Chapter 12 489
Replaceable Parts
Ordering Information
Table 12-1 Reference Designations
REFERENCE DESIGNATIONS
A Assembly F Fuse RT Thermistor
AT Attenuator,
Isolator,
Limiter,
Termination
FL Filter S Switch
HY Circulator T Transformer
B Fan, Motor J Electrical
Connector
(Stationary
Portion),
Jack
TB Terminal Board
BT Battery TC Thermocouple
C Capacitor TP Test Point
CP Coupler K Relay U Integrated Circuit,
CR Diode, Diode
Thyristor, Step
Recovery Diode,
Varactor
L Coil, Inductor Microcircuit
M Meter V Electron Tube
MP Miscellaneous
Mechanical Part
VR Breakdown Diode
(Zener),
DC Directional
Coupler
P Electrical
Connector
(Movable Portion),
Plug
Voltage Regulator
DL Delay Line W Cable, Wire,
Jumper
DS Annunciator,
Lamp, Light
Emitting Diode
(LED), Signaling
Device (visible)
Q Silicon Controlled
Rectifier (SCR),
Transistor, Triode
Thyristor
X
Y
Socket
Crystal Unit
(Piezoelectric,
Quartz)
Z Tuned Cavity,
Tuned Circuit
E Miscellaneous
Electrical Part
R Resistor
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