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EPCOS / TDK Self-Protecting PTC Thermistors

EPCOS / TDK Self-Protecting PTC Thermistors are suitable for smoothing capacitors in power supplies in the event of a short circuit. These self-protecting PTC thermistors are ideal for high pulse currents and a high number of operating cycles. Inrush current limiters are not damaged when directly connected to Vmax, even without additional current limitation. Applications for EPCOS / TDK Self-Protecting PTC Thermistors include inrush current limiters (charging resistors) for smoothing and DC link capacitors and for the replacement of high-power fixed resistors for capacitor charging.

Features

  • Self-protecting in case of malfunction of short-circuit relay or internal short circuit of capacitor
  • For high pulse currents and a high number of operating cycles
  • Inrush current limiters are not damaged when directly connected to Vmax, even without additional current limitation

Applications

  • Inrush current limiter (charging resistor) for smoothing and DC link capacitors
  • Replacement of high-power fixed resistors for capacitor charging

Additional Resources

Published: 2017-09-01 | Updated: 2023-07-20