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Bourns NX Series Thermal Cutoff (TCO) Devices

2024-03-30

Bourns NX Series Thermal Cutoff (TCO) Devices

Bourns NX Series Thermal Cutoff (TCO) Devices are high-current miniature resettable devices that employ a high-rated corrosion-resistant bimetal mechanism for improved endurance in humid environments. These devices support current capabilities from 12A to 20A at 60°C. The NX series TCO devices offer a 1.2mΩ and 3mΩ typical resistance. These devices include overcurrent and overtemperature protection for lithium polymer and prismatic cells. The NX series TCO devices are available with 77°C, 82°C, 85°C, and 90°C trip temperature options, which operate within a ±5°C tolerance. These devices are used for battery protection in handheld and wearable electronics, notebook PCs, tablet PCs, and smartphones.

FEATURES

  • Improved corrosion resistance
  • High current capacity and small body size
  • Carries 40% more current than NR series
  • Controls abnormal, excessive current virtually up to rated limits instantaneously
  • Overcurrent and overtemperature protection for lithium polymer and prismatic cells
  • RoHS-compliant and UL-recognized

SPECIFICATIONS

  • 200mA maximum leakage current @25°C
  • 1.2mΩ and 3mΩ typical resistance
  • 3V minimum holding voltage @25°C for 1 minute
  • 40°C minimum reset temperature

APPLICATIONS

  • Battery cell protection:
    • Smartphones
    • Tablet PCs
    • Notebook PCs
  • Handheld and wearable electronics

MECHANICAL DIAGRAM

Mechanical Drawing - Bourns NX Series Thermal Cutoff (TCO) Devices
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