTANCE: Below 30 mΩ typ. initial @
2-4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109Ω min.
TERMINALS: Q contact material: Copper alloy, silver plated. See page
A-65 for additional contact materials.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
TERMINAL SEAL: Epoxy.
OPERATING TEMPERATURE: –30ºC to 65ºC.
HARDWARE: Nut: Brass, nickel plated; Lockwasher: Steel, bright
nickel plated.
TORQUE SPECS: T, T1 15/32” bushings - 50 in. lbs max.
All other 1/4 -40 bushing types 12 in. lbs max.
NOTE: Any models supplied with Q, B or G contact material are RoHS compliant.
NOTE: Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
Build-A-Switch
To order, simply select desired option from each category and place in the appropriate box. Available options are shown
and described on pages A-63 thru A-66. For additional options not shown in catalog, consult Customer Service Center. All
models have epoxy terminal seal and are compatible with all “bottom-wash” PCB cleaning methods.
Switch Function
8531 SPST Off-Mom. 1 Amp
8532 SPST Off-Mom. 1 Amp
8533 SPST On-Mom. 1 Amp
8534 SPST On-Mom. 1 Amp
8551 SPST Off-Mom. 3 Amps
8552 SPST Off-Mom. 3 Amps
Actuator or Plunger
M .150” high
J81 Snap-in with frame
J82 Snap-in with frame for LED
S .210” high
T 15/32 bushing
T1 15/32 bushing with frame
(8532 and 8534 only)
Terminations
Z Solder lug
AV* Right angle, PC thru-hole
C PC Thru-hole
Contact Material
Q Silver
B Gold
Seal
G Gold over silver
E Epoxy
D No epoxy seal
Cap or Plunger Color
2 Black
1 White
3 Red
Frame Color
9 Gray
2 Black
NONE Models without frame
* Available with M or S plunger models, and B contact material only.
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A-62
www.ckswitches.com
8500 Series
Subminiature Pushbutton Switches
SWITCH FUNCTION
A
POS. 1
NO.
POLES
SP
MODEL
NO.
POS. 2
RATING
8531
1 AMP
8551
3 AMPS
Pushbutton
SWITCH FUNCTION
TOTAL TRAVEL
with overtravel
.042 (1,07) TYP.
ACTUATION
FORCE
SCHEMATIC
OFF
MOM.
.095 (2,41) TYP.
7.7 oz (220g) TYP.
N.O. with overtravel
OFF
MOM.
.050 (1,27) TYP.
6 oz (170g) TYP.
N.O.
ON
MOM.
.080 (2,03) TYP.
with pretravel
.057 (1,45) TYP.
11.5 oz (456 g) TYP.
N.C. with pretravel
.032 (0,81) TYP.
with overtravel
.028 (0,71) TYP.
10.3 oz (282g) TYP.
N.C. with overtravel
SPST
Part number shown: 8531MZQE2
SP
8532
1 AMP
8552
3 AMPS
SPST
Part number shown: 8532MZQE2
SP
8533
1 AMP
8534
1 AMP
ON
MOM.
SPST
Part number shown: 8533MZQE2
MOM. = Momentary
All models
with all options when ordered with G or Q contact material.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A-63
www.ckswitches.com
8500 Series
Subminiature Pushbutton Switches
PLUNGER COLOR
Pushbutton
A
PLUNGER
M .150” HIGH PLUNGER
ACTUATOR OR PLUNGER
S .210” HIGH PLUNGER
PANEL MOUNTING
OPTION
CODE
NOTE: One mounting nut and lockwasher supplied with all actuators (except T actuator: two nuts supplied).
PLUNGER COLOR
2
BLACK
3
RED
CAP COLOR
ACTUATOR
ACTUATOR OR PLUNGER
T 15/32 BUSHING
PANEL MOUNTING
OPTION
CODE
CAP COLOR
NOTE: No frame color choice required.
2
BLACK
T1 15/32 BUSHING WITH FRAME
1
WHITE
3
RED
9
GRAY
Cap Finish: gloss. Other colors available,
consult Customer Service Center.
One mounting nut and lockwasher
supplied with all actuators (except T
actuator: two nuts supplied).
NOTE: Caps available for plunger
options, see page A-65.
NOTE: No frame color choice required.
Available with 8532 and 8534 models only.
CAP COLOR
ACTUATOR—SNAP-IN FRONT MOUNT
J81 SNAP-IN WITH FRAME
ACTUATOR OR PLUNGER
FRAME COLOR
OPTION
CODE
2
CAP AND FRAME
COLOR
BLACK
Cap and Frame Finish: matte.
Other colors available,
consult Customer Service Center.
One mounting nut and lockwasher
supplied with all actuators.
NOTE: Caps & frames available
separately, see pages A-65 and A-66.
J82 SNAP-IN WITH FRAME FOR LED
NOTE: LED snaps
securely into frame.
Height depends on
LED used.
LED not included.
For LED information, see page A-66.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A-64
www.ckswitches.com
8500 Series
Subminiature Pushbutton Switches
TERMINATIONS
A
PC MOUNTING
AV RIGHT ANGLE, PC THRU-HOLE
Available with
MODEL NO.
DIM. "X"
NOTE: Available with M or S plunger models, and B contact material only.
DIM “X”
8531, 8533
0.550
8532, 8534
0.438
CONTACT MATERIAL
OPTION
CODE
RoHS
COMPLIANT *
RoHS
COMPATIBLE *
TERMINAL
PLATING
CONTACT
MATERIAL
B
YES
YES
GOLD 1
GOLD
LOW LEVEL/DRY CIRCUIT
Q
YES
YES
SILVER 4
SILVER 5
POWER
G
YES
YES
GOLD OVER
SILVER 2
GOLD 3
LOW LEVEL/DRY
CIRCUIT OR POWER
RATINGS
0.4 VA MAX. @ 20 V AC OR DC MAX.
853X MODELS: 1 AMP @ 120 V AC OR 28 V DC.
855X MODELS: 3 AMPS @ 120 V AC OR 28 V DC.
0.4 V MAX @20 V AC OR DC MAX. OR 853X MODELS: 1 AMP @
120 V AC OR 28 V DC. 855X MODELS: 3 AMPS @120 V AC OR 28 V DC.
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1 CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate.
NOTE: Any models supplied with Q, B or G contact material are RoHS compliant.
2 CONTACTS: Coin silver, with gold plate over nickel plate.
All models
3 TERMINALS: Copper alloy, with gold plate over nickel plate.
with all options when ordered with G or Q contact material.
Q contact material standard with C, Z terminations.
4 CONTACTS: Coin silver, silver plated.
8551 & 8552 available with Q contact material only.
5 TERMINALS: Copper alloy, silver plated.
SEAL
E EPOXY SEAL
REPLACEMENT HARDWARE
Cap for 0.157” dia. plungers
Cap, J80, J81 & J 82 options only
Frame
.330 DIA.
(8,38)
.150 (3,81)
FOR 267A
.200 (5,08)
FOR 8931
PART NO.
267A01000
267A02000
267A03000
267A09000
.300
(7,62)
PART NO.
WHITE
BLACK
RED
GRAY
893101000
893102000
893103000
893109000
WHITE
BLACK
RED
GRAY
85X2T, 8534T
models only
85X1T, 8532T1,
8533T, 8534T1 models only
Material: Nylon
Finish: Gloss
Material: Nylon
Finish: Gloss
PART NO.
448901000
448902000
448903000
448909000
WHITE
BLACK
RED
GRAY
PART NO.
613302263 BLACK
Material: Nylon
Finish: Gloss or
matte
Other colors available, consult Customer Service Center.
Material: Nylon
Finish: Matte
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A-65
www.ckswitches.com
Pushbutton
C PC THRU-HOLE
Z SOLDER LUG
8500 Series
Subminiature Pushbutton Switches
AVAILABLE HARDWARE
Pushbutton
A
Frame
PART NO.
615602263 BLACK
Material: Nylon
Finish: Matte
NOTE: Additional nuts, locking rings and lockwashers available separately, see section
“Technical Data and Additional Hardware”.
Other colors available, consult Customer Service Center.
Frames snap into panel opening and are independent from switch mounting. Accurate positioning of the PC
mounted switch relative to the panel opening is necessary to provide proper clearance between actuator and
frame. Available in two basic styles and four panel thicknesses .047-.125 in. Material: Nylon. Finish: Matte.
Panel Inserts
.090” (2,29) PANEL THK.
.125” (3,18) PANEL THK.
PART NO.
PART NO.
432702263
432802263 BLACK
TYPICAL APPLICATION
Above frames (part nos. 432XXXXXX) are also available with insert which accepts LED for
indicator light assembly. Order insert separately from frame. Blank insert panel (without hole
for LED) also available. LED not included.
PANEL INSERT
WITH HOLE FOR LED
BLANK PANEL INSERT
WITHOUT HOLE FOR LED
PART NO.
PART NO.
894902000
476602000 BLACK
Special colors, custom markings available, consult Customer Service Center.
LED INFORMATION
Process Information: Soldering to LED leads must be completed within 5 seconds
at 500ºF (260ºC) maximum.
LEDs are not supplied with J82 option. LED snaps into switch frame surrounding
actuator and is wired externally.
Flat denotes
cathode.
.230 DIA.
(5,84˘)
.200 DIA.
(5,08˘)
.025 SQ.
TYP. (0,63)
.030
(0,76)
.340
(8,64)
.750
(19,05)
Suggested LED for J82 option.
Dimensions for reference only.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A-66
www.ckswitches.com