8700 Series Overtravel Pushbutton Switches Features/Benefits Typical Applications A Extended pre-travel or over-travel Telecommunications Heavy-duty brass plunger High end Instrumentation Long electrical life 100K cycles Medical & test equipment RoHS compliant Detection Specifications Materials CONTACT RATING: Q contact material: 1 AMP CASE: Diallyl phthalate (DAP) (UL 94V-0). 120 V AC or 28 V DC. See page A-76 for additional ratings. PLUNGER: ELECTRICAL LIFE: 100,000 actuations at full load. 8731 .39074 brass, nickel plated. 8732 .39074 PBT polyester, black. CONTACT RESISTANCE: Below 30 m typ. Initial 2-4 V DC, 100 mA. BUSHING: brass, nickel plated. 3 INSULATION RESISTANCE: 10 min. CONTACTS: Q contact material: Coin silver, silver plated. See page A-76 for additional contact materials. DIELECTRIC STRENGTH: 1,000 Vrms min. sea level. TERMINALS: Q contact material: Copper alloy, silver plated. See page OPERATING TEMPERATURE: 30C to 65C. A-76 for additional contact materials. NOTE: Any models supplied with Q, or B contact material are RoHS compliant. TERMINAL SEAL: Epoxy. NOTE: Specifications and materials listed above are for switches with standard options. HARDWARE: Nut: Brass, nickel plated lockwasher: Steel, bright nickel For information on specific and custom switches, consult Customer Service Center. plate. One mounting nut & lockwasher supplied with all switches. 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-75 and A-76. For additional options not shown in catalog, consult Customer Service Center. All models have epoxy terminal seal and are compatible with all bottom-wash PCB cleaning methods. Switch Function 8731 SPST Off-Mom. 8732 SPST Off-Mom. Plunger S .390 high, brass S1 .390 high, polyester Bushing H .250 high Terminations Z Solder lug Contact Material Q Silver B Gold Seal E Epoxy Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-74 PushbuttonPushbutton 8700 Series Overtravel Pushbutton Switches SWITCH FUNCTION A SWITCH FUNCTION POS. 1 POS. 2 NO. ACTUATION POLES MODEL NO. TOTAL TRAVEL FORCE SCHEMATIC with overtravel SP 8731 OFF MOM390 (9,91) TYP. 4.7 oz TYP. N.O. with overtravel .311 TYP. SPST SPST Part number shown: 8731SHZQE with overtravel SP OFF MOM390 (9,91) TYP. 2.2 oz TYP. 8732 N.O. with overtravel .350 TYP. SPST SPST Part number shown: 8732S1HZQE MOM. = Momentary PLUNGER S .390 HIGH, BRASS S1 .390 HIGH, PBT POLYESTER Available with 8731 model only. Available with 8732 model only. BUSHING H .250 HIGH PANEL MOUNTING Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-75