Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www
.ittcannon.com
A–19
C&K E020 Series
Sealed Snap-acting Momentary Pushbutton Switches
Features/Benefits
• Process sealed with disposable
splashproof boot
• Long life contact design
• Snap-fitting plunger available
• RoHS compliant models available
T
ypical Applications
• Instrumentation
• Telecommunications and
networking equipment
• Computers and peripherals
Specifications
CONTACT RATING: B contact material (EX25 Models): 0.4 VA max.
@ 20 V AC or DC max. G contact material (EX21 Models): 1 AMP
@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-24 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: 10
9
Ω
min.
DIELECTRIC STRENGTH: 1000 Vrms min. @ sea level.
OPERATING TEMPERATURE: –30ºC to 75ºC.
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 P, R, 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.
Materials
CASE & BUSHING: Glass filled nylon 6/6, flame retardant
(UL 94V-0).
PLUNGER: Glass filled nylon or glass filled polyester (PBT)
(UL 94V-0).
SWITCH SUPPOR
T: Brass or steel, matte-tin.
SWITCH SUPPORT RETAINER: Stainless steel.
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-28 for additional contact materials.
COMMON CONTACTS & ALL TERMINALS: Copper alloy, with
gold plate over nickel plate. See page A-24 for additional
contact materials.
TERMINAL SEAL: Epoxy.
DISPOSABLE BOOT: Vinyl splashproof boot supplied standard.
Remove and discard only after soldering and cleaning
processes are complete.
Build-A-Switch
T
o order, simply select desired option from each category and place in the appropriate box. Available options are shown
and described on pages A-20 thru A-26. For additional options not shown in catalog, consult our Customer Service Center.
All models ar
e pr
ocess 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
Contact Material
B Gold
K Gold, tin-lead
G Gold,
ma
tte-tin
P Gold over silver
L Gold over silver, tin-lead
R Gold over silver, matte-tin
Seal
E Epoxy and disposable
splashproof boot
Models Available
Terminations
A Right angle,
PC thru-hole
AV2 Vertical right angle, PC thru-hole
C PC Thru-hole
A3 Right angle,
sna
p-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,
sna
p-in
V
-bracket
V41 .630" high, snap-in V-bracket
V61 .460" high, snap-in V-bracket
