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 |
-40â—¦C to 80â—¦C |
-30â—¦C to 50â—¦C |
Operating temperature |
 -20◦C to 70◦C |
-20â—¦C to 70â—¦C |
0â—¦C to 40â—¦C |
Ingress protection |
|
Can be sealed to IP67, subject to design |
|
UV resistance |
|
UV resistant materials can be specified |
|