| 摘要 |
PURPOSE:To obtain an element suitable for output control or the like for a sound signal amplifier by a method wherein a collector and an emitter are fractionized into several pieces and alternately formed and these collectors and emitters are electrically connected to form common electrodes at each collector or emitter. CONSTITUTION:An N<+> buried layer 32 is provided on a P type semiconductor substrate 30 to form an N type epitaxial layer 34 and the layer 34 is partitioned and isolated by an isolating region 36. A plurality of P type diffusion regions 38 partitioned in rectangular shape are formed at equal intervals on the surface section of the layer 34. And a rectangular N type diffusion region 40 with fixed width and length is formed and the regions 38 are arranged with the same shape in the form of m rows and n columns. These P type regions are divided to alternately form collectors C and emitters E and a common collector electrode 42c1 and a common emitter electrode 42E are formed. Meanwhile, the N type diffusion region is set at a base B and a base electrode 42B is formed at the base B. |
