BOURNS Thermal Cut Off Fuse, 28V DC, 77°C - 25A

The BOURNS Thermal Cut Off Fuse provides critical, high-speed protection for sensitive electronic circuits and battery packs. Designed as a miniature thermal cutoff device (TCO), it offers instantaneous response to abnormal and excessive current up to its specified rating limits, safeguarding components from potential damage caused by overcurrent and overtemperature events.

This component is engineered specifically for overtemperature and overcurrent protection in modern lithium polymer and prismatic cell applications, making it an essential safety device for battery management systems and power supplies. Its rapid reaction time helps prevent thermal runaway, a common cause of failure in high-energy-density batteries, thereby enhancing the overall reliability and safety of your electronic designs.

The fuse features a low-profile surface-mount design, facilitating easy integration onto PCBs where space is at a premium. It boasts a precise functioning temperature of 77°C, at which point it will interrupt the circuit. Once activated, it will reset only when the temperature drops to a minimum of 40°C, ensuring the fault condition has fully cleared before allowing the system to resume operation.

Constructed to meet exacting standards, this thermal fuse is part of the SC product range and is characterised by its compact dimensions and SMD (Surface Mount Device) terminals, which are compatible with automated assembly processes. Its robust design and reliable performance make it a trusted choice for engineers seeking dependable circuit protection in a wide array of consumer electronics, industrial controls, and telecommunications equipment.

Variant Details

• Size: 25A