Key Switches DIGITAST Microminiature SPDT, Key Switches Features/Benefits Typical Applications • High reliability/long life • Medical • Designed for low level • Instrumentation switching • Industrial electronics • Ready to implement on PCB • Audio electronics • Latching function available • Several button options • RoHS compliant and compatible Construction Electrical FUNCTION: momentary or push-push SWITCHING POWER MAX.: 240 mW DC CONTACT ARRANGEMENT: 1 change over contact SPDT, NO SWITCHING VOLTAGE MAX.: 24 V DC MODE OF SWITCHING: Non-shorting SWITCHING CURRENT MAX.: 10 mA DC DISTANCE BETWEEN BUTTON CENTERS: CARRYING CURRENT AT 20˚C (push-push version): 100 mA HORIZONTAL MINIMUM: 12,7 (0.500) or 17,78 (0.700) DIELECTRIC STRENGTH (50 Hz, 1 min): 500 V VERTICAL MINIMUM: 17,78 (0.700) OPERATING LIFE with or without max. switching power 6 TERMINALS: PC pins Momentary: ≥ 5 x 10 operations 5 MOUNTING: Soldering, centering pins Push-push: ≥ 5 x 10 operations CONTACT RESISTANCE: Initial ≤ 50 mΩ 6 After 5 x 10 operations: ≤ 100 mΩ Mechanical 10 INSULATION RESISTANCE: ≥ 10 Ω TOTAL TRAVEL: ≤ 3 (.0018) CAPACITANCE at f= 10 kHz: ≤ 0.8pF SWITCHING TRAVEL: 1,5 (0.0591) BOUNCE TIME: ≤ 2.5 ms LATCHING TRAVEL: 1,8 (0.0709) Operating speed 400 mm/s (15.75/s) OPERATING FORCE: 1.5 +/- 0.5 N (150 +/- 50 grams) Process Environmental SOLDERABILITY: OPERATING TEMPERATURE: -25˚C to 85˚C. Wave soldering, compatible with lead free soldering profile Hand soldering, 350˚C for 3 seconds How To Order Our easy build-a-switch concept allows you to mix and match options to create the switch you need. To order, select desired option from each category and place it in the appropriate box. Some of the configurations may not be available or could require some development. Switch A U Series D 1st LED Color*** SER Narrow button Function NONE No LED SET Wide button EE Latching RD Red SERU Switch body OA Non-latching YE Yellow only (no button) GN Green Contact Material LED AU Gold NONE No LED LED Spacing* Reference L 1 LED NONE Narrow LED Spacing SER BK AU OA Button Color** 2L 2 LED’s (TYP Europe) None (SERU) Body Color 2nd LED Color*** 7.62 Wide LED Spacing NONE White (STD) BK Black NONE No LED (TYP No. America) BRN Brown GY Gray RD Red WH White YE Yellow RD Red GN Green BU Blue Button K Reference Button Style SRK BK LED Holes SR Narrow NONE No LED holes Button Color** ST Wide L 1 LED hole BK Black 2L 2 LED holes GY Gray Latching WH White None For use with momentary switch * LED spacing only applies when 1 LED requested RD Red EE With “EE” staple for latching ** Additional button colors available by request BU Blue *** Additional LED colors available by request including Bi color configurations Dimensions are shown: mm Specifications and dimensions subject to change www.ckswitches.com D–25 DIGITAST Microminiature SPDT, Key Switches DESIGNATION SER NARROW BUTTON 17,5 (0.680) Total travel 3 (0.118) Switching travel 1.5 (0.0591) (0.2)( 5,08 5,08 0.2) 0,4 10,16 [0.0157] (0.4) ø 1 0,7 14,74 (0.0394) (0.0276) (0.6) SER SERL SER2L 1st LED 2nd LED 17,1 (0.673) SET WIDE BUTTON Total travel 3 (0.118) Switching travel 1.5 (0.0591) SET SETL SET2L 1st LED 2nd LED 17,1 (0.673) 17.3 SERU NO BUTTON [0.681] 15.24 [0.6] D 5.08 [0.2] ø 1 [0.0394] 0.4 [0.015] 0.7 [0.0276] Dimensions are shown: mm Specifications and dimensions subject to change www.ckswitches.com D–26 Key Switches 7,62 7.9 (0.3) 2,54 7.62 [0.311] 2 (0.1) [0.3] [0.787] 0.5 [0.0197] 0 0 0 0 2 2 21 21 12,3 17,3 12,3 (0.484) (0.681) 0 0 (0.484) 2 21 4.5 12.3 [0.484] [0.177] 14,3 14,3 (0.563) (0.563) 8 (0.315) 1 (0.0394) 4,5 (0.177) Key Switches DIGITAST Microminiature SPDT, Key Switches LED NONE NO LED L 1 LEDs 2L 2 LEDs 7.62 mm Spacing (TYP No. America) + + 5,08 2,54 + 5,08 5,08 2,54 [0.1] 5,08 5,08 2,54 [0.2] [0.1] [0.2] [0.2] [0.2] [0.2] [0.1] 15,24 10,16 10,16 [0.6] [0.4] [0.4] 15,24 15,24 [0.6] [0.6] NARROW SPACING (TYP EUROPE) + ø 1.0±0.1 (0.0394±0.00349) ø 1.1±0.05 (0.0433±0.00197) + 5,08 5,08 2,54 [0.2] [0.1] [0.2] 10,16 [0.4] 15,24 [0.6] TOP VIEW OF PCB BUTTON COLOR BK BLACK GY GRAY Other button colors available by request [red (RD), green (GN), white (WH), yellow (YE) , blue (BU) , orange (OG)]. LED COLOR OPTION CODE COLOR NONE Models without LED RD Red D GN Green YE Yellow CONTACT MATERIAL OPTION CODE MATERIAL AU Gold FUNCTION OPTION CODE COLOR SCHEMATIC OA Momentary 0 2 01 EE Push-Push 0 2 01 Dimensions are shown: mm Specifications and dimensions subject to change www.ckswitches.com D–27 0 0 1 2 7,62 [0.3] - - 0 0 0 0 1 2 1 2 2,54 2,54 [0.1] [0.1] 7,62 7,62 [0.3] [0.3] - 0 0 1 2 2,54 [0.1] 7,62 [0.3]