What Is the PC827? Dual-Channel Optocoupler: Pinout and Uses
October 27, 2026 4 min read
Quick answer
The PC827 is a dual-channel opto-isolator with two PC817 optocouplers in one package. It is used to isolate two signals with one chip (~5000 V isolation). Pinout DIP-8: 1 Anode1, 2 Cathode1, 3 Anode2, 4 Cathode2; 5 Emitter2, 6 Collector2, 7 Emitter1, 8 Collector1. Same tasks as the PC817 but two channels.
The PC827 is a dual-channel opto-isolator with two PC817 optocouplers in one package. It saves space and cost when two signals need isolation. For the concept, see what is an optocoupler.
What is the PC827 used for?
The same tasks as the PC817 (signal isolation, level shifting, feedback) but two channels: e.g. isolating two separate digital signals or a bidirectional line with one chip.
PC827 pinout (DIP-8)
| Pin | Function |
|---|---|
| 1 | Anode 1 |
| 2 | Cathode 1 |
| 3 | Anode 2 |
| 4 | Cathode 2 |
| 5 | Emitter 2 |
| 6 | Collector 2 |
| 7 | Emitter 1 |
| 8 | Collector 1 |
Specifications
| Parameter | Value |
|---|---|
| Type | Dual-channel phototransistor optocoupler |
| Channels | 2 (2× PC817) |
| Isolation | ~5000 Vrms |
Equivalents
- PC817: the single-channel version.
- PC847: a four-channel part.
- LTV827: a drop-in equivalent.
Find it in our catalog
Use the PC827 search.
Frequently Asked Questions
What is the PC827?+
The PC827 is a dual-channel opto-isolator with two PC817 optocouplers in one package. It is used to isolate two signals with one chip (~5000 V isolation).
What is the PC827 pinout?+
DIP-8: 1 Anode1, 2 Cathode1, 3 Anode2, 4 Cathode2 (input LEDs); 5 Emitter2, 6 Collector2, 7 Emitter1, 8 Collector1 (output transistors).
How does the PC827 differ from the PC817?+
The PC827 is two-channel (2× PC817), the PC817 is single-channel. When two signals need isolating, the PC827 saves space and cost.
What are PC827 equivalents?+
The single-channel PC817; the four-channel PC847; the drop-in equivalent LTV827.