Pushbutton EP Series Sealed Tiny Pushbutton Switches Features/Benefits Typical Applications A Sealed against solder & T elecommunications and cleaning processes networking equipment Thru-hole and surface mount models Computers and peripherals Snap-fitting actuator accepts Instrumentation and controls standard caps Tape & reel packaging available RoHS compliant models available Models Available Specifications Materials CONTACT RATING: B contact material: 0.4 VA max. CASE & BUSHING: High temperature material, glass filled nylon 4/6, 20 V AC or DC max. See page A-13 for additional ratings. flame retardant, heat stabilized (UL 94V-0) on EP11 / EP12 models glass filled nylon 6/6 on EP21. ELECTRICAL LIFE: EP11, EP21 models: 60,000 make-and-break cycles at full load. EP12 models: 30,000 cycles. PLUNGER: Thermoplastic polyester or glass filled nylon (UL 94V-0), with internal o-ring seal. SA surface mount: High temperature CONTACT RESISTANCE: Below 20 m9 typ. initial material, glass filled LCP (UL 94V-0). 2-4 V DC, 100 mA, for both silver and gold plated contacts. 9 SWITCH SUPPORT: Brass, matte-tin plated. INSULATION RESISTANCE: 10 9 min. CONTACTS & TERMINALS: B contact material: Copper alloy, DIELECTRIC STRENGTH: 1000 Vrms min. sea level. with gold plate over nickel plate. See page A-13 for additional OPERATING TEMPERATURE: 30C to 85C. contact materials. SOLDERABILITY: Per MIL-STD-202F method 208D, or TERMINAL SEAL: Epoxy. EIA RS-186E method 9 (1 hour steam aging). NOTE: Any models supplied with Q, B, P, S, R or G contact material are RoHS compliant. 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 standard in anti-static tape and reel packaging per EIA 481-3, see page A-14 for CAUTION: PC mounting layouts and pads as shown are designed to be compatible with the latest equipment and reflow techniques. Care should be taken in the design and location of drawings and reel information. Tape and cover strip are PC lands to suit individual needs. Orientation relative to reflow direction may significantly conductive for use near statically sensitive components, impact solder joint integrity. 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-10 thru A-14. For additional options not shown in catalog, consult Customer Service Center. All models are process sealed to withstand machine soldering temperatures and pressure wash cleaning methods. Switch Function EP11 SPST Off-Mom. Plunger EP12 SPDT On-Mom. S .215 high EP21 DPST Off-Mom. S1 .110 high S2 .465 high FP Flush Seal R Snap-fitting, .215 high E Epoxy (not available with EP12 version) Bushing D1 Unthreaded Terminations A Right angle, PC thru-hole C PC Thru-hole Contact Material AV Vertical right angle, PC thru-hole B Gold AV3 Vertical right angle, snap-in, PC thru-hole P Gold, matte-tin SA Right angle, surface mount Q Silver SA1 Right angle, surface mount rear facing S Silver, matte-tin V3 Vertical mount, v-bracket G Gold over silver V31 Vertical mount, v-bracket, snap-in R Gold over silver, matte tin (EP11 & EP12 only) W Wire wrap Dimensions are shown: Inches (mm) Specifications and dimensions subject to change 5 Aug 20 www.ckswitches.com A-9EP Series Sealed Tiny Pushbutton Switches SWITCH FUNCTION A SWITCH FUNCTION CONNECTED TERMINALS POS. 1 POS. 2 POS. 1 POS. 2 NO. MODEL C&K marking on opposite side C&K marking on opposite side POLES NO. SCHEMATIC EP11 OFF MOM. OPEN 1-3 SPST SP EP12 ON MOM. 2-1 2-3 SPDT SPDT Omit terminal 2 for EP11 models. Terminal Nos. Part number shown: EP12SD1CBE For Reference Only DP OFF MOM. OPEN 1-3,4-6 EP21 DPST DPST Terminal Nos. For Reference Only Part number shown: EP21SD1CBE MOM. = Momentary All models with all options when ordered with G, Q, R or S contact material. PLUNGER S .215 HIGH S1 .110 HIGH S2 .465 HIGH FP FLUSH PLUNGER R SNAP-FITTING FP & R actuators are not available with EP21 model. S1& S2 actuators are not available with EP12 & EP21 models. R actuators are not available with EP12 model. NOTE: Caps available for plunger options, see page A-14. BUSHING D1 UNTHREADED NOTE: Internal actuator o-ring standard. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change 5 Aug 20 www.ckswitches.com A-10 Pushbutton