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   Silicone rubber keypad Engineering Guide ¡@ ¡@


  >Silicone rubber keypad

  >Custom Keyboard and Input Device

  >In-Mold Decoration (IMD) Parts

  >Housing and Parts

     >Magnesium Alloy
 
     >Co-molding

     >Plastic

  >Passive Components and Fasteners

    
  >Silicone Rubber Keypad:
    Can be integrated with switch panels including    
    graphic overlays, shielding, EL panels, and back 
    plates...etc
  >Quick Turnaround Prototype: 
    Generally 2-3 weeks.
    Rapid production Tooling:
    Generally 4-6 weeks.
  >Keypad illustration
   >What Samwell can offer?

    General specifications:
   1)Contact resistance: <200 Ohms
   2)Actuation force: 100 +/- 25 grams typical
   3)Life cycle: 1,000,000 typical
   4)Contact bounce: 10msec. max
   5)Pretravel: 0.20mm typical
   6)Operation temperature: -40 ¢X C to +150 ¢XC
   7)Storage temperature: -50 ¢XC to +150 ¢XC
   8)Travel: 0.8mm to 120mm typical
   9)Material hardness: 50?+/- 5?shore A typical

    Electrical characteristics: 
   
    Contact Resistance           Conductive pills < 200 Ohms
         Metal pills >= 0.01 Ohms 
    Insulation Resistance           > 100 M-ohm at 250V DC 
    Max. Contact Loading           24V DC, 100mA 
    Contact Material          Carbon impregnated silicone
         rubber Gold plated metal pill 



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