Symbols And Abbreviations
| Abbreviation | Words |
|---|---|
A | Ampere (AC rms or DC) |
a | Ampere (peak) |
A/D | Analog to digital |
AC | Alternating Current |
AC/DC | Alternating Current or Direct Current |
ADC | Analog to Digital Converter |
AF | Audio Frequency |
AH | Ampere hour |
AM | Amplitude Modulation |
FM | Frequency Modulation |
AWG | American Wire Gauge |
B | Transistor Base Electrode |
B | Magnetizing Flux Density |
BCD | Binary Coded Decimal |
BJT | Bipolar Junction Transistor |
BV | Breakdown Voltage |
BVCEO | Breakdown voltage, collector-to-emitter junction reverse biased (base open) |
BVCES | Breakdown voltage, collector-to-emitter junction reverse biased (base Shorted) |
BVCOB | Breakdown voltage, collector-to-emitter junction reverse biased (emitter open) |
BW | Bandwidth |
C | Centi (10-1) |
D/A | Digital to Analog |
DC | Direct Current |
DIP | Dual in line package |
E | Transistor Emitter electrode |
EHF | Extremely High Frequency |
EHV | Extra High Voltage |
ELF | Extremely low Frequency |
EMF | Electromotive Force |
EMI | Electromagnetic Interference |
F | Farad |
f | Frequency |
fab | Common Base small signal cutoff frequency |
fae | Common Emitter small signal cutoff frequency |
FET | Field Effect Transistor |
FF | Flip Flop |
FM | Frequency Modulation |
FOSC | Maximum frequency of Oscillation |
G | Conductance |
G | Giga (109) |
gm | Small Signal Transconductance |
gM, gFE | Static or DC Trans conductance |
GM, GFE | Large Signal Trans conductance |
H | Henry |
H | Magnetic Field Intensity, Magnetizing Flux |
HF | High Frequency |
hfb | Common Base Small Signal Forward Current Transfer Ratio |
hfe | Common Emitter Small Signal Forward Current Transfer Ratio (Base Input) |
hFE | Common Emitter DC Forward Current Transfer Ratio, Current gain (IC/IB) |
hrb | Common Base Small Signal Reverse Transfer Voltage Ratio (Emitter Input) |
hrc | Common Collector Small Signal Reverse Transfer Voltage Ratio (Base Input) |
hre | Common Emitter Small Signal Reverse Transfer Voltage Ratio (Base Input) |
Hz | Hertz |
I | Current |
i | Instantaneous Current |
I/O | Input/Output |
IB | Base Current |
IC | Integrated Circuit |
IC | Collector Current |
ICBO,ICO | Collector Cutoff Current (Emitter Open) |
ICEO | Collector Cutoff Current (Base Open) |
ICER | Collector Cutoff Current (Specified Resistance Base Emitter) |
IE | Emitter Current |
IEBO | Emitter Cutoff Current (Collector Open) |
Ieff | Effective Current |
IF | Forward Current (DC) |
iFr | Forward Recovery Current (Specified Instantaneous Value) |
IO | Output Current (DC) |
IR | Infrared |
IR | Reverse Current (DC) |
iR | Reverse Current (Peak) |
iRr | Reverse Recovery Current (Specified Instantaneous Value) |
IS | Secondary Current |
isurge | Surge Current |
Iz | Zener Current |
IZK | Zener Knee Current |
IZM | Zener Maximum Current |
IZT | Zener Test Current |
JFET | Junction Field Effect Transistor |
K | Coefficient of Coupling |
k | Kilo (103) |
kHz | Kilohertz |
kWh | Kilowatt hour |
L | Coil, Inductance |
LC | Inductance Capacitance |
LCD | Liquid Crystal Display |
LCR | Inductance Capacitance Resistance |
LDR | Light Dependent Diode |
LED | Light Emitting Diode |
LF | Low Frequency |
LM | Mutual Inductance |
LNA | Low Noise Amplifier |
LSI | Large Scale Integration |
m | Milli (10-3) |
M | Mega (106) |
M | Mutual Conductance |
MCU | Microcontroller |
MF | Medium Frequency |
MHz | Megahertz |
MI | Mutual Inductance |
mmf | Magnetomotive force |
MOS | Metal Oxide Semiconductor |
MOSFET | Metal Oxide Semiconductor Field Effect Transistor |
MPU | Microprocessor Unit |
N | Number of Turns of Inductor/Transformers |
n | Nano (10-9) |
NC | Normally Closed |
NC | No Connection |
NO | Normally Open |
NPN | Negative Positive Negative |
OP AMP | |
p | Pico (10-12) |
P | Power |
p | Instantaneous Power |
PAL | Programmable Array Logic |
PAM | Pulse Amplitude Modulation |
Pap | Apparent Power |
Pav | Average Power |
PCB | Printed Circuit Board |
PCM | Pulse Code Modulation |
Pd | Power Dissipation of Device (Average) |
PDM | Pulse Duration Modulation |
PIV | Peak Inverse Voltage |
PLD | Programmable Logic Device |
PLL | Phase Locked Loop |
PM | Phase Modulation |
PNP | Positive Negative Positive |
POT | Potentiometer |
P-P | Peak to Peak |
PPM | Pulse Position Modulation |
PRF | Pulse Repetition Frequency |
PWM | Pulse Width Modulation |
Q | Charge also Quantity |
q | Instantaneous Charge |
Q | Transistor |
R | Resistor |
RC | Resistance Capacitance |
rect | Rectifier |
ref | Reference |
RF | Radio Frequency |
RFI | Radio Frequency Interference |
RL | Load Resistor |
RLC | Resistance Inductance Capacitance |
RMS | Root Mean Square |
rpm | Revolution Per Minute |
SCR | Silicon Controlled Rectifier |
SHF | Super High Frequency |
SIP | Single in Line Package |
SMC | Surface Mount Components |
SMD | Surface Mount Devices |
SMT | Surface Mount Technology |
SNR | Signal to Noise Ratio |
SO | Small Outline |
SOD | Small Outline Diode |
SOIC | Small Outline Integrated Circuit |
SOT | Small Outline Transistor |
SPDT | Single Pole Double Throw |
SW | Short Wave |
T | Tera (1012) |
T | |
t | Time |
T, temp | Temperature |
TA | Ambient Temperature |
TC | Temperature Case |
TC | Time Constant, also Temperature Coefficient |
td | Pulse delay time |
tf | Pulse fall time |
tfr | Forward Recovery Time |
Tj | Junction Temperature |
tP | Pulse Time |
tr | Pulse Rise Time |
ts | Pulse Storage Time |
TTL | Transistor to Transistor Logic |
UHF | Ultra-High Frequency |
UHV | Ultra-High Voltage |
UJT | Unijunction Transistor |
UV | Ultraviolet |
V | Volt (DC) |
v | Volt (Peak), Instantaneous voltage |
VA | Volt Ampere |
Va-c | Volt (AC) |
VBB | Base Voltage (DC) Supply |
VBE | Base to Emitter Voltage (DC) |
VCC | Collector voltage (DC) Supply |
VCE | Collector to Emitter Voltage (DC) |
VCEsat | Collector to Emitter Saturation Voltage |