There are many versions of the symbol for each component in electronics. Below I’ve listed the ones I’m using the most.
Battery
 |
 |
Resistor
 |
 |
Capacitor (Polarized)
 |
 |
Capacitor (Non-Polarized)
 |
 |
Light-Emitting Diode (LED)
 |
 |
Transistor
  |
 |
Integrated Circuit
The symbol for intgrated circuits (IC) come in different forms. An IC that has a common function like a logic gate or an op-amp, usually is shown as the symbol for that function (like the schmitt-triggered inverter below). An IC that does not have a symbol for it’s function is usually shown as a box with pins and pin names (like the 555 timer below).
  |
 |
Other symbols and components
Note that there are more version of each of these symbols and components that are not listed here. I’ve listed the ones I use the most.
What’s the hardest part in identifying components for you? Let me know in the comment field below.
Kathiresh says
Sir,basically how to learn about pcb..It is possible to learn basic students?say your opinion!!
admin says
Hey,
You can start here:
http://www.build-electronic-circuits.com/pcb-design/
Best,
Oyvind
David Smith says
Oyvind, always great and easy to follow instructions. Would you be able to develop an article on how a person could produce a printed circuit board by etching and using a software program.
Thanks
David Smith
admin says
Hey David,
Maybe these articles might be helpful for you:
http://www.build-electronic-circuits.com/pcb-design/
http://www.build-electronic-circuits.com/diy-pcb/
Best,
Oyvind
Yehud Benjamin says
hey oyvind, i have many components i cant identify, they dont have parts number too. can you tell me what they are, if i post photoes of them
Stanley says
how to study IC