It is a membrane switch with PCB panel instead of circuit. Contact point can be metal dome, poly dome and flat. metal dome, LED and other components can be pasted on the PCB panel.
Electrical features
Return circuit resistance: Generally 1ohm length cm*width mm(can be different when necessary)
Contact resistance: Bellow 2ohm
Circuit rating: Bellow 35VDC, 100mA, 750mV (as the request of customer)
Dielectric withstand voltage: 250VRms(50-60Hz 1min)
Insulation resistance: Above 100Mohm100V
Contact bounce: Bellow 100ms
Mechanical features
Life expectancy: Flat type more than 1 million times
Tactile type more than 500, 000times
Actuation force: Flat type 50-280g
Tactile type 180-400g
Switch stroke: Flat type 0.1-0.4mm
Tactile type 0.5-1.0mm
Environmental
Operating temperature: -22-60degrees
Storage temperature: -30-75degrees
Humidity: 35degrees, 90%-95%, 180hours