本文件包括以下广泛信息:字母符号惯例；二极管和整流器（包括信号、整流器、微波、隧道和反向、电压调节器、参考电压、电流调节器和变容二极管）；晶体管（包括FET、JFET和IGBT）；光敏器件、光发射器和光耦合器；晶闸管和PUTs；和瞬态电压抑制器。术语和符号及其定义按产品类型的字母顺序排列。在适用的情况下，还包括图形符号。本标准旨在促进符号、缩写、术语和定义在整个半导体行业的统一使用。

This document includes extensive information on: letter symbol conventions; diodes and rectifiers (including signal, rectifier, microwave, tunnel and backward, voltage-regulator, voltage-reference, current regulator, and varactor diodes); transistors (including FETs, JFETs, and IGBTs); photosensitive devices, photoemitters, and optocouplers; thyristors and PUTs; and transient voltage suppressors. Terms and symbols, with their definitions, are arranged alphabetically by product type. Where applicable, graphical symbols are also included. The purpose of this standard is to promote the uniform use of symbols, abbreviations, terms, and definitions throughout the semiconductor industry.