Silicon rubber keyboards have a similar look and feel like conventional
keyboards. They are mostly used in small-sized controls and input
units, for example cellular phones or remote controls, which are
manufactured in large quantities. The future ambient conditions
determine the design, the choice of suitable materials and the
manufacturing method. Properly embedded into the frontpanels they also
offer a high degree of protection against soiling and moisture. |
Technical Data: |
| |
|
|
| |
Electrical
Data |
|
| |
Rating |
max.
200 mA at 30 mV - 100 V |
| |
Electric
strength (voltage) |
> 1000 V /
at 50Hz ~ |
| |
Insulating
resistance |
>
10 MOhm |
| |
|
|
| |
Mechanical
Data |
|
| |
Basic
materials |
NBR,
Silicon, EPDM |
| |
Hardness,
grade (shore A) |
30
- 80, +/- 5 |
| |
Tensile
strength |
60
-70 dN/cm² |
| |
Tensile
test: elongation resistance |
265
- 300 % |
| |
Actuating
force |
1.8
N - 3 N, +/- 20% |
| |
Contact
distance |
0.7
mm |
| |
Durability |
> 106 cycles |
| |
|
|
| |
Ambient
Conditions |
|
| |
Operating
temperature
|
-40°
C to +75° C with silicon
-25° C to +75° C with NBR/EPDM |
| |
Storage
temperature |
-40°
C to +85° C |
| |
Protection
class
|
IP
65 resp. IP67 if mounted adequately |
| |
|
|
|
PRINTED
CIRCUIT BOARDS
