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#### 13.4.1.2 refdes naming conventions

There is a convention of the reference designator used for each kind of component. Here are some of them (substitute a cardinal value for <n>):

Prefix | Component type
--- | ---
R<n> | Resistor
RN<n> | Resistor Network
FB<n> | Ferrite Bead
L<n> | Inductor
C<n> | Capacitor
B<n> | Battery
F<n> | Fuse
J<n> | Connector
P<n> | Connector (usually plugs that mate with J<n>)
K<n> | Relay
S<n> | Switch
T<n> | Transformer
TP<n> | Testpoint
M<n> | Motor
D<n> | Diode
Q<n> | Transistor
U<n> | IC
X<n> | Crystal