# PC817A

**GOODWORK** · Transistor, Photovoltaic Output Optoisolators · DIP-4

PC817A from GOODWORK, in a DIP-4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Anode | passive | Anode of the GaAs input LED (pin-1 dot marked Anode), with absolute maximum forward current IF 50 mA and reverse voltage VR 6 V. |
| 2 | Cathode | passive | Cathode of the GaAs input LED, with typical forward voltage VF 1.20 V (max 1.40 V) at IF=20 mA. |
| 3 | Emitter | passive | Emitter of the NPN phototransistor output, with VECO max 6 V and collector current IC max 50 mA. |
| 4 | Collector | passive | Collector of the NPN phototransistor output, with VCEO max 35 V and collector current IC max 50 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GOODWORK |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `PC817A`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `pc817a-etched.step` / `pc817a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pc817a.step` / `pc817a.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [GOODWORK datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603371782280142848) (7 pp, sha256 `68415a4881ca7639`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pc817a-datasheet.pdf)