# BZT52C5V1-W8

**LGE** · Zener Diodes · SOD-123

BZT52C5V1-W8 from LGE, 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 Zener diode; BZT52C5V1 has VZ 5.1V nominal (4.8-5.4V) at IZT=5mA, with the cathode end marked by the band on the package. |
| 2 | A | passive | Anode of the Zener diode; forward voltage 0.9V at IF=10mA and power dissipation 500mW maximum on ceramic PCB. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| 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 | VZ | 4.8 | 5.1 | 5.4 | V | @ IZT = 5 mA | 2 |
| Maximum Zener impedance | ZZT |  |  | 60 | Ω | @ IZT = 5 mA | 2 |
| Maximum Zener impedance (knee) | ZZK |  |  | 480 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum reverse current | IR |  |  | 2 | µA | @ VR = 2.0 V | 2 |
| Typical temperature coefficient | IZTC | -2.7 |  | 1.2 | mV/℃ | Test current IZTC = 5 mA | 2 |
| Power dissipation | Pd |  |  | 500 | mW | Ta=25℃ | 1 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature range | Tstg | -65 |  | 150 | ℃ |  | 1 |
| Forward voltage | VF |  |  | 0.9 | V | @ IF = 10mA | 1 |
| Thermal resistance, junction to ambient air | RθjA |  | 305 |  | ℃/W | junction to ambient air | 1 |

## CAD (KiCad official)

- Symbol: `BZT52C5V1-W8`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `bzt52c5v1-w8-etched.step` / `bzt52c5v1-w8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52c5v1-w8.step` / `bzt52c5v1-w8.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835027069767680) (3 pp, sha256 `8bae967198e01a40`, retrieved 2026-10-17, 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/bzt52c5v1-w8-datasheet.pdf)