TE Circuit Protection, a pioneer of Polymeric Positive Temperature Coefficient (PTC) Resettable devices, has developed PolySwitch Overcurrent and Overvoltage Protection Devices to help protect power electronics circuits in automotive systems such as Electronic Control Unit (ECU), Heating Ventilation and Cooling (HVAC), Liquid Crystal Display (LCD) displays, motor circuit protection, etc.

Resettable Overcurrent and Overvoltage Protection Devices for AutomotivesTE Circuit Protection developed automotive specific versions of PolySwitch PPTC devices (nanoASMDC, microASMD, miniASMDC, AHS, ASMD, AHRF, AHEF, AGRF and BD). These products are qualified and sold under PS400 specification which is derived from AECQ200, the standard for electronic components used in the automotive industry. The key difference between these product families and other protection devices in their circuit protection product portfolio is the qualification process followed according to a series of rigorous tests related to the automotive environment. As a result, they are characterized by specific additional values determined post automotive related testing.

Applications of PolySwitch Resettable Overcurrent and Overvoltage Protection Devices

  • Motor and motor circuit protection including power door-locks, mirrors, lumbar pumps, seats, sunroofs and windows
  • Electronic Control Unit (ECU) I/O protection
  • Heating Ventilation and Cooling (HVAC) motor and I/O protection
  • Telematics, infotainment and navigations systems
  • Liquid Crystal Display (LCD) back-light heaters
  • Power and cigarette lighter outlets, plugs and adapter/chargers
  • Powered networks and busses
  • Air-flow detection and overcurrent protection in HVAC and cooling fan systems
  • Stall detection in express window and sunroof circuits
  • Power distribution, electrical centers and junction box resettable overcurrent protection
  • Wire downsizing
  • Motor Electromagnetic Interference (EMI) suppression
  • Electrostatic Discharge (ESD) damage protection
  • Load dump and other transient voltage protection