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:

FREE SENSORS NEWSLETTER

Like this story? Subscribe to Sensors Online!

Sensors delivers a suite of newsletters, each serving as an information resource to help engineers and engineering professionals make efficient design and business decisions. Sign up to get news and updates delivered to your inbox and read on the go.
  • 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.