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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.

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