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Technic >> Membrane switch |
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 Standard
structure: |
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| Overlay
material: |
| Item |
PET |
PC |
PVC |
Silicone |
| Life-time
of bending |
very good |
good |
bad |
very good |
| Corrosion
resistance |
good |
good |
very good |
good |
| Wear
resistance |
very good |
very good |
bad |
good |
| Insulation |
good |
normal |
very good |
very good |
| Transparence |
very good |
very good |
normal |
bad |
| Temperature
level |
good |
good |
normal |
good |
| UV
resistance |
bad |
bad |
normal |
bad |
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| Circuit
layer: |
| There are 2 different material, FPC (Flexible
Printed Circuit) and PET membrane circuit. PET membrane
circuit is widely used for membrane switches because of
its lower cost and good performance. If there are some
SMD components and circuit is complex, it is better to
select FPC. |
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| Membrane switch standard specification: |
| Electrical |
| Maximum
Circuit Rating |
35VDC, 100mA,
1W |
| Contact
Resistance |
10¦¸~ 500¦¸ |
|
Insulation Resistance |
100M¦¸ at 100VDC |
| Dielectric
Withstand |
250Rms (50~60Hz
per min) |
| Contact
Bounce |
<5ms |
| Mechanical |
Actuation
Force
|
a) Flat type 60
~ 300g (2 ~ 10oz.)
b) Tactile type: 150 ~ 400g (6 ~ 14oz.) |
Switch
Stroke
|
a) Flat type 0.1
~ 0.5mm
b) Tactile type: 0.6 ~ 1.5mm |
Cable
pitch
|
2.54mm, 2.50mm,
1.27mm, 1.25mm |
| Tolerance |
+/- 0.2mm |
| Environment |
Operating
Temperature
|
-20¡æ ~ +70¡æ |
Storage
Temperature
|
-40¡æ ~ +80¡æ |
Humidity
|
40¡æ, 90% ~ 95%
for 240 hours |
| Life
expectancy |
a) Flat type: 5,000,000
closures or more
b) Tactile type: 1,000,000 closures or more |
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us by Skype or Msn: |
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