Membrane Switch

Membrane Switch, in simple terms, is a momentary switching device in which at least one contact is on or made of, a flexible substrate.

Advantages

> High reliability > Long life
> Low cost
> Dust proof
> Water proof
> Rust proof
> Easy installation
> Design flexibility - can be custom designed to fit a wide variety of applications wherever low current momentary switches are required

Common applications
> Home appliances
> Medical Equipment
> Industrial Process Controllers
> Computer Peripherals
> Military Applications

Membrane Switch General specifications

Vmax 30V (DC)
Imax 100mA
Contact Resistance: 10ohm - 500ohm
Insulation Resistance: 100m (at 250V)
Dielectric Withstand: 250Vrms (50-60Hz)
Contact Bounce: less than 5ms
Operating Temperature: -35 C - + 85 C
Allowable Humidity: 95%
* Depending on trace length and materials used

Membrane Switch Specifications for different type

Model / Product type Specifications

General Membrane Switch Actuation force: 4 - 16 oz.
Switch travel (nom): .005 - .010
Life expectancy**: > 5 million times

Polyester Dome (Polydome) Membrane Switch Actuation force: 8 - 24 oz.
Switch travel (nom): .020 - .030
Life expectancy **: > 1 million times

Metal Dome Membrane Switch Actuation force: 9 - 14 oz.
Switch travel (nom): .020
Life expectancy **: > 1 million times

Metal Dome Membrane Switch
with Electro-Luminescent (EL) lamp and LED Actuation force: 10 - 15 oz.
Switch travel (nom): .020
Life expectancy **: > 1 million times