8500 Series Subminiature Pushbutton Switches Features/Benefits Typical Applications A • Pre-travel or over-travel models • Detection n available • Telecommunications and o t • Ratings up to 3 AMPS networking equipment t u • Reliable contact design • Computers and peripherals b h • RoHS compliant s u P 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: 853X MODELS: 250,000 actuations at full load. BUSHING: Brass, nickel plated. 855X MODELS: 10,000 actuations at full load. CONTACTS: Q contact material: Coin silver, silver plated. See page CONTACT RESISTANCE: Below 30 mΩ typ. initial @ A-65 for additional contact materials. 2-4 V DC, 100 mA, for both silver and gold plated contacts. TERMINALS: Q contact material: Copper alloy, silver plated. See page INSULATION RESISTANCE: 109Ω min. A-65 for additional contact materials. DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level. TERMINAL SEAL: Epoxy. OPERATING TEMPERATURE: –30ºC to 65ºC. HARDWARE: Nut: Brass, nickel plated; Lockwasher: Steel, bright 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 G Gold over silver Seal 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

8500 Series Subminiature Pushbutton Switches SWITCH FUNCTION A SWITCH FUNCTION P u POS. 1 POS. 2 s h b NO. MODEL ACTUATION u POLES NO. RATING TOTAL TRAVEL FORCE SCHEMATIC t t 8531 1 AMP o SP OFF MOM. .095 (2,41) TYP. with overtravel 7.7 oz (220g) TYP. N.O. with overtravel n .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. .057 (1,45) TYP. 11.5 oz (456 g) TYP. N.C. with pretravel SP with overtravel 8534 1 AMP ON MOM. .032 (0,81) TYP. .028 (0,71) TYP. 10.3 oz (282g) TYP. N.C. with overtravel 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 A ACTUATOR OR PLUNGER M S n .150” HIGH PLUNGER .210” HIGH PLUNGER PANEL MOUNTING o t OPTION t CODE PLUNGER COLOR u b 2 BLACK h 3 RED s u P NOTE: One mounting nut and lockwasher supplied with all actuators (except T actuator: two nuts supplied). CAP COLOR ACTUATOR ACTUATOR OR PLUNGER T 15/32 BUSHING PANEL MOUNTING OPTION CODE CAP COLOR NOTE: No frame color choice required. 2 BLACK T1 15/32 BUSHING WITH FRAME 1 WHITE 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 J81 SNAP-IN WITH FRAME OPTION CAP AND 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

8500 Series Subminiature Pushbutton Switches TERMINATIONS A Z SOLDER LUG C PC THRU-HOLE PC MOUNTING P u s h b u t t o AV n 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 B YES YES GOLD 1 GOLD LOW LEVEL/DRY CIRCUIT 0.4 VA MAX. @ 20 V AC OR DC MAX. Q YES YES SILVER 4 SILVER 5 POWER 853X MODELS: 1 AMP @ 120 V AC OR 28 V DC. 855X MODELS: 3 AMPS @ 120 V AC OR 28 V DC. G YES YES GOLD OVER GOLD 3 LOW LEVEL/DRY 0.4 V MAX @20 V AC OR DC MAX. OR 853X MODELS: 1 AMP @ SILVER 2 CIRCUIT OR POWER 120 V AC OR 28 V DC. 855X MODELS: 3 AMPS @120 V AC OR 28 V DC. * 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 267A02000 BLACK 893102000 BLACK PART NO. 267A03000 RED 893103000 RED 448901000 WHITE 267A09000 GRAY 893109000 GRAY 448902000 BLACK 85X2T, 8534T 85X1T, 8532T1, 448903000 RED PART NO. models only 8533T, 8534T1 models only 448909000 GRAY 613302263 BLACK Material: Nylon Material: Nylon Material: Nylon Material: Nylon Finish: Gloss Finish: Gloss Finish: Gloss or Finish: Matte matte Third Angle Other colors available, consult Customer Service Center. Projection 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 n o t t u b PART NO. h 615602263 BLACK NOTE: Additional nuts, locking rings and lockwashers available separately, see section “Technical Data and Additional Hardware”. s Material: Nylon Other colors available, consult Customer Service Center. u Finish: Matte P 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 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 Process Information: Soldering to LED leads must be completed within 5 seconds Flat denotes .025 SQ. at 500ºF (260ºC) maximum. cathode. .20(50, 0D8IA˘). TYP. (0,63) 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˘) .340 .750 (8,64) (19,05) 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

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: C &K Switches: 8531MCQE2 8531TZQE3 8531MZQE2 8532TCQE2 8532TZGE2 8532T1ZQE3 8532T1ZQE2 8532MZQE2 8534T1ZQE2 8532MZBE3 8532T1ZBE2 8532TZQE2 8532T1ZBE3 8551MZQE2 8551TCQE2 8533MCQE2 8532J82ZQE22 8532MCQE2 8531SCQE2 8532MCBE3 8534MZQE2 8534SCGE2 498800201 8531J82ZBE22 8531J82ZQE22 8531MAVBE2 8532TZBE1 8533TZBE3 8534SZBE2 8551TZQE1 8532MZBE2 8531J81CQE12 8531SZBE3 8532J81CBE22 8532J81ZBE22 8532T1ZGE9 8533J81ZBE12 8533SZGE2 8534T1ZBE2 8534TCBE2 8534TZGE2 8551J81CQE12 8551MCQE2 8551SZGE2 8552MZQE3 8531J81CQE22 8531J81ZGE32 8531J81ZQE22 8531J81ZQE32 8531J82ZGE22 8531MCBE2 8531MCGE2 8531MZBE2 8531MZBE3 8531MZGE2 8531MZQE3 8531SZBE2 8531SZGE2 8531SZQE2 8531SZQE3 8531TCBE2 8531TCGE2 8531TCQE2 8531TCQE3 8531TZBE2 8531TZBE3 8531TZGE2 8531TZQE2 8532J81ZQE22 8532J81ZQE92 8532MCBE2 8532MZGE2 8532MZQE3 8532SAVBE2 8532SCGE2 8532SCQE3 8532SZBE2 8532SZQE2 8532SZQE3 8532T1CBE2 8532T1CQE2 8532T1ZBE1 8532T1ZQE1 8532T1ZQE9 8532TCBE2 8532TZBE2 8532TZQE3 8533MZBE2 8533MZGE2 8533MZQE2 8533SCQE3 8533SZQE2 8533TCBE2 8533TCGE2 8533TCQE2 8533TZGE2 8533TZQE2 8534J81ZQE12 8534MCQE2 8534MZBE2