Vishay – Miniature radial-leaded PTC thermistors offer accurate over-temperature sensing


Vishay Intertechnology offers a series of miniature radial-leaded Positive Temperature Coefficient (PTC) thermistors which perform accurate, remote over-temperature sensing in energy-generation, industrial and consumer applications.

The PTCSL03 thermistors have a compact design, featuring a body diameter of just 4mm and copper-clad steel wire leads. Users may specify the devices with a nominal working temperature of 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C or 150°C.

The robust devices can withstand prolonged over-temperature operation, showing a temperature variance of just ≤1°C after 1,000 hours at 15°C above the nominal working temperature, which is the device’s maximum rated temperature.

The body of the PTCSL03 thermistors is made of a medium-resistivity doped barium titanate ceramic chip with a high-temperature silicone coating. They are also available as bare pellets on request.


  • Industrial equipment
  • Motor drives
  • Lighting drivers
  • Power supplies and converters
  • Smart fuse boxes


  • 30V maximum voltage
  • 5mW/K dissipation factor
  • 6s thermal time constant
  • Accurate resistance for ease of circuit design