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Keypad Technical_Electrical

Conductive Carbon Pills

  • Sizes available, 0.2mm to 10.0mm dia. in 0.5mm increments
  • Conductive pill resistance: less than 150 ohms with 100 gram loading
  • Life expectancy: 30 millon operations

Selective Carbon Printing

  • Size and layout customised to key shape
  • Conductive pill resistance: less than 800 ohms with 300 gram loading
  • Life expectancy: 1 million operations

Maximum Contact Pill Size

Keypad electrical: Contact pill size
  • d = D-1.5~2.0mm

Recommended PCB Electrode Patterns

  • Layout available as AutoCAD dwg file (contact office for further details)
  • Suggested PCB coating - gold, selective carbon
Keypad electrical: PCB electrode patterns



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