Table 5-1. Reference Designations, Abbreviations and Multipliers

REFERENCE DESIGNATIONS
A
Assembly FFuse RT Thermistor
AT Attenuator, Isolator, FL Filter
S
Switch
Limiter, Termination HY Circulator TTransformer
B
Fan, Motor JElectrical Connector TB Terminal Board
BT Battery (Stationary Portion), TC Thermocouple
CCapacitor Jack TP Test Point
CP
Coupler KRelay
U
Integrated Circuit,
CR Diode, Diode
L
Coil, Inductor Microcircuit
Thyristor, Step
M
Meter
V
Electron Tube
Recovery Diode, MP Miscellaneous VR Breakdown Diode
Varactor Mechanical Part (Zener),
DC Directional Coupler PElectrical Connector Voltage Regulator
DL
Delay Line (Movable Portion), W Cable, Wire, Jumper
DS
Annunciator, Lamp, Plug
X
Socket
Light Emitting
Q
Silicon Controlled Y Crystal Unit
Diode (LED), Rectifier (SCR), (Piezoelectric,
Signaling Device Transistor, Quartz)
(Visible) Triode Thyristor Z Tuned Cavity,
E
Miscellaneous Electrical Part R Resistor Tuned Circuit
A
4Across Flats, Acrylic,
Air (Dry Method),
Ampere
4DJ Adjust, Adjustment
4NSI American National
Standards Institute
(formerly
USASI-ASA)
4SSY
Assembly
4WG
American Wire Gage
B
3CD
Binary Coded
Decimal
3D
Board, Bundle
3E-CU
Beryllium Copper
3NC
Type of Connector
3RG
Bearing, Boring
3RS
Brass
ABBREVIATIONS
BSC Basic CNDCT Conducting,
BTN Button Conductive,
Conductivity,
C
Conductor
CONT Contact,
CCapacitance, Continuous,
Capacitor, Control,
Center Tapped, Controller
Cermet, Cold, CONV Converter
Compression CPRSN Compression
CCP Carbon Composition CUP-PT Cup Point
Plastic cw Clockwise,
CD Cadmium, Card, Continuous Wave
Cord
CER Ceramic
CHAM Chamfer
CHAR Character,
D
Characteristic,
Charcoal
D
Deep, Depletion,
CMOS Complementary Depth, Diameter,
Metal Oxide Direct Current
Semiconductor DA Darlington

Replaceable Parts 5-3