# BZT52B20BS

**Slkor SLKORMICRO Elec** · Zener Diodes · SOD-323

BZT52B20BS from Slkor SLKORMICRO Elec, in a SOD-323. 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOD-323 |
| Category | Diodes |
| Pins | 2 |

## 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 | VZ | 19.6 | 20 | 20.4 | V | IZT=5.0mA | 2 |
| Maximum Zener Impedance | ZZT |  |  | 55 | Ω | @ IZT=5.0mA | 2 |
| Maximum Zener Impedance (knee) | ZZK |  |  | 225 | Ω | @ IZK=1.00mA | 2 |
| Maximum Reverse Current | IR |  |  | 0.1 | µA | VR=14.0V | 2 |
| Maximum Forward Voltage | VF |  |  | 0.9 | V | IF=10mA | 1 |
| Power Dissipation | PD |  |  | 400 | mW | Note 1 | 1 |
| Maximum Forward Current | IFM |  |  | 300 | mA |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  | 313 |  | °C/W | Junction to Ambient | 1 |
| Zener Voltage Tolerance |  | -2 |  | 2 | % | Standard Vz tolerance | 1 |

## CAD (KiCad official)

- Symbol: `BZT52B20BS`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `bzt52b20bs-etched.step` / `bzt52b20bs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52b20bs.step` / `bzt52b20bs.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/8590233316369592320) (3 pp, sha256 `ffb3d7057515e953`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/bzt52b20bs-datasheet.pdf)