ED & EDM Domes Features Typical Applications • Aircraft • Short travel • Instrument • Good tactile feedback • Panels • Self cleaning • Radio equipment • 3 actuation forces • RoHS Specification Electrical Silver Gold ED: Disc element EDM: Disc element and double dome MAXIMUM POWER: 1.0 VA 0.2 VA FUNCTION: Momentary action MAXIMUM VOLTAGE: 100 VDC 100 VDC MINIMUM VOLTAGE: 20m VDC 20m VDC CONTACT TYPE: Normally open - SPST MIN/MAX CURRENT: 1.0 mA - 100 mA 50µA - 50 mA TERMINALS: Through hole PCB terminations or Tabs DIELECTRIC STRENGTH: ≥ 250 Vrms OPERATING LIFE: 1,000,000 CONTACT RESISTANCE: ≤ 100 mΩ INSULATION RESISTANCE: Initial measurement: ≥ 1 GΩ Packaging (between terminals) After damp heat: ≥ 10 MΩ Trays 50 pieces. BOUNCE TIME: ≤ 3 ms Environmental Silver Gold Mechanical OPERATING TEMPERATURE: -25˚C to 70˚C -55˚C to 85˚C Operating force Tactile Return Type Newtons (grams) Feeling (∆%) Force N Travel (mm) EDSAC LFS 2.4 (240) ± 25% ≥ 30% ≥ 0.4 N 0.3mm ± 0.15 EDSSC LFS 2.4 (240) ± 25% ≥ 30% ≥ 0.4 N 0.3mm ± 0.15 EDM450SAC LFS 4.5 (450) ± 25% ≥ 25% ≥ 1.0 N 0.5mm ± 0.25 EDM650SSC LFS 6.5 (650) ± 25% ≥ 25% ≥ 1.6 N 0.6mm ± 0.25 SIMULTANEITY: ≤ 0.05 mm 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. D E D 1 Contact Material S Silver Lead Free Compatible G Gold LFS RoHS, Silver tabs ** Terminals Disc LFG RoHS, Gold tabs ** AC with pc pins* 1 Sealed, IP 67 LFT RoHS, Pure tin (terminals only) * SC with tabs ** E 4 5 0 C L F G D M S S Operation Force Lead Free Compatible 450 4.5 N (450 grams) 650 6.5 N (650 grams) LFS RoHS, Silver tabs ** Terminals Contact Material LFG RoHS, Gold tabs ** S Silver AC with pc pins * LFT RoHS, Pure tin (terminals only) * G Gold SC with tabs ** Note * AC terminals only available with LFT ** SC terminals only available with LFS or LFG Dimensions are shown: mm Specifications and dimensions subject to change www.ckswitches.com D–28 Key Switches Key Switches ED & EDM Domes ED EDM B B 0 1,2 ø -0,1 ø0,05 A 10,8 max ( sur clinquants ) 10,8 max ( sur clinquants ) 0,01 12,7±0,3 10,35±0,15 0,1 A 90˚ 12,7±0,3 A 0,25 A ø 11,8± 0,15 36˚ ø 11,8± 0,15 10,35±0,15 Zone de soudure ultra sons IMPLANTATION CIRCUIT IMPRIME +0,2 10 0 15±0,2 D Switch Action Principal The disc contact is essentially made Upper Diaphragm of two separate conductive dome Pressure diaphragms separated by an insulated material. Insulating The upper diaphragm is shaped so Lower Diaphragm washer that under pressure it collapses Circular contact area suddenly and establishes contact with the lower diaphragm. Switch in resting position Switch in active position Dimensions are shown: mm Specifications and dimensions subject to change www.ckswitches.com D–29 4,5 ±0,5 +0,06 2±0,3 1,2 -0,1 Apres assemblage 11,3 ±0,15 +0,02 0,5 -0,04 +0,03 +0,06 2 -0,01 1,2 -0,1 11,3 0,35 ( course relative ) 0,55±0,1 0,9±0,1