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LIGHT GUIDE FILM MEMBRANE KEYBOARD
Our Membrane Keypads, also known as Membrane Keyboards or Membrane Switches, are renowned for providing absolute reliability even in the most hostile of operating environments.
Features & Options for Membrane Keypads, Membrane Keyboards and Membrane Switches:
- Wide variety of Polyester and Polycarbonate finishes
- Materials suitable for extreme or harsh conditions
- Chemical resistant materials
- Anti-microbial materials
- UV resistant materials
- ATEX approved membrane keypads
- IP54, IP65, IP67 rated – subject to Engineering approval
- Tactile or non-tactile response keys
- Embossing; rim, pillow, braille, dome or combination
- LED’s can be integrated within the assembly
- RFI/ESD/EMC shielding
- Backlighting
- Interchangeable legend and inserts
- Integrated with flexible circuits or PCB technology
- Can be mounted to Steel/Aluminium panels or ABS mouldings
- UL Approved Membrane Switches, Membrane Keypads and Membrane Keyboards
Electrical Properties
Electrical Properties of Membrane Keypads, Membrane Keyboards and Membrane Switches:
| Metal Dome Tactile | Non-Tactile | Polydome | |
| Contact bounce time | <10ms | <3ms | <20ms |
| Typical closed switch loop resistance | ≤ 100 Ω | ≤ 100 Ω | ≤ 100 Ω |
| Closed switch loop resistance | ≤ 5 k Ω | ≤ 5 kΩ | ≤ 5k Ω |
| Insulation resistance | |||
| With crossover | ≥ 0,1M Ω | ≥ 0,1M Ω | ≥ 0,1 MΩ |
| Without crossover | ≥ 10 MΩ | ≥ 10 MΩ | ≥ 10 MΩ |
| Operating voltage (switched) | Min. 0.5V Max. 30V | Min. 0.5V Max. 30V | Min. 0.5V Max. 30V |
| Operating current (switched) | ≤ 50mA | ≤ 50mA | ≤ 50mA |
| Operating power (switched) | Max. 1W | Max. 1W | Max. 1W |
Environmental Properties
Environmental Properties of membrane keypads, membrane Keyboards and Membrane Switches:
| Metal Dome Tactile | Non-Tactile | Polydome Overlay | |
| Storage temperature | -40◦C to 80◦C | -40◦C to 80◦C | -30◦C to 50◦C |
| Operating temperature | -20◦C to 70◦C | -20◦C to 70◦C | 0◦C to 40◦C |
| Ingress protection | Can be sealed to IP67, subject to design | ||
| UV resistance | UV resistant materials can be specified |
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