Conductive Rubber Keypads by KEYTEC

 

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GENERAL SPECIFICATIONS:

   ELECTRICAL CHARACTERISTICS

contact resistance

insulation resistance

max. contact loading

 <200 ohm at 12V DC 30m A

>100 Mohm at 250V DC

24V DC 100mA

DIELECTRIC CHARACTERISTICS

strength

constant

dissipation

volume resistancy

 15-17(kv/mm)

2.6-3.5(MHz)

14. x 10e3 - 2.8 x 10e3 (MHz)

6x10e14 - 1x10e16 (ohm-cm)

   PHYSICAL PROPERTIES

PARAMETER

CONDUCTOR

INSULATOR

specific gravity at 25 degree C

durometer hardness

tensile strength (kg/cme2)

elongation (%) at break

tear strength (kg/cme2)

compression (%) after
22hrs at 175 degree C

1.18 

85 +/- 5 

60

 >100 

9  

<30

 1.11 - 1.18 

40 - 80 +/- 5 

70  

>100 

12 

<35

   DIMENSIONAL TOLERANCE

Part Dimensions High Precision Manufacture Precision Manufacture Standard Manufacture
0-6 mm +/- 0.1 mm +/- 0.2 mm +/- 0.3 mm
6-18 mm +/- 0.1 mm +/- 0.3 mm +/- 0.4 mm
18-50 mm +/- 0.15 mm +/- 0.4 mm +/- 0.6 mm
50-180 mm +/- 0.3 mm +/- 0.8 mm +/- 1.2 mm

   CHEMICAL RESISTANCE PROPERTIES

Chemicals

Weight change %

Volume change %

Hardness change %

conc. nitric acid

+ 10

+ 10

 -30

7% nitric acid

 <1

 <1

-2

conc. sulphuric acid

 resolvent

 resolvent

 resolvent

10% sulphuric acid

 <1

 <1

-2

glacil acetic acid

+2

+3

-4

5% acetic acid

+4

+4

+8

conc. hydrochloric acid

+1

+1

-6

10% hydrochloric acid

 +2

+4

-4

3% hydrochloric acid

<1

+1

-2

20% hydration sodium

<1

<1

-2

1% hydration sodium

<1

<1

-4

conc. liquid ammonia

 +2

 +2

-4

10% liquid ammonia

 +3

 +2

 -6

ethyl alcohol

 +5

+6

-10

acetone

+5

+15

-15

toluene

+75

+120

-30

tetrachloride carbon

+130

+110

-25

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