# BZT52B75

**Yangzhou Yangjie Elec Tech** · Zener Diodes · SOD-123

BZT52B75 from Yangzhou Yangjie Elec Tech, 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 | Yangzhou Yangjie Elec Tech |
| 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 (Min) | VZ | 73.5 |  |  | V | IZT = 2 mA | 3 |
| Zener voltage (Typ) | VZ |  | 75 |  | V | IZT = 2 mA | 3 |
| Zener voltage (Max) | VZ |  |  | 76.5 | V | IZT = 2 mA | 3 |
| Maximum zener impedance | ZZT |  |  | 255 | Ω | IZT = 2 mA | 3 |
| Maximum zener impedance at knee | ZZK |  |  | 500 | Ω | IZK = 0.5 mA | 3 |
| Maximum knee test current | IZK |  |  | 0.5 | mA |  | 3 |
| Maximum reverse leakage current | IR |  |  | 0.05 | μA | VR = 52.5 V | 3 |
| Typical temperature coefficient |  | 73.4 |  | 88.6 | mV/℃ | IZTC = 2 mA | 3 |
| Forward voltage | VF |  |  | 1 | V | IF = 10 mA | 1 |
| Power dissipation | PD |  |  | 500 | mW | Ta=25℃ | 1 |
| Junction temperature | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction-to-ambient | RθJ-A |  |  | 250 | ℃/W | PCB with 8mm*9mm copper pad areas | 3 |
| Thermal resistance, junction-to-case | RθJ-C |  |  | 200 | ℃/W | PCB with 8mm*9mm copper pad areas | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin |  Terminals：Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `BZT52B75`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `bzt52b75-etched.step` / `bzt52b75-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52b75.step` / `bzt52b75.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/bzt52b75-datasheet.pdf) (7 pp, sha256 `3a37ef6e0c68d5c6`, 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/bzt52b75-datasheet.pdf)