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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

Additional Resource

View Results ( 8 ) Page
N.º de artículo Hoja de datos Voltaje mínimo de retención Resistencia Corriente máxima de corte Corriente máxima de pérdida Voltaje máximo Temperatura nominal Restablecer la temperatura
NX77ABB NX77ABB Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 77 C + 40 C
NX82ABB NX82ABB Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 82 C + 40 C
NX85ABB NX85ABB Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 85 C + 40 C
NX90ABB NX90ABB Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 90 C + 40 C
NX77A1B NX77A1B Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 77 C + 40 C
NX82A1B NX82A1B Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 82 C + 40 C
NX85A1B NX85A1B Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 85 C + 40 C
NX90A1B NX90A1B Hoja de datos 3 V 1.2 mOhms 70 A 200 mA 28 VDC / 35 A, 100 cycles + 90 C + 40 C
Publicado: 2024-03-11 | Actualizado: 2024-05-30