# FODM2701

**onsemi** · Optocouplers - Phototransistor Output · SOP-4-2.54mm

FODM2701 from onsemi, in a SOP-4-2.54mm. 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 infrared emitting diode (LED input). |
| 2 | CATHODE | passive | Cathode of the infrared emitting diode (LED input). |
| 3 | EMITTER | passive | Emitter of the output phototransistor. |
| 4 | COLLECTOR | passive | Collector of the output phototransistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOP-4-2.54mm |
| Category | Optocoupler/LED/Digital Tube/Photoelectric Device |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `FODM2701`
- Footprint: `Package_SO:SOP-4_3.8x4.1mm_P2.54mm`
- 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files: `fodm2701-etched.step` / `fodm2701-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fodm2701.step` / `fodm2701.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588927831703228416) (13 pp, sha256 `69f688cae5c4ae69`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/fodm2701-datasheet.pdf)