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Table 1. Reference Designations, Abbreviations, and Multipliers (1 of 4)
Assembly
A
AT
Attenuator, Isolator,
Limiter, Termination
1
B
Fan, Motor
BT
Battery
1
Capacitor
Coupler
Diode, Diode
Thyristor, Step
Recovery Diode,
Varactor
Directional Coupler
I
I
Delay Line
I
Annunciator, Lamp,
Light Emitting
Diode (LED),
Signaling Device
(Visible)
1
Miscellaneous Electrical Part R
A
I
Across Flats, Acrylic,
Air (Dry Method),
Ampere
Adjust, Adjustment
Standards Institute
(formerly
B
Binary Coded
Decimal
Board, Bundle
Type of Connector
F
Bearing, Boring
Brass
REFERENCE DESIGNATIONS
F
FL
Filter
HY
Circulator
J
Electrical Connector TB
(Stationary Portion), TC
Jack
K
Relay
L
Coil, Inductor
M
Meter
MP
Miscellaneous
Mechanical Part
P
Electrical Connector
(Movable Portion), W
Plug
Silicon Controlled Y
Q
Rectifier (SCR),
Transistor,
Triode Thyristor Z
Resistor
ABBREVIATIONS
Basic
BSC
BTN
Button
C
C
Capacitance,
Capacitor,
Center Tapped,
Cermet, Cold,
Compression
CCP
Carbon Composition CUP-PT Cup Point
Plastic
CD
Cadmium, Card,
Cord
CER Ceramic
CHAM Chamfer
CHAR Character,
Characteristic,
Charcoal
CMOS Complementary
Metal Oxide
Semiconductor
RT
Thermistor
S
Switch
T
Transformer
Terminal Board
Thermocouple
TP
Test Point
U
Integrated Circuit,
Microcircuit
V
Electron Tube
V R
Breakdown Diode
(Zener),
Voltage Regulator
Cable, Wire, Jumper
X
Socket
Crystal Unit
(Piezoelectric,
Quartz)
Tuned Cavity,
Tuned Circuit
CNDCT Conducting,
Conductive,
Conductivity,
Conductor
CONT Contact,
Continuous,
Control,
Controller
CONV Converter
CPRSN Co mpression
Clockwise,
c w
Continuous Wave
D
D
Deep, Depletion,
Depth, Diameter,
Direct Current
DA
Darlington
General Parts Listing 3
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