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Littelfuse Metal Hybrid PPTC Mini-Breaker With Resettable Thermal Cutoff Handles Higher Currents in a Smaller Package

22 January 2018

Littelfuse, Inc. has introduced the MHP-TAT18 Metal Hybrid PPTC Battery Mini-Breaker with resettable tSource: Littelfuse, Inc.Source: Littelfuse, Inc.hermal cutoff (TCO). This over-temperature protection device offers a 9VDC rating and a higher current rating than similar products on the market. The mini-breaker helps circuit designers meet the battery safety requirements of the higher-capacity lithium-ion polymer and prismatic battery cells found in the latest portable, battery-powered consumer products. MHP technology connects a bimetal protector in parallel with a polymeric positive temperature coefficient (PPTC) device, which acts as a heater and helps keep the bimetal latched until the fault is removed.

Typical applications for the MHP-TAT18 Battery Mini-Breaker Series with resettable TCO include battery cell protection for high-capacity lithium-ion polymer and prismatic cells used in:

  • Gaming PCs
  • Notebook PCs
  • Ultrabooks
  • Tablets
  • Other battery-powered portable devices

The MHP-TAT-18 Metal Hybrid PPTC Mini-Breaker Series with resettable TCO offers these key benefits:

  • High current capacity and low resistance capable of handling the voltages and battery charge rates found in high-capacity lithium-ion polymer and prismatic cells.
  • Multiple activation temperature ratings (72 degrees Celsius, 77 degrees Celsius, 82 degrees Celsius, 85 degrees Celsius, 90 degrees Celsius) help to provide resettable and accurate over-temperature protection.
  • Thin, compact form factor (5.8 by 3.80 by 1.05 millimeters) facilitates circuit protection in ultra-thin battery pack designs.


The MHP-TAT Metal Hybrid PPTC Mini-Breaker Series is available in minimum order quantities of 20,000 pieces in boxes. Sample requests may be placed through authorized Littelfuse distributors worldwide.

To contact the author of this article, email [email protected]

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