Sinodel Electronic Holding Ltd is a leading switching manufacturer of China, specialized in production of high quality membrane switch / membrane keypad, nameplate, graphic overlay, FPC (flexible PCB), touch screen and EL backlight. Membrane switch spec: 1. Maximum Circuit Rating: 35VDC, 100mA, 1W 2. Contact Resistance: 10~ 500 ohm 3. Insulation Resistance: 100M ohm at 100VDC 4. Dielectric Withstand: 250Rms (50~60Hz per min) 5. Contact Bounce: <5ms 6. Actuation Force: a) Flat type 60 ~ 300g (2 ~ 10oz.) b) Tactile type: 150 ~ 400g (6 ~ 14oz.) 7. Switch Stroke: a) Flat type 0.1 ~ 0.5mm b) Tactile type: 0.6 ~ 1.5mm 8. Cable pitch: 2.54mm, 2.50mm, 1.27mm, 1.25mm 9. Dimension tolerance: +/-0.2mm 10. Operating Temperature: -20 ~ +70 C deg 11. Storage Temperature: -40 ~ +80 C deg 12. Humidity: 40 C deg, 90% ~ 95% for 240 hours 13. Life expectancy: a) Flat type: 5,000,000 closures or more b) Tactile type: 1,000,000 closures or more