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A revised and significantly expanded reference for technical writers and educators, manufacturers, buyers and users of discrete semiconductor and optoelectronic devices, is now available. Revision C of JEDEC Standard No. 77 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.