# BZX84C4V7W-7-F

**Diodes Incorporated** · Zener Diodes · SOT-323

BZX84C4V7W-7-F from Diodes Incorporated, in a SOT-323. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A | passive | Anode of the zener diode, the lower-left lead in the top-view device schematic. |
| 2 | NC | unconnected | No internal connection; the lower-right lead in the schematic is not wired to the diode. |
| 3 | K | passive | Cathode of the zener diode, the single top lead in the schematic, which goes to the reverse breakdown voltage VZ of 4.4V to 5.0V at IZT = 5mA for the BZX84C4V7W. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener Voltage (min) | VZ | 4.4 |  |  | V | @ IZT = 5.0 mA | 2 |
| Zener Voltage (nominal) | VZ |  | 4.7 |  | V | @ IZT = 5.0 mA | 2 |
| Zener Voltage (max) | VZ |  |  | 5 | V | @ IZT = 5.0 mA | 2 |
| Temperature Coefficient of Zener Voltage |  | -3.5 |  | 0.2 | mV/°C | @ IZT = 5mA | 2 |
| Maximum Zener Impedance | ZZT |  |  | 80 | Ω | @ IZT = 5.0 mA | 2 |
| Maximum Zener Impedance (knee) | ZZK |  |  | 600 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum Reverse Current | IR |  |  | 3 | µA | @ VR = 2.0 V | 2 |
| Forward Voltage | VF |  |  | 0.9 | V | @ IF = 10mA | 1 |
| Power Dissipation | PD |  |  | 200 | mW | Note 3 | 1 |
| Thermal Resistance, Junction to Ambient Air | RθJA |  |  | 625 | K/W | Note 3 | 1 |
| Operating and Storage Temperature Range | TJ, TSTG | -65 |  | 125 | °C |  | 1 |

## 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: Solderable per MIL-STD-202, Method 208 • Lead Free Plating (Matte Tin Finish annealed over Alloy 42 | 1 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `BZX84C4V7W-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323, generated on the KiCad land (body 1.25 x 2.1 mm, terminals on the pads, 0.95 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `bzx84c4v7w-7-f-etched.step` / `bzx84c4v7w-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c4v7w-7-f.step` / `bzx84c4v7w-7-f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/BZX84C4V7W-7-F.pdf) (4 pp, sha256 `d9219bc3aedc6fa2`, retrieved 2026-11-13, tier: manufacturer)
- **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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/bzx84c4v7w-7-f-datasheet.pdf)