8500 Series Subminiature Pushbutton Switches Features/Benefits Typical Applications A • Pre-travel or over-travel models • Detection available • Telecommunications and • Ratings up to 3 AMPS networking equipment • Reliable contact design • Computers and peripherals • RoHS compliant Models Available Specifications Materials CONTACT RATING: Q contact material (853X Models): 1 AMP @ CASE: Glass filled phenolic or diallyl phthalate (DAP) (UL 94V-0). 120 V AC or 28 V DC; (855X Models): 3 AMPS @ 120 V AC or PLUNGER: Phenolic or glass filled polyester, black standard(UL94V-0). 28 V DC. See page A-65 for additional ratings. CAP & FRAME: Nylon, black, standard. ELECTRICAL LIFE: BUSHING: Brass, nickel plated. 853X MODELS: 250,000 actuations at full load. 855X MODELS: 10,000 actuations at full load. CONTACTS: Q contact material: Coin silver, silver plated. See page A-65 for additional contact materials. CONTACT RESISTANCE: Below 30 mΩ typ. initial @ 2-4 V DC, 100 mA, for both silver and gold plated contacts. TERMINALS: Q contact material: Copper alloy, silver plated. See page 9 A-65 for additional contact materials. INSULATION RESISTANCE: 10 Ω min. TERMINAL SEAL: Epoxy. DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level. HARDWARE: Nut: Brass, nickel plated; Lockwasher: Steel, bright OPERATING TEMPERATURE: –30ºC to 65ºC. nickel plated. TORQUE SPECS: T, T1 15/32” bushings - 50 in. lbs max. All other 1/4 -40 bushing types 12 in. lbs max. NOTE: Any models supplied with Q, B or G contact material are RoHS compliant. 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-63 thru A-66. 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 8531 SPST Off-Mom. 1 Amp 8532 SPST Off-Mom. 1 Amp 8533 SPST On-Mom. 1 Amp 8534 SPST On-Mom. 1 Amp 8551 SPST Off-Mom. 3 Amps 8552 SPST Off-Mom. 3 Amps Actuator or Plunger M .150” high J81 Snap-in with frame J82 Snap-in with frame for LED Terminations S .210” high Z Solder lug T 15/32 bushing AV* Right angle, PC thru-hole T1 15/32 bushing with frame C PC Thru-hole (8532 and 8534 only) Contact Material Q Silver B Gold Seal G Gold over silver E Epoxy D No epoxy seal Cap or Plunger Color * Available with M or S plunger models, and B contact material only. 2 Black 1 White 3 Red Frame Color 9 Gray 2 Black NONE Models without frame Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-62 Pushbutton Pushbutton 8500 Series Subminiature Pushbutton Switches SWITCH FUNCTION A SWITCH FUNCTION POS. 1 POS. 2 NO. MODEL ACTUATION POLES NO. RATING TOTAL TRAVEL FORCE SCHEMATIC 8531 1 AMP with overtravel SP OFF MOM. .095 (2,41) TYP. 7.7 oz (220g) TYP. N.O. with overtravel .042 (1,07) TYP. 8551 3 AMPS SPST Part number shown: 8531MZQE2 8532 1 AMP SP OFF MOM. .050 (1,27) TYP. 6 oz (170g) TYP. N.O. 8552 3 AMPS SPST Part number shown: 8532MZQE2 with pretravel 8533 1 AMP ON MOM. .080 (2,03) TYP. 11.5 oz (456 g) TYP. N.C. with pretravel .057 (1,45) TYP. SP with overtravel 8534 1 AMP ON MOM. .032 (0,81) TYP. 10.3 oz (282g) TYP. N.C. with overtravel .028 (0,71) TYP. SPST Part number shown: 8533MZQE2 MOM. = Momentary All models with all options when ordered with G or Q contact material. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-63 8500 Series Subminiature Pushbutton Switches PLUNGER COLOR PLUNGER ACTUATOR OR PLUNGER A M .150” HIGH PLUNGER S .210” HIGH PLUNGER PANEL MOUNTING OPTION CODE PLUNGER COLOR 2 BLACK 3 RED CAP COLOR NOTE: One mounting nut and lockwasher supplied with all actuators (except T actuator: two nuts supplied). ACTUATOR ACTUATOR OR PLUNGER PANEL MOUNTING T 15/32 BUSHING OPTION CODE CAP COLOR NOTE: No frame color choice required. 2 BLACK 1 WHITE T1 15/32 BUSHING WITH FRAME 3 RED 9 GRAY Cap Finish: gloss. Other colors available, consult Customer Service Center. One mounting nut and lockwasher supplied with all actuators (except T actuator: two nuts supplied). NOTE: Caps available for plunger NOTE: No frame color choice required. options, see page A-65. Available with 8532 and 8534 models only. CAP COLOR ACTUATOR—SNAP-IN FRONT MOUNT ACTUATOR OR PLUNGER FRAME COLOR OPTION CAP AND FRAME J81 SNAP-IN WITH FRAME CODE COLOR 2 BLACK Cap and Frame Finish: matte. Other colors available, consult Customer Service Center. One mounting nut and lockwasher supplied with all actuators. NOTE: Caps & frames available separately, see pages A-65 and A-66. J82 SNAP-IN WITH FRAME FOR LED NOTE: LED snaps securely into frame. Height depends on LED used. LED not included. For LED information, see page A-66. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-64 Pushbutton Pushbutton 8500 Series Subminiature Pushbutton Switches TERMINATIONS A C PC THRU-HOLE Z SOLDER LUG PC MOUNTING AV RIGHT ANGLE, PC THRU-HOLE Available with DIM. "X" MODEL NO. DIM “X” 8531, 8533 0.550 NOTE: Available with M or S plunger models, and B contact material only. 8532, 8534 0.438 CONTACT MATERIAL OPTION RoHS RoHS TERMINAL CONTACT RATINGS CODE COMPLIANT * COMPATIBLE * PLATING MATERIAL 1 YES YES GOLD GOLD LOW LEVEL/DRY CIRCUIT 0.4 VA MAX. @ 20 V AC OR DC MAX. B 4 5 853X MODELS: 1 AMP @ 120 V AC OR 28 V DC. YES YES SILVER SILVER POWER Q 855X MODELS: 3 AMPS @ 120 V AC OR 28 V DC. GOLD OVER 0.4 V MAX @20 V AC OR DC MAX. OR 853X MODELS: 1 AMP @ YES YES 3 LOW LEVEL/DRY G GOLD 2 SILVER 120 V AC OR 28 V DC. 855X MODELS: 3 AMPS @120 V AC OR 28 V DC. CIRCUIT OR POWER * Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications. 1 CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate. NOTE: Any models supplied with Q, B or G contact material are RoHS compliant. 2 CONTACTS: Coin silver, with gold plate over nickel plate. All models with all options when ordered with G or Q contact material. 3 TERMINALS: Copper alloy, with gold plate over nickel plate. Q contact material standard with C, Z terminations. 4 CONTACTS: Coin silver, silver plated. 8551 & 8552 available with Q contact material only. 5 TERMINALS: Copper alloy, silver plated. SEAL E EPOXY SEAL REPLACEMENT HARDWARE Cap for 0.157” dia. plungers Cap, J80, J81 & J 82 options only Frame .330 DIA. (8,38) .150 (3,81) FOR 267A .200 (5,08) FOR 8931 .300 (7,62) PART NO. PART NO. 267A01000 WHITE 893101000 WHITE PART NO. 267A02000 BLACK 893102000 BLACK 267A03000 RED 893103000 RED 448901000 WHITE 267A09000 GRAY 893109000 GRAY 448902000 BLACK PART NO. 448903000 RED 85X2T, 8534T 85X1T, 8532T1, 448909000 GRAY 613302263 BLACK models only 8533T, 8534T1 models only Material: Nylon Material: Nylon Material: Nylon Material: Nylon Finish: Gloss Finish: Gloss Finish: Gloss or Finish: Matte Third Angle matte Projection Other colors available, consult Customer Service Center. Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-65 8500 Series Subminiature Pushbutton Switches AVAILABLE HARDWARE A Frame PART NO. NOTE: Additional nuts, locking rings and lockwashers available separately, see section 615602263 BLACK “Technical Data and Additional Hardware”. Other colors available, consult Customer Service Center. Material: Nylon Finish: Matte TYPICAL APPLICATION Frames snap into panel opening and are independent from switch mounting. Accurate positioning of the PC 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 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. LED INFORMATION .025 SQ. Flat denotes Process Information: Soldering to LED leads must be completed within 5 seconds .200 DIA. TYP. (0,63) cathode. (5,08˘) at 500ºF (260ºC) maximum. LEDs are not supplied with J82 option. LED snaps into switch frame surrounding actuator and is wired externally. .030 .230 DIA. (0,76) (5,84˘) .750 .340 (19,05) (8,64) Suggested LED for J82 option. Dimensions for reference only. Third Angle Projection Dimensions are shown: Inches (mm) Specifications and dimensions subject to change www.ckswitches.com A-66 Pushbutton