Breaker Handles High Current In Small Package

Littelfuse introduces the MHP-TAT18 as a metal-hybrid PPTC battery mini-breaker with resettable thermal cut-off (TCO). An over-temperature protection device, it specifies a 9-Vdc rating and, allegedly, a higher current rating than similar products on the market. The device 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, PPTC acts as a heater and helps keep the bimetal latched until the fault is removed.

 

Typical applications include:

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  • Gaming PCs
  • Notebook PCs
  • Ultra-books
  • Tablets
  • Other battery-powered portable devices  

Benefits include:

  • 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°C, 77°C, 82°C, 85°C, 90°C) help to provide resettable and accurate over-temperature protection.
  • Thin, compact form factor (5.8mm x 3.80mm x 1.05mm) facilitates circuit protection in ultra-thin battery pack designs.  

For more details, visit the MHP-TAT Metal Hybrid PPTC Mini-Breaker Series product page and snag a datasheet as well.

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