Understanding Electronics www.
kitronik.
co.
uk Component Identification
www.
kitronik.
co.
uk Page 1 of 2
Kitronik Ltd – How to Identify Components
Component Identification
Capacitor
Electrolytic capacitors (cylindrical
shape) are marked with a band
and...
More
Understanding Electronics www.
kitronik.
co.
uk Component Identification
www.
kitronik.
co.
uk Page 1 of 2
Kitronik Ltd – How to Identify Components
Component Identification
Capacitor
Electrolytic capacitors (cylindrical
shape) are marked with a band
and ‘-‘ to indicate the negative
lead.
Diode
The band on the diode shows
polarisation, this must match the
marking on the board.
Integrated Circuit
The top picture is an IC holder
placed into the PCB, below are
ICs.
The notch on the holder
should line up with the notch on
the PCB.
LED
There is a flat edge on the LED,
this should line up with the flat on
the PCB.
Resistor
These can go in either way
around.
Transistor
The D shape of the transistor,
needs to be lined up with the D
on the PCB.
Capacitor values
The larger electrolytic capacitors tend to have the value printed on the side of them.
Other capacitors,
which are often smaller, may not have enough space to print the value in full and can use a 3-digit code.
The first 2 digit
Less
