SMD Solid-state Fuse With 1000A Breaking Capacity At 125 Vac/Vdc


A new high current SMD fuse from SCHURTER is especially suited for harsh applications, where the reliable interrupt of high currents is critical. The HCF fuse offers robust and space saving performance in ATEX- and offshore oil and gas applications, equipment operated in sub-arctic regions, aviation electronics, and certain medical technology.

The HCF has a high breaking capacity of up to 1000 A at 125 VAC resp. 125 VDC with fast response. It covers a rated current range from 5 A to 15 A.

The temperature from -50 °C to 125 °C, as well as a vibration resistance – tested up to 1600g – make the HCF ideal for the most demanding high-performance applications under the most adverse conditions.

The new fuse eliminates the intensive screening of each individual fuse, which is essential requirement for space applications. This leads to a substantial reduction in the cost per fuse.


In contrast to conventional fuses with a melting wire, the HCF has a metallic thin film layer.

“With this manufacturing technique, a metal layer is applied in conjunction with a so-called sputter. The two form on a glass substrate in an exact micrometer thickness. The resulting fuse element is enclosed with a ceramic housing, that guarantees the necessary stability and interrupt capacity. No harmful substances escape in solid or gaseous form during cutoff of the fuse”, stated the firm.

This technology also makes the fuse completely impermeable to potting compound, which can be used to achieve a hermetic seal e.g. for use in intrinsically safe applications according to ATEX and IECEx requirements.

For further details, view the full Press release.




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