C&K ET Series
Sealed Subminiature Toggle Switches
Features/Benefits
Typical Applications
• Sealed against solder and cleaning
• Hand-held telecommunications
• Instrumentation
• Medical equipment
process contaminants
• ESD protection available
• Thru-hole and surface mount models
• Compact size and small footprint
save PCB space
• RoHS compliant models available
Models Available
Specifications
Materials
CONTACT RATING: B contact material: 0.4 VA max. @
20 V AC or DC max. See page F-32 for additional ratings.
CASE & BUSHING: Glass filled nylon 6/6, flame retardant, heat
stabilized (UL 94V-0). SA surface mount: High temperature
material, glass filled 4/6 nylon, flame retardant, heat stabilized
(UL 94V-0). F1 conductive bushing option is impregnated
with carbon fibers.
ELECTRICAL LIFE: ETX1 models: 60,000 make-and-break cycles at
full load. All other models: 30,000 cycles.
CONTACT RESISTANCE: Below 20 m Ω typ. initial @ 2-4
ACTUATOR: M3 & S3 anti-static actuator: Nylon 4/6, black standard
(UL 94V-0). All other actuators: Brass, chrome plated. Internal
o-ring seal standard with all actuators.
V DC, 100 mA, for both silver and gold plated contacts.
9
INSULATION RESISTANCE: 10 Ω min.
ELECTROSTATIC DISCHARGE (ESD) RESISTANT OPTION:
M3 & S3 insulating actuator only: 9,000 V DC min. @ sea level,
actuator to terminals. F1 conductive bushing only: Dissipates
up to 20,000 V DC from actuator to ground. M3 & S3 actuator
and F1 bushing options are not recommended for use together.
SWITCH SUPPORT: Brass, tin plated.
CONTACTS & TERMINALS: B contact material: Copper alloy,
with gold plate over nickel plate. Q contact material: Copper
alloy, silver plated. See G-35 for additional contact materials.
TERMINAL SEAL: Epoxy.
DIELECTRIC STRENGTH: 1000 Vrms min. @ sea level.
OPERATING TEMPERATURE: –30ºC to 85ºC.
SOLDERABILITY: Per MIL-STD-202F method 208D, or
EIA RS-186E method 9 (1 hour steam aging).
NOTE: Any models supplied with Q, B, G, P or R contact material are RoHS compliant
and compatible. For the latest information regarding RoHS compliance, please go to:
www.ittcannon.com/rohs.
DEGREE OF PROTECTION: IP57; Protection against harmful dust
deposit, full-scale voltage protection, temporary immersion.
NOTE: Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
PACKAGING: Surface mount switches are shipped in tape and reel
packaging, see page G-35 for drawings and reel information.
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 G–31 thru G–35. 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
Actuator
ET01 SP, On-None-On
ET02 SPST, Off-None-On
ET03 SP, On-Off-On
ET05 SP, Mom.-Off-Mom.
ET07 SP, On-Off-Mom.
ET08 SP, On-None-Mom.
ET21 DP, On-None-On
ET23 DP, On-Off-On
M
.240" high
Bushing
M3 Plastic, anti-static,
D1 .177" High, Unthreaded
F1 .177" high, unthreaded, ESD conductive
.240" high
S
L
.400" high
.320" high
Terminations
A
Right angle, PC thru-hole
AV Vertical right angle, PC thru-hole
PC Thru-hole
S1 .540" high
C
ET24 DP, On-On-On
SA Right angle, surface mount
SA1 Right angle, surface mount rear-facing
V3 Vertical mount, V-bracket
AV3 Vertical right angle, snap-in, PC thru-hole
V31 Vertical mount, V-bracket, snap-in
ET25 DP, Mom.-Off-Mom.
ET27 DP, On-Off-Mom.
ET28 DP, On-None-Mom.
Contact Material
W
Wire wrap
B
K
P
Gold
Gold, tin-lead
Gold, matte tin
Seal
E Epoxy
G
Q Silver
G Gold over silver
Plastic Actuator Color
NONE No actuator color
L
Gold over silver,
tin-lead
2
1
Black
White
R
Gold over silver,
matte-tin
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
www.ittcannon.com
G–30
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