Fast-acting thin film chip fuse

Vishay Intertechnology has introduced the Beyschlag MFU 0603 AT, a very fast-acting thin film chip fuse for automotive applications. AEC-Q200 qualified it features current ratings from 0.5 A to 5.0 A.

The device is intended for use in electric (EV) and hybrid electric (HEV) vehicles, where it will provide protection for voltage sensing circuits in battery management systems, in addition to circuit protection for small loads. For these applications, the fuse's highly controlled thin film manufacturing process guarantees the stability of fusing characteristics.

The MFU 0603 AT has been designed to be robust and consists of a homogeneous metal alloy film deposited on a high grade ceramic substrate, with fuse elements covered by a protective coating designed for electrical, mechanical, and climatic protection.

The device offers advanced sulfur resistance in accordance with ASTM B 809, and it withstands 85°C /85% R.H. for 1000 h biased humidity testing and testing for thermal shock.

Offered in the 0603 case size, the fuse features a rated voltage of up to 63 V, breakdown capacity of 50 A, and operating temperature range of -55 °C to +125 °C. RoHS-compliant and halogen-free the fuse is suitable for processing on automatic SMD assembly systems and automatic soldering using wave, reflow, or vapor phase.