Here’s a list of common abbreviations for electronic components on circuit boards (PCBs).
| AE | Aerial (antenna) |
| B | Battery |
| BR | Bridge rectifier |
| C | Capacitor |
| D, CR | Diode |
| DSP | Digital signal processor |
| F | Fuse |
| FET | Field effect transistor |
| IC | integrated circuit |
| J | Jumper wire |
| JFET | Junction field-effect transistor |
| L | Inductor |
| LDR | Light dependent resistor |
| LED | Light emitting diode |
| LS | Speaker |
| M | Motor |
| Mic | Microphone |
| MOSFET | Metal oxide semiconductor field effect transistor |
| OP | Op Amp |
| Q | Transistor |
| R | Resistor |
| RLA, RY | Relay |
| SCR | Silicon controlled rectifier |
| SW | Switch |
| T | Transformer |
| TFT | Thin film transistor |
| TH | Thermistor |
| TP | Test point |
| Tr | Transistor |
| U | Integrated circuit |
| VC | Variable capacitor |
| VR | Variable resistor |
| X | Crystal, ceramic resonator |
| XMER | Transformer |
| XTAL | Crystal |
| Z | Zener diode |