# BZT52C30T1G

**MOT** · Zener Diodes · SOD-123

BZT52C30T1G from MOT, in a SOD-123. 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 of the 30 V zener (VZ 28.50-31.50 V at IZ=2mA); marked by the band on the package and held positive relative to the anode for regulation. |
| 2 | A | passive | Anode of the zener diode; forward voltage is 0.85 V max at IF=10mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MOT |
| Package | SOD-123 |
| 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, minimum | VZ | 28.5 |  |  | V | IZ=2mA | 3 |
| Zener voltage, nominal | VZ |  | 30 |  | V | IZ=2mA | 3 |
| Zener voltage, maximum | VZ |  |  | 31.5 | V | IZ=2mA | 3 |
| Typical temperature coefficient, minimum |  | 24.4 |  |  | mV/℃ | IZ=2mA | 3 |
| Typical temperature coefficient, maximum |  |  |  | 29.4 | mV/℃ | IZ=2mA | 3 |
| Total power dissipation | PD |  |  | 500 | mW | Tamb=25℃ | 1 |
| Maximum junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient (first value) | RθJA |  | 556 |  | ℃/W |  | 1 |
| Thermal resistance, junction to ambient (second value) | RθJA |  | 417 |  | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BZT52C30T1G`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `bzt52c30t1g-etched.step` / `bzt52c30t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52c30t1g.step` / `bzt52c30t1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MOT datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603003389768839168) (5 pp, sha256 `7f647f3c8e84fff3`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/bzt52c30t1g-datasheet.pdf)