Pushbutton E020 Series Sealed Snap-acting Momentary Pushbutton Switches Features/Benefits Typical Applications A • Process sealed with disposable • Instrumentation splashproof boot • Telecommunications and • Long life contact design 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. PLUNGER: Glass filled nylon or glass filled polyester (PBT) Note: Break-before-make contacts. Multi-pole contacts (UL 94V-0). do not make and break simultaneously. See page A-26 for SWITCH SUPPORT: Brass or steel, matte-tin. additional ratings. SWITCH SUPPORT RETAINER: Stainless steel. ELECTRICAL LIFE: 60,000 make-and-break cycles at full load. N.O. & N.C. CONTACTS: EX25 MODELS: B contact material: Copper CONTACT RESISTANCE: Below 50 m21Ω typ. initial @ alloy, with gold plate over nickel plate. EX21 MODELS: G contact 2–4 V DC, 100 mA, for both silver and gold plated contacts. material: Coin silver, with gold plate over nickel plate. See page 9 INSULATION RESISTANCE: 10 Ω min. A-26 for additional contact materials. DIELECTRIC STRENGTH: 1000 Vrms min. @ sea level. COMMON CONTACTS & ALL TERMINALS: Copper alloy, with OPERATING TEMPERATURE: –3021ºC to 75º21C. gold plate over nickel plate. See page A-26 for additional contact materials. CAP INSTALLATION FORCE: 10 lbs. max. permissible. TERMINAL SEAL: Epoxy. SOLDERABILITY: Per MIL-STD-202F method 208D, or DISPOSABLE BOOT: Vinyl splashproof boot supplied standard. EIA RS-186E method 9 (1 hour steam aging). 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 Bushing S1 .332” high D1 Unthreaded D3 .180” high, unthreaded Terminations A Right angle, PC thru-hole Contact Material AV2 Vertical right angle, PC thru-hole B Gold C PC Thru-hole G Gold over silver A3 Right angle, snap-in, PC thru-hole P Gold, matte-tin AV3 Vertical right angle, snap-in, PC thru-hole R Gold over silver, matte-tin V3 .460” high, V-bracket V4 .630” high, V-bracket V6 .460” high, V-bracket V8 .953” high, V-bracket Seal V31 .460” high, snap-in V-bracket E Epoxy and disposable V41 .630” high, snap-in V-bracket splashproof boot V61 .460” high, snap-in V-bracket Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-21 E020 Series Sealed Snap-acting Momentary Pushbutton Switches SWITCH FUNCTION A SWITCH FUNCTION CONNECTED TERMINALS POS. 1 POS. 2 POS. 1 POS. 2 NO. MODEL POLES NO. C&K marking this side C&K marking this side SCHEMATIC E121 ON MOM. SP 1-3 1-2 E125 ON MOM. SPDT SPDT Terminal Nos. For Reference Only Part number shown: E121SD1CGE E221 ON MOM. DP 1-3,4-6 1-2,4-5 E225 ON MOM. DPDT DPDT Terminal Nos. Part number shown: E221SD1CBE For Reference Only MOM. = Momentary EX25 models must be ordered with B or P contact material. EX21 models must be ordered with G or R contact material. E121, E221 models with all options when ordered with G or R contact material. PLUNGER S .282” HIGH S1 .332” HIGH M .332” HIGH SNAP-FITTING Not Available with D1 bushing. NOTE: Caps available for all plunger options, see page A-27. BUSHING D1 UNTHREADED D3 .180” HIGH UNTHREADED Not available with S1 actuator. Third Angle NOTE: Disposable splashproof vinyl over actuator and bushing supplied std., see page A-26. Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-22 Pushbutton Pushbutton E020 Series Sealed Snap-acting Momentary Pushbutton Switches TERMINATIONS A C PC THRU-HOLE PC MOUNTING SPDT and DPDT A RIGHT ANGLE, PC THRU-HOLE E121SD1AGE SPDT SECTION A-A PC MOUNTING A3 RIGHT ANGLE, SNAP-IN, PC THRU-HOLE NOTE: Terminal bend radii and lead-in manufacturing option. A RIGHT ANGLE, PC THRU-HOLE E221SD1AGE DPDT SECTION A-A A3 RIGHT ANGLE, SNAP-IN, PC THRU-HOLE PC MOUNTING NOTE: Terminal bend radii and lead-in manufacturing option. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-23 E020 Series Sealed Snap-acting Momentary Pushbutton Switches TERMINATIONS A AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, .150” PITCH E121SD1AV2GE SPDT SECTION A-A AV3 VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE, .150” PITCH PC MOUNTING NOTE: Terminal bend radii and lead-in manufacturing option. AV2 VERTICAL RIGHT ANGLE, PC THRU-HOLE, .150” PITCH E221SD1AV2GE DPDT SECTION A-A AV3 VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE, .150” PITCH PC MOUNTING NOTE: Terminal bend radii and lead-in manufacturing option. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-24 Pushbutton Pushbutton E020 Series Sealed Snap-acting Momentary Pushbutton Switches TERMINATIONS A V3, V4 VERTICAL MOUNT, V-BRACKET V31, V41 VERTICAL MOUNT, V-BRACKET, SNAP-IN PC MOUNTING Dim 'A' E121SD3__GE SPDT SNAP-IN OPTION CODE DIM ‘A’ V3, V31 .460 (11,68) V4, V41 .630 (16,00) V3, V4 VERTICAL MOUNT, V-BRACKET V31, V41 VERTICAL MOUNT, V-BRACKET, SNAP-IN PC MOUNTING E221SD3__GE Dim 'A' DPDT SNAP-IN OPTION CODE DIM ‘A’ V3, V31 .460 (11,68) V4, V41 .630 (16,00) V6, V8 VERTICAL MOUNT, V-BRACKET V61, V81 VERTICAL MOUNT, V-BRACKET, SNAP-IN .122 DIA. PC MOUNTING .192 (4,88) .060 MAX. (1,53) C&K MARKING ON OPPOSITE SIDE E121SD3__GE .180 DIM ’A’ (4,57) SPDT OPTION 1 2 3 CODE DIM ‘A’ C NO NC .185 (4,70) .050 (1,27) .020 TYP. .030 X .050 TYP. V6, V61 .460 (11,68) (0,51) (0,76) (1,27) .250 (6,35) V8, V81 .953 (24,21) .185 TYP. .360 (4,70) (9,14) .750 (19,05) Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-25 e12xsd3v8qe-cat E020 Series Sealed Snap-acting Momentary Pushbutton Switches TERMINATIONS A V6, V8 VERTICAL MOUNT, V-BRACKET V61, V81 VERTICAL MOUNT, V-BRACKET, SNAP-IN PC MOUNTING Dim 'A' SNAP-IN E221SD3V6GE OPTION CODE DIM ‘A’ DPDT V6, V61 .460 (11,68) V8, V81 .953 (24,21) CONTACT MATERIAL OPTION CONTACT TERMINAL CODE MATERIAL PLATING RATINGS B 1 GOLD 1 EX25 MODELS ONLY: 0.4 VA MAX. GOLD LOW LEVEL/DRY CIRCUIT 4 MATTE-TIN @ 20 V AC OR DC MAX. P G 3 GOLD GOLD OVER EX21 MODELS ONLY: 0.4 VA MAX @ 20 V AC OR 2,3 LOW LEVEL/DRY CIRCUIT OR POWER SILVER 4 MATTE-TIN DC MAX. OR 1 AMP @ 120 V AC OR 28 V DC. R * Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications. 1 NOTE: Any models supplied with P, R, B or G contact material are RoHS compliant. CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate. 2 N.O. AND N.C. CONTACTS: Coin silver, with gold plate over nickel plate. E121, E221 models with all options when ordered with mandatory 3 G, or R contact material. COMMON CONTACTS & ALL TERMINALS: Copper alloy, with gold plate over nickel plate. P or B contact material must be ordered with EX25 models. 4 TERMINALS: Copper alloy, with matte-tin alloy over nickel plate. R or G contact material must be ordered with EX21 models. SEAL E EPOXY SEAL AND DISPOSABLE SPLASHPROOF BOOT Disposable splashproof boot supplied standard. Remove and discard boot only after soldering and cleaning processes are complete. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-26 Pushbutton Pushbutton E020 Series Sealed Snap-acting Momentary Pushbutton Switches AVAILABLE HARDWARE A Cap Cap Cap .200 DIA. (5,08 ) .120 (3,05) .155 (3,94) PART NO. PART NO. PART NO. 708901000 WHITE 752701000 WHITE 801801000 WHITE 708902000 BLACK 752702000 BLACK 801802000 BLACK 708903000 RED 752703000 RED 801803000 RED Material: Nylon Material: Nylon Material: Nylon Finish: Gloss Finish: Gloss Finish: Gloss Cap, Snap-fitting plunger Cap, Snap-fitting plunger Cap PART NO. PART NO. PART NO. PART NO. 452D01000 WHITE 894101000 WHITE 484601000 WHITE 798201000 WHITE 452D02000 BLACK 894102000 BLACK 484602000 BLACK 798202263 BLACK 452D03000 RED 894103000 RED 484603000 RED 798203000 RED Material: Nylon Material: Nylon Material: Nylon Material: Nylon Finish: Gloss Finish: Gloss Finish: Gloss Finish: Matte NOTE: Other cap colors available, consult Customer Service Center. Frames snap into panel opening and are independent from switch mounting. Accurate positioning of the PC TYPICAL APPLICATION mounted switch relative to the panel opening is necessary to provide proper clearance between actuator and frame. Available in two basic styles and four panel thicknesses .047-.125 in. Material: Nylon. Finish: Matte. .090” (2,29) PANEL THK. .125” (3,18) PANEL THK. PART NO. PART NO. 432702263 432802263 BLACK Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-27 E020 Series Sealed Snap-acting Momentary Pushbutton Switches AVAILABLE HARDWARE A PANEL INSERTS Above frames (part nos. 432XXXXXX) are also available with insert which accepts LED for indicator light assembly. Order insert separately from frame. Blank insert panel (without hole for LED) also available. LED not included. PANEL INSERT BLANK PANEL INSERT WITH HOLE FOR LED WITHOUT HOLE FOR LED PART NO. PART NO. 894902000 476602000 BLACK Special colors, custom markings available, consult Customer Service Center. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-28 Pushbutton