POWER-TECH
KEYBOARD SWTICH CO., LTD.
Product Line
Rubber Keyboard
Rubber Keyboard

Silicone Rubber Keyboard & Component Parts

Description

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.
Specification
☆PHYSICAL PROPERTIES:
Parameter
Conductor(Contact)
Insulator(Elastomer)
Specific Gravity at 25oC 　1.18 　1.11-1.18
Hardness(Shore A) 　655 　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

☆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 1410-3 ~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
Actuation Force
Tolerance Feel
Tactile Feet
Life
　 50 grams 　15-20 　Excellent 　　　lkk
　 70 grams 　20-25 　Excellent 　　　lkk
　 90 grams 　20-30 　Excellent 　　　lkk
　100 grams 　25-35 　Excellent 　　　lkk
　120 grams 　25-35 　Good 　　　lkk
　150 grams 　30-40 　Fair 　　　lkk
　170 grams 　35-40 　Poor 　　 450k
　200 grams 　50 　None 　　 50K Type
　　 (IOOkMax)
All effects are estimated according to typical key structures.

☆TOLERANCE:
1.
 Dimensional Tolerance
Under 30mm 0.10mm
30mm-
 50mm 0.20mm
50mm-
 100mm 0.30mm
100mm-
 150mm 0.40mm
150mm-
 200mm 0.50mm
Over 200mm 0.80mm
2.
 Typical tolerance to actuation force is 25 grams.
3.
 Material hardness tolerance is 5 degree shoreA.
4.
 Tolerance of conductive pill thickness is 0.10mm
5.
 High precision Manufacturing is possible at higher cost.

☆FORCE VS TRAVEL/TACTILE FEEDBACK :
Fa:Overall travel force.
Fb:Actuating force.
Fc:Snap-effect
S1:actuating distance
S2:Travel distance
S3:Overtravel distance
Loading...
Contact Us