TD and Chip Resettable PTCs

The TD (Terminal Devices) and Chip PolySwitch devices are designed for use in small and medium automotive motor applications, like power windows, door lock motors, and lumbar pump motors. These devices help eliminate problems caused by abnormal function or misuse, such as a motor stall or short circuit. The TD and Chip devices are normally custom made to fit into the motor housing. By mounting them close to the motor windings, they will trip more quickly when the motor windings are hot and therefore closer to being damaged, and more slowly when the motor windings are cold.


  • 固态,没有活动部件,没有开关循环under fault conditions
  • 抗冲击和抗振动
  • Custom designs enable flexibility in form factor and performance
  • Available in voltage ratings from 16 to 30 VDC (high voltage capability up to 60 VDC in some form factors)
  • Available in a resistance range of 10 to 100 milliohms

  • Resettability helps reduce warranty costs
  • 可扩展技术允许更大的设计灵活性
  • Smaller motor temperature increase compared to circuit breakers in stall condition
  • Reduced electromagnetic interference
  • 消除移动触点产生的电弧
  • Window lift motors
  • Door lock actuators
  • Trunk actuators
  • 燃油门执行器
  • 腰部支撑电机
  • 座椅电机
  • Sunroof motors
  • Convertible top actuators
  • 电线保护