| POWER-TECH KEYBOARD SWTICH CO., LTD. |
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Item Number:
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SILICONE RUBBER KEYBOARD & COMPONENT PARTS |
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Description:
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SILICONE TUBING/WIRING, RUBBER ROLLER, INTER-CONNECTOR LG/LS/
L-TYPES, SWIMMING & DIVING ACCESSORIES, O-RINGS, FDA REGULATION
GRADE NIPPLES AND STOPPER FOR CHILD-CARE AND MEDICAL USE,
ANODE ANODE CAPS ACCESSORIES FOR FLY-BACK TRANSFORMERS. |
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Specification:
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☆PHYSICAL PROPERTIES:
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Parameter
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Conductor(Contact)
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Insulator(Elastomer)
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| Specific Gravity at 25oC |
1.18 |
1.11-1.18 |
| Hardness(Shore A) |
65 5 |
40-805 |
| Tensile Strength(kg/cm2) |
60 |
70 |
| Elongation(%) at Break |
>100 |
>100 |
| Tear Strength(kg/cm2) |
9 |
12 |
| Compression(%)After |
>30 |
>35 |
| 22 Hours at 175@oC |
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☆ELECTRICAL CHARACTERISTICS:
| Contact Resistances |
<200 OHM AT 12V, DC 300mA |
| Insulation Resistance |
>1000HMat250VDC |
| Max. Contact Loading |
24V DC, 100mA |
| Contact Material |
Carbon impregnated silicon |
☆DIELECTRIC CHARACTERISTICS:
| Strength |
15-17(kv/mm) |
| Constant |
2.6-3.5(MHz) |
| Dissipation |
14 10-3
~2.8103(MHz) |
| Volume Resistance |
61014~11016(ohm~cm) |
☆CHEMICAL RESISTANCE:
Silicon rubber keypads can safety be exposed to the following materials.
| Solvents |
Acids |
| Acetone |
5% Hydrochloric acid |
| Alcohol |
5%Nitric acid |
| Mineral spirits |
5% Phosphoric acid
10% Sulfuric acid |
Consult us for specific chemicals which concern your application.
☆ACTUATION FORCE/FEEL/LIFE:
Typical Effects
All effects are estimated according to typical key structures.
☆TOLERANCE:
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1.
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Dimensional Tolerance |
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| Under |
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30mm |
0.10mm |
30mm-
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50mm |
0.20mm |
50mm-
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100mm |
0.30mm |
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100mm-
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150mm |
0.40mm |
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150mm-
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200mm |
0.50mm |
| Over |
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200mm |
0.80mm |
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2.
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Typical tolerance to actuation force is 25 grams. |
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3.
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Material hardness tolerance is 5
degree shoreA. |
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4.
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Tolerance of conductive pill thickness is 0.10mm |
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5.
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High precision Manufacturing is possible at higher cost. |
☆FORCE VS TRAVEL/TACTILE FEEDBACK :
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Fa:Overall travel force.
Fb:Actuating force.
Fc:Snap-effect
S1:actuating distance
S2:Travel distance
S3:Overtravel distance |
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Send Message  (Your message will be sent directly) |
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