IEEE Std 255-1963 IEEE Standard Letter Symbols for Semiconductor Devices.pdf
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1、IEEE Std 255-1963 IEEE Standard Letter Symbols for Semiconductor Devices (r U a U U 0 U U U F I I LL Published by The Institute of Electrical and Electronics Engineers, Inc 345 East 47th Street, New York, N Y 10017, USA Lkrrmhur 1963 SHO1446 Authorized licensed use limited to: Peking University. Dow
2、nloaded on December 26,2010 at 17:05:01 UTC from IEEE Xplore. Restrictions apply. ERRATA LETTER SYMBOLS FOR SEMICONDUCTOR DEVICES (IEEE No. 255) On pages 6 and 7: All h, y, z ; H, Y and Z characters should have been set in italic type On page 8: The M in the right-hand column should have been set in
3、 italic type Authorized licensed use limited to: Peking University. Downloaded on December 26,2010 at 17:05:01 UTC from IEEE Xplore. Restrictions apply. CONTENTS Page 1 . ELECTRICAL QUANTITIE-S . 1.1 Quantity Symbols . Subscripts for Quantity Symbols 1.2 1.3 The Subscript Sequence Conforms to the Ma
4、thematical Convention for Writing Determinants from a Set of Fundamental Kirchnoffs Equations 2 . ELECTRICAL PARAMETERS . 2.1 Parameter Symbols . 2.2 Subscript for Parameter Symbols . 3 . LETTER SYMBOLS IN ALPHABETICAL ORDER 3 Authorized licensed use limited to: Peking University. Downloaded on Dece
5、mber 26,2010 at 17:05:01 UTC from IEEE Xplore. Restrictions apply. INTRODUCTION These Standards are supplementary to the IRE Standards on Abbreviations, Graphical Symbols, and Mathematical Signs-1948, Section 1. The usage conforms to Section 101, General Principles of Letter Symbol Standardization.
6、This Standard provides a uniform system of letter symbols for electrical quantities and parameters as applied to semiconductor devices in the same way that Section 102 provides symbols for electron tubes. The Standard has been divided into three Sections : 1. Electrical quantities, dealing primarily
7、 with voltage, current, and time quantities. 2. Electrical parameters, dealing with the relationship between specific electrical quantities. 3. List of letter symbols in alphabetical order. Electrical quantities at the device terminals are defined in Section 1. The electrical parameters of Section 2
8、 are ratios of the terminal electrical quantities; i.e., they are two-terminal-pair open- and-short-circuit ratios. Numeric subscripts arc used for those ratios throughout this Standard ; letter subscripts may be used when convenient. ACKNOWLEDGMENT The Institute wishes to ackirowledge its indebtedn
9、ess to those who have so freely given of their time and knowledge and have conducted experimental work on which many of the IEEE publications are based. This publication was prepared jointly by Task Group 28.4.12 of the Semiconductor Devices Subcommittee o f the IRE Solid-state Devices Committee, th
10、e IRE Symbols Committee, and the Rectifier Device Working Group of the Component Subcommittee of the AIEE Semiconductor Rectifiers Committee. IRE Task Group 28.4.12 J. M. Goldey, Chairinan F. P. Burns, Secretary, 1959-61 W. T. Matzen, Secretary, 1961-63 R. S. Biesele N. Holonyak, Jr. F. S. Stein How
11、ard Starke AIEE Rectifier Device Working Group J. R. Thurell, Chairman R. P. Lyon, Secretary P. W. Clarke A. L. DiVenuti L. H. Dixon Alfred Ertel J. Gramels J. Priest F. S. Stein IRE Symbols Committee J. M. Carroll, Chairman C. A. Fricke, Vice-Chairmart H. L. Cook, Secrctary T. N. Anderson D. Drusdo
12、w H. J. Elschner W. J. Everts D. M. Faller R. T. Haviland D. Howell K. K. Kuller L. A. Meadows C. D. Mitchell R. V. Rice S. V. Soanes R. M. Stern R. G. Stranix H. R. Terhune L. H. Warren 0 Copyright 1963 by The Institute of Electrical and Electronics Engineers, Inc. Authorized licensed use limited t
13、o: Peking University. Downloaded on December 26,2010 at 17:05:01 UTC from IEEE Xplore. Restrictions apply. LETTER SYMBOLS FOR SEMICONDUCTOR DEVICES 1. ELECTRICAL QUANTITIES 1.1 Quantity Symbols 1.1.1 Instantaneous values of current, voltage, and power, that vary with time, are represented by the low
14、er- case letter of the proper symbol. Examples: i, v, p 1.1.2 Maximum (peak), average (direct-current), and root-meaii-square values of current, voltage, and power are represented by the upper-case letter of the appropriate symbol. Examples : I , V , P 1.2 Subscripts for Quantity Symbols 1.2.1 Direc
15、t-current values and instantaneous total values are indicated by upper-case subscripts. Examples : ic, IC, ?ER, VEB, Pc, Pc 1.2.2 Alternating-component values are indicated by lower-case subscripts. Examples : i , , I, ieb, v e b , p c . Pc 1.2.3 To distinguish between maximum (peak), aver- age. and
16、 root-mean-square values, maximum values are represeiited by the addition of a subscript M or m, and average by (AV). No;ct Where this distinction is not necessary, the ad- Examples : i , , . , I, Icm, IC(*V) ditional subscript may be omitted. 1.2.4 Symbols to be used as subscripts. (For example, se
17、e Figure 1 and Basic Symbols Chart 1.2.5.) E, e = emitter terminal B, b =base terminal C, c = collector terminal J, j =terminal. general A, a ranode terminal K, k =cathode terminal G, g = gate termiiial X, x = circuit node M, m = maximum value Min, min = minimum value (AV) = average value 1.2.5 .4 f
18、inal subscript may be used to identify the termination of the port other than the one to which the quantity is referred : 0 = Open-circuit termination S = Short-circuit termination X General termination R = Resistive termination V = Bias-Voltage termination This subscript should be upper case if the
19、 other sub- scripts are upper case, and lower case if the other sub- scripts are lower case. Example: Icao. ICES, V(RR)CER 1.2.6 Basic Symbols Chart (Table I) TABLE I SYMBOLS Iiistaiitaneous Value of Alternating Component Root-Mean-Square Value of Alternating Component With additional subscript m, l
20、laximum (peak) Value of Alternating Component Direct-current Value With additional subscript M, Maximum (Peak) Total Value With additional subscript (AV) Direct-current Value with Alternating Component Iiistantaneous Total Value 5 Authorized licensed use limited to: Peking University. Downloaded on
21、December 26,2010 at 17:05:01 UTC from IEEE Xplore. Restrictions apply. 1.2.7 Examples of application of basic symbols chart. IE =emitter direct-current (no alternating com- I. = root-mean-square value of alternating com- i. = instantaneous value of alternating component i= = instantaneous total valu
22、e of emitter current I B ( A v ) = average of emitter current with alternating I . , =maximum (peak) value of the alternating 1.y =maximum total (peak) value of the emitter ponent) ponent of emitter current of emitter current component component of emitter current current 1.3 The Subscript Sequence
23、Conforms to the Mathemat- ical Convention for Writing Determinants from a Set of Fundamental Kirchhoffs Equations 1.3.1 The first subscript designates the terminal at which the current is measured, or where the terminal po- tential is measured with respect to the reference terminal, or circuit node,
24、 designated by the second subscript. (Con- ventional current flow into the terminal from the external circuit is positive.) When the reference terminal or circuit node is understood, the second subscript may be omitted where its use is not required to preserve the meaning of the symbol. Supply volta
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