# BZT52C3V6S

**Changjing** · Zener Diodes · SOD-323

BZT52C3V6S from Changjing, 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 | K | passive | Cathode, the banded end marked "-" on the SOD-323 drawing; the zener voltage is 3.4 V min to 3.8 V max at IZT = 5 mA for the BZT52C3V6S. |
| 2 | A | passive | Anode, the lead marked "+" on the SOD-323 drawing; the maximum forward voltage is 0.9 V at IF = 10 mA, with 200 mW power dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (nominal, BZT52C3V6S) | VZ | 3.4 | 3.6 | 3.8 | V | @ IZT, IZT = 5 mA | 2 |
| Typical temperature coefficient |  | -3.5 |  | 0 | mV/℃ | @ IZTC, test current IZTC = 5 mA | 2 |
| Maximum Zener impedance | ZZT |  |  | 90 | Ω | @ IZT = 5 mA | 2 |
| Maximum Zener impedance | ZZK |  |  | 600 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum reverse current | IR |  |  | 5 | µA | @ VR = 1.0 V | 2 |
| Power dissipation | PD |  |  | 200 | mW | Note 1: device mounted on ceramic PCB 7.6mm x 9.4mm x 0.87mm, pad area 25mm2 | 1 |
| Forward voltage | VF |  |  | 0.9 | V | @ IF = 10mA (Note 2) | 1 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature range |  | -5 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient | RθJA |  |  | 625 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BZT52C3V6S`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `bzt52c3v6s-etched.step` / `bzt52c3v6s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52c3v6s.step` / `bzt52c3v6s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172196569538560) (3 pp, sha256 `b2de1300cc5939db`, retrieved 2026-10-23, 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/bzt52c3v6s-datasheet.pdf)