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Silicone Rubber Keypads - The economic option for your applications

The silicone rubber keypads contacts are relatively economic and reliable option when compare to membrane switches or other material, because it's made of high elastic, nontoxic silicone rubber compounds that can be massive produced by compression or injection modeling. The ease-shaped silicone rubber keypads provide great convenience for integrating with the printed circuit boards (PCB) in any form. Moreover, the sensitivity and the tactile feedback can be adjusted to satisfy the operator's need. Due to its excellent characteristics, the silicone rubber switch is utilized in various industries to satisfy cost, reliability, and ergonomic/ cosmetic styling needs.

As an experience assembling company, Elcom knows every pros and cons about customized silicoen subber keypads. We offer great variety of customized design options and enhancements for all kinds of electrometric applications as listed bellow. If there's other customized needs or any questions about rubber silicone keypads, please send your quiries to us, we will be glad to help.

Slicone Rubber Design Options

Keypad Conductive Options

  • Carbon conudctive pill

  • Polyester conudctive pill

  • Silver conudctive ill

  • Half-switch desing

Appearance and surface markings

  • Screen-printed graphics

  • Laser-etched graphics

  • Epoxy enhancement

Chemical and wear resistant coatings

  • IP65 Waterproof

  • Abrasion resistance

  • Chemical resistance

  • UV resistance


  • Gasket configuration

  • LED back-lighted

  • PFC tailed silicone rubber keypads

Silicone Rubber Keypads
Silicone Rubber Keypads
Silicone Rubber Keypads 02

Silicone Rubber Keypad Basic Constructs

Silicone Rubber Keypad Basic Constructs

Silicone Rubber Keypad Basic Constructs 02


Specification of Silicone Rubber Keypad

Contact resistance <200 ohms="" td="">
Actuation force 100 +/- 25 grams typical
Life cycle 1,000,000 typical
Contact bounce 10msec. max
Pretravel 0.20mm typical
Operation temperature -40 °C to +150 °C
Storage temperature -50 °C to +150 °C
Travel 0.8mm to 120mm typical
Material hardness 50+/- 5shore A typical

Electrical Specification of Silicone Rubber Keypad

Insulation Resistance less than 100 M-ohm at 250V DC
Contact Resistance Conductive pills less than 200 ohms
Metal pills greater than 0.01 ohms
Maximum Contact Loading 100mA , 24V DC
Contact Material ±0.05mm
Outline Tolerance Carbon impregnated silicone rubber Gold 
plated metal pill

Typical Key Structure of Silicone Rubber Keypad:

1)Key Travel 0.25 ~5.0mm.
2)Actuation Force 20 ~ 350 grams
3)Operating Life 1 million (typical), 10 millions (special)
4)Operating Temperature -30°C/font>C ~ 150°C/font>C
5)Storage Temperature -42°C/font>C ~ 175°C/font>C
6)Printing Range Slope +/- 0.5 mm

Dimension Tolerance of Silicone Rubber Keypad

6.50mm or Less +/- 0.15mm
6.50mm - 10.0mm or Less +/- 0.20mm
10.0mm - 16.0mm or Less +/- 0.20mm
16.0mm - 25.0mm or Less +/- 0.25mm
25.0mm - 40.0mm or Less +/- 0.35mm
40.0mm - 63.0mm or Less +/- 0.40mm
63.0mm - 100.0mm or Less +/- 0.55mm
100.0mm - 160.0mm or Less +/- 0.70mm
160.0mm and up +/- 0.5%

Actuation Force Tolerance of Silicone Rubber Keypad

50 grams +/- 15 grams
75 grams +/- 20 grams
100 grams +/- 25 grams
125 grams +/- 30 grams
150 grams +/- 35 grams
140 grams +/- 40 grams
> 200grams +/- 30 %