BIPOLAR TRANSISTOR HAVING A WAVE STRUCTURE

摘要

PURPOSE: A bipolar transistor is provided to enhance an electric current capability of the emitter and collector by forming a first conductive-type collector region, a second conductive-type base region, and a first conductive-type emitter region. CONSTITUTION: A first conductive-type collector region is provided. A second conductive -type base region is formed on the collector region. A first conductive-type emitter region of which plain locus forms a curve is formed on the base region. An emitter electrode which is connected to the emitter region is further formed on the emitter region. The emitter electrode has a locus of a curve-type parallel with the emitter region, to thereby increase a peripheral length while maintaining the area of the emitter to achieve the cost reduction.