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PC817 Optocoupler
PC817
SharpOptocoupler
The PC817 is a 4-pin optocoupler: an internal LED drives a phototransistor across an isolation barrier, letting one circuit control another with no electrical connection. Common for isolating MCU inputs/outputs.
In stock
Specifications
0No specs listed.
Pinout
4| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | Anode | — | LED anode (input +, via resistor) |
| 2 | Cathode | — | LED cathode (input -) |
| 3 | Emitter | — | Phototransistor emitter (output -) |
| 4 | Collector | — | Phototransistor collector (output +) |
Interactive pinout
PC817
Click a pin to copy its name · tap a tag above to spotlight a bus.