C&K 8500 Series
Subminiature Pushbutton Switches
Features/Benefits
Typical Applications
A
• Pre-travel or over-travel models
• Detection
available
• Telecommunications and
• Ratings up to 3 AMPS
• Reliable contact design
• RoHS compliant
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-63 for additional ratings.
CASE: Glass filled phenolic or diallyl phthalate (DAP) (UL 94V-0).
PLUNGER: Phenolic or glass filled polyester, black standard(UL94V-0).
CAP & FRAME: Nylon, black, standard.
ELECTRICAL LIFE:
BUSHING: Brass, nickel plated.
853X MODELS: 250,000 actuations at full load.
855X MODELS: 10,000 actuations at full load.
CONTACTS: Q contact material: Coin silver, silver plated. See page
A-63 for additional contact materials.
CONTACT RESISTANCE: Below 30 mΩ typ. initial @
2-4 V DC, 100 mA, for both silver and gold plated contacts.
TERMINALS: Q contact material: Copper alloy, silver plated. See page
A-63 for additional contact materials.
9
INSULATION RESISTANCE: 10 Ω min.
TERMINAL SEAL: Epoxy.
DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
OPERATING TEMPERATURE: –30ºC to 65ºC.
HARDWARE: Nut: Brass, nickel plated; Lockwasher: Steel, bright
nickel plated.
NOTE: Any models supplied with Q, B or G contact material are RoHS compliant. For the
latest information regarding RoHS compliance, please go to: www.ittcannon.com/rohs.
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-61 thru A-64. 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
Terminations
Solder lug
AV Right angle, PC thru-hole
PC Thru-hole
S
T
.210" high
15/32 bushing
Z
T1 15/32 bushing with frame
C
(8532 and 8534 only)
Contact Material
Q
B
G
Silver
Gold
Gold over silver
Seal
E
D
Epoxy
No epoxy seal
Cap or Plunger Color
2
1
3
9
Black
White
Red
Frame Color
Black
NONE Models without frame
2
Gray
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
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