# ZMM5267B

**JSMSEMI** · Zener Diodes · MiniMELF

ZMM5267B from JSMSEMI, in a MiniMELF. 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 terminal, marked by the color band on the glass case; the zener is operated reverse-biased with this end positive (VZ 75V at IZT 1.7mA for ZMM5267B). |
| 2 | A | passive | Anode terminal, the end opposite the color band; forward voltage is 1.1V max at IF=200mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | MiniMELF |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ZMM5267B`
- Footprint: `Diode_SMD:D_MiniMELF`
- 3D model: MiniMELF (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590196419974885376) (3 pp, sha256 `9216eb724ff32d2b`, 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/zmm5267b-datasheet.pdf)