| Description:
A membrane switch consists of two polyester films screen printed with conductive ink to complete the circuit. A spacer in between two circuits which is die cut at contact points. The die-cut holes allow the touch of a finger to close the contact, completing the circuit. The circuit is broken when released. The panel posterior is laminated with an adhesive for mounting to a backer or enclosure and is terminated with a means for interfacing with the customer's electronics.
Specification:
Membrane switch keypad inquiry kindly provide detailed specification for quotation.
1. Environmental:
(1) Operating temperature: -40°C to +80°C (-40° to 176°F).
(2) Storage temperature: -40°C to +85°C (-40°to 185°F).
(3) Humidity: 40°C, 90% to 95% for 240 hours.
(4) Vibration: 20G's max.
2. Mechanical:
(1) Actuation force: Non-tactile 60g to 300g (2oz to 10oz), tactile 150g to 400g (6oz to 14oz).
(2) Switch stroke:
(3) Life expectancy: non-tactile 0.1 to 0.5mm, tactile 0.6 to 1.5mm, non-tactile >5 million actuations, tactile > 1 million actuations.
3. Electrical:
(1) Operating voltage: 35 volts maximum.
(2) Operating current.
(3) Operating power: 10 microamps to 100 milliamps, resistive 1 watt maximum.
(4) Circuit resistance: 10 ohms to 500 ohms, dependent on size and layout.
(5) Insulation resistance: 100M ohms at 100V DC.
(6) Dielectric withstand: > 250 VRMs (50-60Hz 1 minute).
(7) Contact bounce: <= 5 milliseconds. |
