References/designators.
Commonly used references of different components on pcbs and schematics
| Designation | Component Type |
|---|---|
| R | Resistor |
| C | Capacitor |
| L | Inductor |
| D | Diode |
| Q | Transistor (BJT, FET, MOSFET, etc.) |
| U | Integrated Circuit (IC) |
| IC | Integrated Circuit (alternative to U) |
| J | Connector or Jack |
| P | Plug or Connector |
| S | Switch |
| SW | Switch (alternative to S) |
| T | Transformer |
| X | Crystal or Oscillator |
| Y | Crystal or Oscillator (alternative to X) |
| F | Fuse |
| VR | Variable Resistor (Potentiometer) |
| LED | Light-Emitting Diode |
| Z | Zener Diode |
| M | Motor |
| B | Battery |
| K | Relay |
| TP | Test Point |
