# 1N5358B

**SUNMATE Elec** · Zener Diodes · DO-27

1N5358B from SUNMATE Elec, in a DO-27. 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, the end marked with the cathode band; positive with respect to the anode in Zener (reverse) operation, with nominal VZ 5.1 to 200 V depending on type and 5.0 W maximum DC power dissipation. |
| 2 | A | passive | Anode, the lead at the end without the cathode band; forward voltage is a maximum of 1.2 V at IF = 1 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SUNMATE Elec |
| Package | DO-27 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `1N5358B`
- Footprint: `Diode_THT:D_DO-27_P15.24mm_Horizontal`
- 3D model: DO-27 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [SUNMATE Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603087463909388288) (2 pp, sha256 `d88a3fa58bcde066`, 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/1n5358b-datasheet.pdf)