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Membrane Keypads
Membrane Keypads
Solar Biotronic Laboratories offer Membrane Keypads, these keypads comprise of a snap dome switch and screen printed (with Silver Alloy Paste) polyester which is used as a base and for the circuit. A layer of polyester or polycarbonate covers and seals this assembly using industrial grade adhesives made by manufacturers like 3m, avery dennison, etc. These keyboards can also accommodate LEDs of various colours and shapes. The connections are brought out on a flexible tail which has a crimped type of connector at the other end. The overlay layouts can be made as per customers' requirements and any colour shade can be used for the keys as well as the backgrounds.
Electrical:
- Contact Arrangement: SPST Normally Open
- Current / Voltage Rating: 10 ma at 24 VDC (max) in to resistive load only
- Contact Resistance: Compatible with MOS, TTL & DTL Circuits
- Contact Bounce: Less than 10 milliseconds at make & 20 milliseconds at break
- Life expectancy: 3,00,000 operations per key
- Key Travel: 0.380 mm nominal key travel
- Operating Force: 280 +/- 60 gram force
- Operating Temp: 0ºC to + 50ºC
- Keyboard Thickness: 1.5 mm max
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