A Fascia Graphics® Membrane Keypad is custom designed and manufactured to meet the exact technical and ergonomic requirements for each customer’s specific needs. For any given market sector or application we are able to provide the perfect solution, giving our customers total freedom in design.
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. Fascia Graphics® use only the highest quality materials and latest production techniques at our UK based manufacturing facility.
From low cost prototypes to full production volumes Fascia Graphics® offers a consistently reliable product at competitive prices, with industry-leading customer service.
Features & Options for Membrane Keypads:
- 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 materials
- IP65, IP67, IP68 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
Electrical Properties
| 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
| 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 IP68, subject to design | ||
| UV resistance | UV resistant materials can be specified |