BS 3363:1980 BRITISH STANDARD IEC 148:1969 CONFIRMED JANUARY 1988 Specification for Letter symbols for semiconductor devices and integrated microcircuits UDC 621.3.049.77 777 + 621.382 777 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW BS 3363:1980 Cooperating organizations The Electronic Components Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: BritishElectrical andAllied Manufacturers'Association (BEAMA) Electronic Components Industry Federation* Electronic Engineering Association* Electricity Supply Industry in England and Wales Institution of Electronic and Radio Engineers Ministry of Defence* National Supervising Inspectorate* Post Office* Society of British Aerospace Companies Limited Telecommunications Engineering and Manufacturing Association (TEMA)* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: British Broadcasting Corporation Engineering Equipment Users' Association This British Standard, having heffieldun been prepared under the direction of the Electronic Components Standards Committee, was published under the authority of the Executive Board and sh comes into effect on opy: 28 November 1980 8 CBSI 11-1999 Amendments issued since publication First published April 1961 Licensed First revision February 1968 Date of issue Amd. No. Comments Second revision November 1980 The following BSI references relate to the work on this standard: Committee reference ECL/12 Draft for comment 80/21285 DC ISBN0580117065 BS 3363:1980 Contents Page Cooperating organizations Inside front cover National foreword ii Chapter I. General Scope 1 1 2 Definitions of terms used in this Recommendation 1 3 General recommendations for letter symbols 1 4 Letter symbols for currents, voltages and powers 1 5 Letter symbols for electrical parameters 4 5 6 Letter symbols for other quantities Chapter II. Letter symbols for bipolar transistors 6 1 Letter symbols for currents, voltages and powers 2 7 Letter symbols for electrical parameters 3 List of letter symbols 7 Chapter III. Letter symbols for low-power signal diodes Letter symbols for currents, voltages and powers 16 1 2 Letter symbols for electrical parameters 16 List of letter symbols 16 3 Chapter IV. Letter symbols for voltage reference and voltage regulator diodes Under consideration Chapter V. Letter symbols for tunnel diodes 18 Letter symbols for currents, voltages and powers 2 Letter symbols for electrical parameters 18 18 3 List of letter symbols Chapter VI. Letter symbols for variable capacitance diodes Under consideration Chapter VII. Letter symbols for rectifier diodes 20 1 Letter symbols for currents, voltages and powers 2 Letter symbols for electrical parameters 20 20 3 List of letter symbols Chapter VIII. Letter symbols for thyristors Letter symbols for currents, voltages and powers 23 1 2 23 Letter symbols for electrical parameters List of letter symbols 24 3 Chapter IX. Letter symbols for field-effect transistors 1 Letter symbols for currents, voltages and powers 26 2 Letter symbols for electrical parameters (under consideration) 26 26 3 List of letter symbols (under consideration) Chapter X. Letter symbols for digital integrated microcircuits Under consideration Chapter XI. Letter symbols for analog integrated microcircuits Under consideration Publications referred to Inside back cover CBSI 11-1999 1