ALLIED'S ELECTRONICS DATA HANDBOOK

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  Abbreviations and Letter Symbols*
 
          Many of the abbreviations given are in lower-case letters. Obviously, however, there
will be occasions such as when the abbreviations are used in titles where the original word
would have been capitalized. In these cases, the abbreviation should be similarly capitalized.
        A two-word adjective expression should contain a hyphen. 		 

 
Term Abbrvi-
ation 		  Term Abbrvi-
ation
Admittance. . . . . . . . . . . . . . . . . . . . . . . . .

Alternating-current (adjective). . . . . . . . . . .

Alternating-current (noun). . . . . . . . . . . . . .

Ampere . . . . . . . . . . . . . . . . . . . . . . . . . . .

Angular velocity (2πƒ) . . . . . . . . . . . . . . . .

Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio-frequncy (adjective). . . . . . . . . . . . .

Audio-frequncy (noun). . . . . . . . . . . . . . . .

Automatic volume control. . . . . . . . . . . . . .

Automatic volume expansion. . . . . . . . . . . .

Capacitance. . . . . . . . . . . . . . . . . . . . . . . .

Capacitive reactance . . . . . . . . . . . . . . . . . 

Centimeter. . . . . . . . . . . . . . . . . . . . . . . . .

Conductance . . . . . . . . . . . . . . . . . . . . . . .

Continuous wave . . . . . . . . . . . . . . . . . . . .

Current . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cycles per Second [Hertz]**. . . . . . . . . . . .

Decibel . . . . . . . . . . . . . . . . . . . . . . . . . . .

Direct-current (adjective). . . . . . . . . . . . . .

Direct-current (noun). . . . . . . . . . . . . . . . .

Double cotton covered . . . . . . . . . . . . . . .

Double pole, double throw . . . . . . . . . . . .

Double pole, single throw . . . . . . . . . . . . .

Double silk covered . . . . . . . . . . . . . . . . .

Electric field intensity. . . . . . . . . . . . . . . . .

Electromotive force. . . . . . . . . . . . . . . . . .

Frequency . . . . . . . . . . . . . . . . . . . . . . . .

Frequency modulation. . . . . . . . . . . . . . . .

Ground. . . . . . . . . . . . . . . . . . . . . . . . . . .

Henry. . . . . . . . . . . . . . . . . . . . . . . . . . . .

High-frequency (adjective) . . . . . . . . . . . .

High-frequency (noun) . . . . . . . . . . . . . . .

Impedance. . . . . . . . . . . . . . . . . . . . . . . .

Inductance. . . . . . . . . . . . . . . . . . . . . . . .

Inductive reactance. . . . . . . . . . . . . . . . . . 

Intermediate frequency (adjective). . . . . . .

Intermediate frequency (noun). . . . . . . . . .

Interrupted continuous waves . . . . . . . . . .

Kilocycle [Kilo-Hertz]** . . . . . . . . . . . . . .

Kilohm. . . . . . . . . . . . . . . . . . . . . . . . . . .

Kilovolt . . . . . . . . . . . . . . . . . . . . . . . . . .

Kilovolt ampere . . . . . . . . . . . . . . . . . . . .

Kilowatt. . . . . . . . . . . . . . . . . . . . . . . . . .
 Y

a-c [AC]**

a.c. [A.C.]**

a [A]**

ω

ant. [Ant.]**

a-f [AF]**

a.f. [A.F.]**

a.v.c. [AVC]**

a.v.e. [A.V.E]**

C

Xc

cm [cM]**

G

c.w. [C.W.]**

I, i [I]**

~

db [dB]**

d-c [DC]**

d.c. [D.C.]**

d.c.c

d.p.d.t. [DPDT]**

d.p.s.t. [DPST]**

d.s.c.

E

e.m.f. [emf]**

ƒ

f.m. [F.M. or FM]**

gnd.

h

h-f [HF]**

h.f. [H.F.]**

Ζ

L

XL

i-f [I-F]**

i.f. [I.F. or IF]**

i.c.w.

kc [KC or KHz ]**

kΩ [KΩ]**

kv [KV;]**

kva [KVA]**

kw [KW]**
   Low-frequency (adjective). . . . . . . . . . . . .

Low-frequency (noun). . . . . . . . . . . . . . . .

Magnetic field intensity. . . . . . . . . . . . . . . .

Megacycle[MegaHertz]**. . . . . . . . . . . . . .

Megohm . . . . . . . . . . . . . . . . . . . . . . . . . .

Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Microampere. . . . . . . . . . . . . . . . . . . . . . .

Microfarad (mfd). . . . . . . . . . . . . . . . . . . .

Microhenry . . . . . . . . . . . . . . . . . . . . . . . .

Micromicrofarad (mmfd) . . . . . . . . . . . . . .

Microvolt. . . . . . . . . . . . . . . . . . . . . . . . . .

Microvolt per meter. . . . . . . . . . . . . . . . . . 

Microwatt . . . . . . . . . . . . . . . . . . . . . . . . .

Milliampere . . . . . . . . . . . . . . . . . . . . . . . .

Millihenry. . . . . . . . . . . . . . . . . . . . . . . . . .

Millivolt. . . . . . . . . . . . . . . . . . . . . . . . . . .

Millivolt per meter . . . . . . . . . . . . . . . . . . .

Milliwatt . . . . . . . . . . . . . . . . . . . . . . . . . .

Modulated continuous wave. . . . . . . . . . . .

Mutual inductance . . . . . . . . . . . . . . . . . . .

Ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power factor. . . . . . . . . . . . . . . . . . . . . . .

Radio-frequency (adjective). . . . . . . . . . . .

Radio-frequency (noun). . . . . . . . . . . . . . .

Reactance. . . . . . . . . . . . . . . . . . . . . . . . .

Resistance. . . . . . . . . . . . . . . . . . . . . . . . .

Revolutions per minute. . . . . . . . . . . . . . . .

Root mean square . . . . . . . . . . . . . . . . . . .

Self-inductance . . . . . . . . . . . . . . . . . . . . .

Short wave . . . . . . . . . . . . . . . . . . . . . . . .

Single coton covered. . . . . . . . . . . . . . . . .

Single cotton enamel . . . . . . . . . . . . . . . . .

Single pole, Double throw . . . . . . . . . . . . .

Single pole, single throw. . . . . . . . . . . . . . . 

Single silk covered. . . . . . . . . . . . . . . . . . .

Tuned radio frequency. . . . . . . . . . . . . . . .

Ultra high frequency. . . . . . . . . . . . . . . . . .

Vacuum tube voltmeter . . . . . . . . . . . . . . .

Volt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . .

Volt-Ohm-Milliameter. . . . . . . . . . . . . . . .

Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 l-f [LF]**

l.f. [L.F.]**

H

Mc [MC or MHz ]**

MΩ

m [M]**

μa [μA]**

μf [μF]**

μh [μH]**

μμf [μμF]**

μv [μV]**

μv/m [μV/M]** 

μw [μW]**

ma [mA]**

mh [mH]**

mv [mV]**

mv/m [mV/M]**

mw [MW]**

m.c.w.

M

Ω

P

p.f.

r-f [RF]**

r.f. [R.F.]**

X

R

r.p.m. [rpm]**

r.m.s. [rms]**

L

s.w.

s.c.c.

s.c.e.

s.p.d.t. [SPDT]**

s.p.s.t. [SPST]** 

s.s.c.

t.r.f. [TRF]**

u.h.f. [UHF]**

v.t.v.m. [VTVM]**

v [V]**

E, e

v.o.m. [VOM]**

w [W]**
        * See Page 26 for Transistor Symbols.       See pages 41-42 for Metric Prefix Symbols.
 
        ** Conventions shown in red are the more modern conventions [XXX].
        Modern conventions are to put a Capital letter for the label (ie: Bels or Bells would be B),
        and multipliers larger than one (1) such as Kilo and Mega are in caps while multipliers
        Smaller than one (1) such as milli or Micro are represented with a small letter.
 

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