# LUDZS12BT1G

**LRC** · Zener Diodes · SOD-323

LUDZS12BT1G from LRC, 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 | CATHODE | passive | Cathode terminal, identified by the polarity band on the package; the device is rated for 200 mW power dissipation and junction temperature up to 150 °C. |
| 2 | ANODE | passive | Anode terminal of the Zener diode; the datasheet gives no pin-specific limit for this terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 11.74 |  | 12.24 | V | IZT = 5 mA | 3 |
| Maximum Zener Impedance | ZZT |  |  | 30 | Ω | IZT = 5 mA | 3 |
| Rising operating resistance (maximum Zener impedance at IZK) | ZZK |  |  | 80 | Ω | Rising operating resistance; IZK test current not clearly labeled in extracted text | 3 |
| Reverse Leakage Current | IR |  |  | 0.1 | µA | VR = 9.0 V | 3 |
| Forward Voltage | VF |  |  | 0.9 | V | IF = 10 mA, for all types | 2 |
| Power dissipation | P |  |  | 200 | mW | Ta = 25°C | 1 |
| Junction temperature | Tj |  |  | 150 | °C | Absolute maximum rating, Ta = 25°C | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C | Absolute maximum rating, Ta = 25°C | 1 |
| Operating temperature | Topr | -55 |  | 150 | °C | Absolute maximum rating, Ta = 25°C | 1 |
| Thermal resistance, junction to ambient | RθJA |  | 635 |  | °C/W | Junction to ambient | 1 |

## CAD (KiCad official)

- Symbol: `LUDZS12BT1G`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `ludzs12bt1g-etched.step` / `ludzs12bt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ludzs12bt1g.step` / `ludzs12bt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586178886803050496) (5 pp, sha256 `75d6a738b864e1ee`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ludzs12bt1g-datasheet.pdf)