Overtemperature Protectors

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Bourns offers world-class technology and applications expertise that is the result of many years of circuit protection engineering, design and support. Power electronics cover different disciplines ranging from magnetics design, EMI filter design, analog electronics, power semiconductors, circuit protection, and now recently digital signal processing. The objective of a power electronics circuit is to modify energy in the form of voltage and current at different frequencies, or, in other words, to modify the input voltage and current conditions. There are several different kinds of circuit protection technologies at Bourns:

-Multifuse® PPTC Resettable Fuses

-Mini-Breakers (Miniature Thermal Cutoff (TCO) Devices)


  • Radial leaded devices
  • Cured, flame retardant epoxy polymer
  • High current capacity, low impedance
  • Overtemperature and overcurrent protection for lithium polymer and prismatic cells
  • Wide range of temperature options
  • Resettable circuit protection


  • Notebook PCs
  • Tablet PCs
  • Smart phones
  • Food blenders, coffee machines
  • HVAC
  • Electric fans, blowers
  • AC adaptors