Metal Hybrid Protection (MHP)

Reliable Overtemperature Protection

Our MHP-TA (Metal Hybrid PPTC Thermal Activation) device offers reliable overtemperature protection that can meet the needs of low-profile and high capacity lithium polymer battery packs.

Protecting battery packs, while keeping a low profile. Our MHP-TA device offers a 9VDC rating and a higher current rating than typical battery strap devices. Most ultra-thin computing products use lightweight and high capacity lithium polymer (LiP) and prismatic cells that also exhibit higher voltages and battery discharge rates. The MHP-TA's compact size (5.8mm x 3.85mm x 1.15mm) and multiple activation temperature ratings ranging from 72 to 90 degrees celsius, help give our device a sizable advantage in helping meet safety requirements required of LiP and prismatic cells.

TCO

Features Thermal Cut-Off (TCO) protection

15A

Up to 15A current rating protection

1.15

1.15 mm low profile design

Comparison

Bimetal and PPTC

  Advantages Disadvantages
Bimetal Low resistance, High Operting Current, Good Temperaturing Sensing Non-Latching, Mechanical Contact
PPTC Latches, No Mechanical Contact Thermal Derating Size for Operating Current

Li-ion Protection (English)

TE’s Barry Brents explains how PolySwitch and MHP devices help protect Li-ion cell and battery packs.

Features

Compact Design, Current Capacity

  • 9VDC rating
  • Two levels of current carrying capacity:

      - Low current (nominal 6A hold current @25°C)

      - High current (nominal 15A hold current @25°C)

  • Multiple activation temperature ratings (72°C, 77°C, 82°C, 85°C, 90°C)
  • Compact size (L: 5.8mm x W: 3.85mm x H: 1.15mm) allows for ultra-thin battery pack designs

Benefits

Resettable Protection

  • Capable of handling the higher voltages and battery discharge rates found in high-capacity lithium polymer and prismatic cell applications
  • Helps provide resettable overtemperature protection in high-capacity LiP and prismatic cell applications

Applications

Batteries in Mobile Electronics

  • Tablets
  • Ultra-thin notebooks PCs
  • Smart phones
  • E-readers
The MHP-TA device’s thermal activation and other advanced features help provide a costeffective, space-saving method of overtemperature protection in today’s thinnest consumer electronics devices.
MHP-TA Resettable Device,
Application Note