Power Electronics

Chip Fuse Is IEC-compliant

Schurter's series USI 1206 is an IEC quick-acting (F) chip fuse Universal Modular Fuse (UMF). It is approved according to IEC 60127-4/2, and bears international approvals by cURus, METI and CCC.

The new fuse series has high-melting I2t values, which provides greater robustness against high inrush or pulse currents. Its opening time compares to 1206 time-delay types according to UL in lower overcurrent conditions. Conversely, the fuse responds very quickly to higher overcurrents in the event of a fault condition. Current ratings range from 0.5 A to 6.3 A with voltage ratings of 63 Vdc and 32 Vac. The device has a breaking capacity of 63 A at rated voltages and an operating temperature range of -55°C to +90°C.

The USI provides optimal secondary overcurrent protection in power inverters and low-voltage power supplies in a 3.2 mm x 1.6 mm x 0.6 mm 1206 package. The thin film technology process used to produce the fuse yields very predictable and stable performance, as each fuse passes through the testing procedure in order to qualify for use in the sensitive electronic systems. It is supplied on tape either with 1-k, 5-k or 15-k pieces.

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