Polymer technology

Direct connection to the circuit board is mostly achieved by creating contact areas covered with galvanic materials at a high cost. This technology is a valuable alternative to establish direct contact with the circuit board by using carbon pastes.

Polymer pastes containing carbon are applied to the circuit board by screen printing for the following applications :

  • Contact pads for keyboards
  • Printed resistors
  • Potentiometers
  • Sliding and rotary switches

For all applications, the advantages are :

  • Stable conductance values
  • Excellent adhesion on copper and laminate
  • High abrasion resistance
  • Mechanical stability : 1 million cycles
  • High resistance to corrosion, moisture and heat
  • Wide range of resistance values : Ohm to Mohm range
  • Possibility of laser trimming to reduce tolerances to < 5%
  • Resilience to HAL, solder bath, mechanical vibrations,…