A-62

Dimensions are shown: Inches (mm)

Specifications and dimensions subject to change

www.ckswitches.com

A

8500 Series

Subminiature Pushbutton Switches

Features/Benefits

• Pre-travel or over-travel models

available

• Ratings up to 3 AMPS

• Reliable contact design

• RoHS compliant

Typical Applications

• Detection

• Telecommunications and

networking equipment

• Computers and peripherals

Specifications

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.

ELECTRICAL LIFE:

853X MODELS: 250,000 actuations at full load.

855X MODELS: 10,000 actuations at full load.

CONTACT RESISTANCE: Below 30 mΩ typ. initial @

2-4 V DC, 100 mA, for both silver and gold plated contacts.

INSULATION RESISTANCE: 109Ω min.

DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.

OPERATING TEMPERATURE: –30ºC to 65ºC.

TORQUE SPECS: T, T1 15/32” bushings - 50 in. lbs max.

All other 1/4 -40 bushing types 12 in. lbs max.

Materials

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.

BUSHING: Brass, nickel plated.

CONTACTS: Q contact material: Coin silver, silver plated. See page

A-65 for additional contact materials.

TERMINALS: Q contact material: Copper alloy, silver plated. See page

A-65 for additional contact materials.

TERMINAL SEAL: Epoxy.

HARDWARE: Nut: Brass, nickel plated; Lockwasher: Steel, bright

nickel plated.

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)

Contact Material

Q Silver

B Gold

G Gold over silver

Seal

E Epoxy

D No epoxy seal

Cap or Plunger Color

2 Black

1 White

3 Red

9 Gray

Frame Color

2 Black

NONE Models without frame

Models Available

Terminations

Z Solder lug

AV*Right angle, PC thru-hole

C PC Thru-hole

* Available with M or S plunger models, and B contact material only.