# BZT52B4V7

**YONGYUTAI** · Zener Diodes · SOD-123

BZT52B4V7 from YONGYUTAI, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YONGYUTAI |
| 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 | 4.61 | 4.7 | 4.79 | V | Test current IZT = 5 mA (device 2W7) | 1 |
| Maximum Zener impedance | ZZT |  |  | 80 | Ω | @ IZT = 5 mA | 1 |
| Maximum Zener impedance (knee) | ZZK |  |  | 500 | Ω | @ IZK = 1.0 mA | 1 |
| Maximum reverse current | IR |  |  | 3 | uA | @ VR = 2.0 V | 1 |
| Typical temperature coefficient | IZTC | -3.5 |  | 0.2 | mV/℃ | Test current 5 mA | 1 |
| Power dissipation | Pd |  |  | 500 | mW |  | 1 |
| Forward voltage | Vf |  | 0.9 |  | V | @ IF = 10 mA | 1 |
| Thermal resistance, junction to ambient air | RθJA |  | 357 |  | ℃/W |  | 1 |
| Junction / operating temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature range | Ts | -65 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `BZT52B4V7`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `bzt52b4v7-etched.step` / `bzt52b4v7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52b4v7.step` / `bzt52b4v7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YONGYUTAI datasheet](docs/bzt52b4v7-datasheet.pdf) (5 pp, sha256 `8b6d8b5c7e2f7931`, retrieved 2026-11-04, 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/bzt52b4v7-datasheet.pdf)