FUSIBLE RESISTOR

摘要

A cermet resistive film is deposited on an alumina substrate to form a fixed resistance between a pair of spaced termination points. A portion of the resistive film is removed to form a pair of resistor sections separated by an insulating gap. A fusible link which includes a layer of cadmium material is deposited in the gap to provide electrical continuity between resistor sections and the resistor body is then covered with a protective coating. When a maximum temperature is reached due to an overload current, the fusible material melts and opens circuit.