E020 Datasheet, PDF (1/8 Pages) C&K Components – Sealed Snap-acting Momentary Pushbutton Switches

E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
Features/Benefits
• Process sealed with disposable
Typical Applications
• Instrumentation
A
splashproof boot
• Long life contact design
• Telecommunications and
networking equipment
• Snap-fitting plunger available
• Computers and peripherals
• RoHS compliant models available
Models Available
Specifications
Materials
CONTACT RATING: B contact material (EX25 Models): 0.4 VA max. CASE & BUSHING: Glass filled nylon 6/6, flame retardant
@ 20 V AC or DC max. G contact material (EX21 Models): 1 AMP
(UL 94V-0).
@120 V AC or 28 V DC or 0.4 VA max. @ 20 V AC or DC max.
Note: Break-before-make contacts. Multi-pole contacts
do not make and break simultaneously. See page A-26 for
additional ratings.
PLUNGER: Glass filled nylon or glass filled polyester (PBT)
(UL 94V-0).
SWITCH SUPPORT: Brass or steel, matte-tin.
ELECTRICAL LIFE: 60,000 make-and-break cycles at full load.
SWITCH SUPPORT RETAINER: Stainless steel.
CONTACT RESISTANCE: Below 50 mΩ typ. initial @
2–4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109Ω min.
N.O. & N.C. CONTACTS: EX25 MODELS: B contact material: Copper
alloy, with gold plate over nickel plate. EX21 MODELS: G contact
material: Coin silver, with gold plate over nickel plate. See page
A-26 for additional contact materials.
DIELECTRIC STRENGTH: 1000 Vrms min. @ sea level.
COMMON CONTACTS & ALL TERMINALS: Copper alloy, with
OPERATING TEMPERATURE: –30ºC to 75ºC.
gold plate over nickel plate. See page A-26 for additional
CAP INSTALLATION FORCE: 10 lbs. max. permissible.
contact materials.
SOLDERABILITY: Per MIL-STD-202F method 208D, or
TERMINAL SEAL: Epoxy.
EIA RS-186E method 9 (1 hour steam aging).
DISPOSABLE BOOT: Vinyl splashproof boot supplied standard.
Remove and discard only after soldering and cleaning
NOTE: Any models supplied with P, R, B or G contact material are RoHS compliant.
processes are complete.
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-22 thru A-28. For additional options not shown in catalog, consult our Customer Service Center.
All models are process sealed to withstand machine soldering temperatures and pressure wash cleaning methods.
Switch Function
E121 SPDT On-Mom. 1 Amp
E221 DPDT On-Mom. 1 Amp
E125 SPDT On-Mom. 0.4VA
E225 DPDT On-Mom. 0.4VA
Plunger
S .282" high
M .331" high, snap-fitting
S1 .332" high
Bushing
D1 Unthreaded
D3 .180" high, unthreaded
Terminations
A Right angle, PC thru-hole
AV2 Vertical right angle, PC thru-hole
C PC Thru-hole
A3 Right angle, snap-in, PC thru-hole
AV3 Vertical right angle, snap-in, PC thru-hole
V3 .460" high, V-bracket
V4 .630" high, V-bracket
V6 .460" high, V-bracket
V8 .953" high, V-bracket
V31 .460" high, snap-in V-bracket
V41 .630" high, snap-in V-bracket
V61 .460" high, snap-in V-bracket
Contact Material
B Gold
G Gold over silver
P Gold, matte-tin
R Gold over silver, matte-tin
Seal
E Epoxy and disposable
splashproof boot
A-21
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
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