High-current SMD fuse to cut batteries from power systems in safety-critical situations offered by SCHURTER

Nov. 3, 2022
Designed for safety extra low voltage (SELV) applications, the UHP meets high-breaking requirements and fast trip time of an overcurrent situation.

SANTA ROSA, Calif. – SCHURTER Inc. in Santa Rosa, Calif., is introducing the fast-acting UHP high-current SMD fuse to interrupt high-energy overcurrent safely in batteries for automotive, data center equipment, telecommunications equipment, and power tools.

Specially designed for safety extra low voltage (SELV) applications, the UHP meets the high-breaking capacity requirements and fast trip time of an overcurrent situation by separating these immense energies galvanically.

Today, lithium-ion batteries are the most prolific battery technology in numerous industries, and their areas of application continue to grow exponentially. Modern smart phones and EV cars, for example, rely heavily on lithium-ion batteries for their fast charging capabilities, energy storage, and extended battery life.

Related: Battery protectors to prevent critical lithium-ion batteries from overcharging introduced by Littlefuse

In the event of a short circuit in the battery system, high amounts of stored energy can be released quickly. Such a short circuit event poses damage to the system and could result in a fire; the fuse serves as the primary protection against such unsafe conditions and must address the high current on the circuit board, where more power must be converted and dissipated.

SCHURTER's UHP fuse disconnects the circuit at twice the rated current within a maximum of 15 seconds. The rated breaking capacity of the UHP is as much as 3000 amps of power, depending on the configuration.

The UHP allows for reflow solder process compatibility and space savings on the circuit board. It operates in temperatures from -55 to 125 degrees Celsius.

Related: Pulse-proof ceramic fuse with time-lag tripping for demanding fail-safe applications introduced by Schurter

The UHP is available in six current ratings from 50 to 100 amps at 80 volts DC or 63 volts DC, depending on the required breaking capacity of 3000 or 2000 amps.

It is cURus approved and meets the high-reliability requirements of AEC Q200. It is RoHS compliant, halogen-free, and bears the CE, UKCA, and REACH markings. Pricing for the UHP fuse starts at $0.35 each at 500 pieces.

For more information contact SCHURTER online at www.schurter.com.

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