A-29

Dimensions are shown: Inches (mm)

Specifications and dimensions subject to change

www.ckswitches.com

A

8020 Series

Snap-acting Momentary Pushbutton Switches

Features/Benefits

bottom wash cleaning

Typical Applications

Specifications

CONTACT RATING: B contact material (8X25 Models): 0.4 VA max.

@ 20 V AC or DC maximum. G contact material (8X21, U8X1

Models): 1 AMP @ 120 V AC or 28 V DC or 0.4 VA max. @ 20 V

AC or DC max. Note: Break-before-makecontacts. Multi-pole

contacts do not make and break simultaneously. See page A-43

for additional ratings.

ELECTRICAL LIFE: 60,000 make-and-break cycles at full load.

CONTACT RESISTANCE: Below 50 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: 8X2X MODELS: –30ºC to 75ºC.

U8X1 MODELS: –30ºC to 65ºC.

CAP INSTALLATION FORCE: 10 lbs. max. permissible.

SOLDERABILITY: Per MIL-STD-202F method 208D, or EIA RS-186E

method 9 (1 hour steam aging).

NOTE: Any models supplied with B, P, R, 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.

Materials

CASE: Glass filled nylon 6/6 or diallyl phthalate (DAP),

flame retardant (UL 94V-0).

PLUNGER: Glass filled nylon or glass filled polyester (PBT) (UL 94V-0).

CAP & FRAME: Nylon, black, standard.

BUSHING: Brass or zinc, nickel plated.

HOUSING: Stainless steel.

SWITCH SUPPORT: Brass or steel, matte-tin plated.

N.O. & N.C. CONTACTS: 8X21, U8X1 MODELS: G contact material:

Coin silver, with gold plate over nickel plate. See page A-43 for

additional contact materials.

8X25 MODELS: B contact material: Copper alloy, with gold plate

over nickel plate. See page A-43 for additional contact materials.

COMMON CONTACT & ALL TERMINALS: Copper alloy, with gold

plate over nickel plate.

TERMINAL SEAL: Epoxy. Refer to soldering and cleaning

Technical Data Chapter.

HARDWARE: Nut & Locking Ring: Brass, nickel plated;

Lockwasher: Steel, nickel plated.

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-30 thru A-45. 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

Note: UL models

available, see page A-30

and A-31.

Actuator or Plunger

S

Plunger

flush cap

flush cap

L

Plunger

M

Snap-fitting plunger

Bushing

choice required

keyway, hi torque

Contact Material

matte-tin

Seal

base

Cap Color

without caps

Frame Color

without frame

LED Color

without LED

Terminations

A

Right angle, PC thru-hole

C

PC Thru-hole

Z

Solder lug

Models Available

9 Feb 22