Schurter – Chip Fuses – Low Loss and Precise Protection


SCHURTER offers a broad range of high quality chip fuses, which were developed specially for low loss and precise overcurrent protection in secondary circuitry. Six different types, available in chip dimensions from 0402 to 1206, offer compact and effective protection in the event of a fault.

The SCHURTER chip fuses are available in a number of different current ratings from 50mA to 25A at a rated voltage of up to 125 VAC/VDC. Depending on the version and voltage ratings, a breaking capacity of up to 600A is reached. Thanks to these impressively high values and variety, the chip fuses can be used in a wide range of applications. The fuses are especially suitable for mobile and battery operated devices in sensor technology and industrial electronics.

SCHURTER chip fuses set themselves apart from comparable products through their extremely precise opening times and minimal power dissipation. In addition, their solid construction makes them especially resistant to vibrations and pulse loads. Furthermore, the SMD contacts, some of which are gold-plated, have a positive influence on the wettability, storage life and electrical quality of the chip fuses.

All SCHURTER chip fuses come with cURus certification. The USI 1206 is additionally VDE-approved, the only chip fuse with this type of certification available in the market. As halogen-free and RoHS conform fuses, SCHURTER chip fuses can moreover be used for lead-free soldering processes.

• Numerous current ratings from 50mA to 25A
• High rated voltages up to 125 VAC/VDC
• High breaking capacity of up to 600A (internal tests)
• Super-Quick-Acting (FF), Quick-Acting (F) and Time-Lag (T) versions
• Precise, low loss, resistant to vibrations and pulses

Part TypeDeviceSize (mm)Rated VoltageCurrent RangeBreaking CapacityCharacteristic
USFF 1206Low power dissipation, precise1.6 x 3.2125 VAC 63 VDC0.05A to 0.25A10A to 100ASuper-Quick-Acting (FF)
USF 1206Fast interruption1.6 x 3.232 - 125 VAC 63 - 125 VDC0.375A to 4A50ASuper-Quick-Acting (FF)
USI 1206IEC standard, VDC approved1.6 x 3.232 VAC 63 VDC0.5A to 6.3A63AQuick-Acting (F)
UST 1206Compact secondary protection1.6 x 3.263 VAC 63 VDC7A to 25A100A to 150ATime-Lag (T)
USF 0603Compact secondary protection0.8 x 1.632 VAC 32 - 63 VDC0.5A to 5A50ASuper-Quick-Acting (FF)
USF 0402Compact secondary protection0.55 x 1.0524 - 32 VDC0.375A to 5A35ASuper-Quick-Acting (FF)