# 1N4755APF-M

**ST Semtech** · Zener Diodes · DO-41

1N4755APF-M from ST Semtech, in a DO-41. 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 | K | passive | Cathode lead, marked by the black cathode band on the DO-41 glass case; it goes positive for Zener regulation (VZ 40.85…45.15 V at IZT = 6 mA for the 1N4755APF). |
| 2 | A | passive | Anode lead, the end opposite the cathode band on the DO-41 glass case; forward drop is VF max 1.2 V at IF = 200 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| Package | DO-41 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `1N4755APF-M`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-41 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [ST Semtech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756601090085400576) (3 pp, sha256 `4b0aaf964c54ea10`, retrieved 2026-10-13, tier: lcsc)
- **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/1n4755apf-m-datasheet.pdf)