# MMBZ5232B

**Slkor SLKORMICRO Elec** · Zener Diodes · SOT-23

MMBZ5232B from Slkor SLKORMICRO Elec, in a SOT-23. 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 | A | passive | Anode of the zener diode, per the connection diagram on page 1; VZ is 5.6V nominal (5.32V to 5.88V) at IZT=20mA. |
| 2 | NC | unconnected | No connection, marked 2 NC in the connection diagram on page 1. |
| 3 | K | passive | Cathode of the zener diode, per the connection diagram on page 1; power dissipation is 350mW maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal 5.6 V, Min/Max at IZT) | VZ | 5.32 | 5.6 | 5.88 | V | IZT=20 mA | 2 |
| Maximum Zener impedance | ZZT |  |  | 11 | Ω | IZT=20 mA | 2 |
| Maximum Zener impedance (knee) | ZZK |  |  | 1600 | Ω | IZK=0.25 mA | 2 |
| Maximum reverse leakage current | IR |  |  | 5 | μA | VR=3.0 V | 2 |
| Power dissipation | Pd |  |  | 350 | mW | Terminals kept at ambient temperature (note 1) | 1 |
| Operating and storage temperature range | Tj, Tstg | -65 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient air | RθjA |  |  | 357 | ℃/W | Junction to ambient air | 1 |

## CAD (KiCad official)

- Symbol: `MMBZ5232B`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbz5232b-etched.step` / `mmbz5232b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbz5232b.step` / `mmbz5232b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756692822789632000) (4 pp, sha256 `8096af577e1c32df`, retrieved 2026-10-18, 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/mmbz5232b-datasheet.pdf)