P–n diode
| Component type | Semiconductor |
|---|---|
| Working principle | p–n junction |
| Pin names | A: Anode, K: Cathode |
| Electronic symbol | |
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A p–n diode is a type of semiconductor diode based upon the p–n junction. The diode conducts current in only one direction, and it is made by joining a p-type semiconducting layer to an n-type semiconducting layer. Semiconductor diodes have multiple uses including rectification of alternating current to direct current, in the detection of radio signals, and emitting and detecting light.