Specification
Membrane Switch
General Specification
Electrical Properties
Operating voltage ……………………………………………………………………………………………………….. 0.5 – 50V AC/DC
Operating current ……………………………………………………………………………………………………….. 40mA max AC/DC
Switched power …………………………………………………………………………………………………………… 1.0 VA max AC/DC
Insulation ………………………………………………………………………………………………………….…….…… < 10 MOhms at 100 V DC
Dielectric strength ……………………………………………………………………………………………………….. 500 V RMS at 50Hz
Contact Bounce Time
Flat membrane ……………………………………………………………………………………………………….….… < 3 msecs
Polyester domed membrane ………………………………………………………………………………………… < 20 msecs
Metal domed membrane ………………………………………………………………………………………..……… < 10 msecs
Environmental Properties
Operating Temperature
Flat polyester ……………………………………………………………………………………………………………… -40ºC to +80ºC
Polyester dome …………………………………………………………………………………………………………… -30ºC to +45ºC
Metal dome ……………………………………………………………………………………………………………….. -40ºC to +70ºC
Storage Temperature
Polyester dome …………………………………………………………………………………………………………… -40ºC to +50ºC
Metal dome ………………………………………………………………………………………………………………… -40ºC to +80ºC
Shock 3 axis – no closures ……………………………………………………………………………………..….… 25g
Shelf life at ambient temperature …………………………………………………………………………..……. 1 year
Mechanical Properties
Switch Travel
Flat menbrane ……………………………………………………………………………………………………………… 0.25mm
Polyester domed membrane …………………………………………………………………………………………. 0.60mm
Metal domed membrane ………………………………………………………………………………………………. 0.60mm
Operating Force
Polyester membranes …………………………………………………………………………………………………… 75 – 500 gms
Metal domed membranes ……………………………………………………………………………………………… 300 gms
Circuit material ……………………………………………………………………………………………………..…….. Polyester film
Conductive Materials
Standard membranes …………………………………………………………………………………………………… Silver or carbon
Metal domed membranes ………………………………………………………………………………………….…. Nickel or gold plated steel to silver or tinned copper
Life Expectancy
Flat ……………………………………………………………………………………………………………………………. 500.000 switch actuation(máx)
Metal dome ………………………………………………………………………………………………………………… 500.000 switch actuation(máx)