Current limiter used in an electrical circuit comprises a silicon substrate, an n-conducting layer, n+ layers formed on opposite surfaces of the n- conducting layer, and electrodes formed on opposite surfaces of the substrate

摘要

Current limiter comprises a silicon substrate (2), an n-conducting layer (4), two n+ layers (5) formed on opposite surfaces of the n- conducting layer, and two electrodes (3) formed on opposite surfaces of the substrate. A voltage is applied to the substrate and a constant current flows in the current limiter when the voltage is higher than the predetermined value. Preferred Features: A number of p layers are partially formed in each of the n+ layers. The current limiter can be adjusted up to 500K.