ET Series Sealed Subminiature Toggle Switches Features/Benefits Typical Applications Sealed against solder and cleaning Hand-held telecommunications process contaminants Instrumentation ESD protection available Medical equipment Thru-hole and surface mount models Compact size and small footprint save PCB space RoHS compliant models available Specifications Materials CONTACT RATING: B contact material: 0.4 VA max. CASE & BUSHING: Glass filled nylon 6/6, flame retardant, heat 20 V AC or DC max. See page F-35 for additional ratings. stabilized (UL 94V-0) or glass filled 4/6 nylon, flame retardant, heat stabilized (UL 94V-0). F1 conductive bushing option is impregnated ELECTRICAL LIFE: ETX1 models: 60,000 make-and-break cycles at with carbon fibers. full load. All other models: 30,000 cycles. ACTUATOR: M3 & S3 anti-static actuator: Nylon 4/6, black standard CONTACT RESISTANCE: Below 20 m typ. initial 2-4 (UL 94V-0). All other actuators: Brass, chrome plated. Internal V DC, 100 mA, for both silver and gold plated contacts. o-ring seal standard with all actuators. 9 INSULATION RESISTANCE: 10 min. SWITCH SUPPORT: Brass, tin plated. ELECTROSTATIC DISCHARGE (ESD) RESISTANT OPTION: CONTACTS & TERMINALS: B contact material: Copper alloy, M3 & S3 insulating actuator only: 9,000 V DC min. sea level, with gold plate over nickel plate. Q contact material: Copper actuator to terminals. F1 conductive bushing only: Dissipates alloy, silver plated. See F-35 for additional contact materials. up to 20,000 V DC from actuator to ground. M3 & S3 actuator and F1 bushing options are not recommended for use together. TERMINAL SEAL: Epoxy. DIELECTRIC STRENGTH: 1000 Vrms min. sea level. OPERATING TEMPERATURE: 30C to 85C. NOTE: Any models supplied with Q, B, G, P or R contact material are RoHS compliant and compatible. SOLDERABILITY: Per MIL-STD-202F method 208D, or EIA RS-186E method 9 (1 hour steam aging). NOTE: Specifications and materials listed above are for switches with standard options. For information on specific and custom switches, consult Customer Service Center. DEGREE OF PROTECTION: IP57 Protection against harmful dust deposit, full-scale voltage protection, temporary immersion. PACKAGING: Surface mount switches are shipped in tape and reel packaging, see page F-36 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 F31 thru F36. 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 ET01 SP, On-None-On Actuator M .240 high ET02 SPST, Off-None-On Bushing ET03 SP, On-Off-On M3 Plastic, anti-static, D1 .177 High, Unthreaded ET05 SP, Mom.-Off-Mom240 high F1 .177 high, unthreaded, ESD conductive S .400 high ET07 SP, On-Off-Mom. Terminations ET08 SP, On-None-Mom. L .320 high A Right angle, PC thru-hole S1 .550 high ET21 DP, On-None-On AV Vertical right angle, PC thru-hole ET23 DP, On-Off-On C PC Thru-hole ET24 DP, On-On-On SA Right angle, surface mount ET25 DP, Mom.-Off-Mom. SA1 Right angle, surface mount rear-facing ET27 DP, On-Off-Mom. V3 Vertical mount, V-bracket ET28 DP, On-None-Mom. Contact Material AV3 Vertical right angle, snap-in, PC thru-hole B Gold V31 Vertical mount, V-bracket, snap-in P Gold, matte tin W Wire wrap Seal Q Silver E Epoxy S Silver/matte-tin F G Gold over silver R Gold over silver, Plastic Actuator Color matte-tin NONENo actuator color 1 White Dimensions are shown: Inches (mm) Specifications and dimensions subject to change 26 Mar 21 www.ckswitches.com F30 ToggleToggle ET Series Sealed Subminiature Toggle Switches SWITCH FUNCTION SWITCH FUNCTION CONNECTED TERMINALS POS. 1 POS. 2 POS. 3 POS. 1 POS. 2 POS. 3 NO. MODEL C&K marking on opposite side C&K marking on opposite side POLES NO. SCHEMATIC ET01 ON NONEON 2-3 N/A 2-1 ET03 ON OFFON ET05 MOM. OFF MOM. 2-3 OPEN 2-1 SP ET07 ON OFF MOM. ET08 ON NONEMOM. 2-3 N/A 2-1 SPDT ET02 OFF NONEON OPEN N/A 3-1 SPST SPDT Terminal Nos. For Reference Only Part number shown: ET01MD1CBE ET02 Models: Omit terminal 2 ET21 ON NONEON 2-3,5-6 N/A 2-1,5-4 ET23 ON OFFON ET25 MOM. OFF MOM. 2-3,5-6 OPEN 2-1,5-4 DP ET27 ON OFF MOM. ET28 ON NONEMOM. 2-3,5-6 N/A 2-1,5-4 DPDT ET24** ON ON ON 2-3,5-6 2-3,5-4 2-1,5-4 DPDT Terminal Nos. Part number shown: ET21MD1CBE For Reference Only ** Wiring for 3-way switch MOM. = Momentary ** Wiring for 3-way switch, see Section N. All models with all options (except M3 actuator) when ordered with G, L, R or Q contact material except with F1 conductive bushing. F Dimensions are shown: Inches (mm) Specifications and dimensions subject to change 26 Mar 21 www.ckswitches.com F31