# BZX84C3V3W

**Yangzhou Yangjie Elec Tech** · Zener Diodes · SOT-323(SC-70)

BZX84C3V3W from Yangzhou Yangjie Elec Tech, in a SOT-323(SC-70). 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 | A | passive | Anode of the Zener diode (3.3V nominal, 3.1V to 3.5V at IZT=5mA), connected to the triangle side of the symbol. |
| 2 | NC | unconnected | No internal connection; the package symbol shows this lead with no connection to the diode. |
| 3 | K | passive | Cathode of the Zener diode, connected to the bar side of the symbol; 200mW power dissipation rating. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-323(SC-70) |
| Category | Diodes |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage (min) | VZ | 3.1 |  |  | V | IZT=5 mA | 2 |
| Nominal Zener Voltage (typ) | VZ |  | 3.3 |  | V | IZT=5 mA | 2 |
| Nominal Zener Voltage (max) | VZ |  |  | 3.5 | V | IZT=5 mA | 2 |
| Maximum Zener Impedance | ZZT |  |  | 95 | Ω | IZT=5 mA | 2 |
| Maximum Zener Impedance (knee) | ZZk |  |  | 600 | Ω | IZk=1 mA | 2 |
| Max Reverse Leakage Current | IR |  |  | 5 | uA | VR=1 V | 2 |
| Maximum Forward Voltage | VF |  |  | 0.9 | V | IF=10mA | 1 |
| Power Dissipation | PD |  |  | 200 | mW | Ta=25℃ | 1 |
| Peak Forward Surge Current | IFSM |  |  | 2 | A | 8.3ms, single half sine-wave | 1 |
| Operation Temperature | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance | RthJA |  | 625 |  | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BZX84C3V3W`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
- 3D model files: `bzx84c3v3w-etched.step` / `bzx84c3v3w-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c3v3w.step` / `bzx84c3v3w.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590167754872418304) (5 pp, sha256 `c3fc10e158963aff`, retrieved 2026-10-15, 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/bzx84c3v3w-datasheet.pdf)