# BZX384-B2V4

**Nexperia** · Zener Diodes · SOD-323(SC-76)

BZX384-B2V4 from Nexperia, in a SOD-323(SC-76). 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 terminal of the voltage regulator diode, indicated by the marking bar on the package. |
| 2 | A | passive | Anode terminal of the voltage regulator diode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323(SC-76) |
| 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 |
|---|---|---|---|---|---|---|---|
| Working voltage tolerance (B selection) |  | -2 |  | 2 | % |  | 1 |
| Working voltage VZ (B, BZX384-B2V4) | VZ | 2.35 |  | 2.45 | V | IZ = 5 mA | 5 |
| Maximum differential resistance rdif | rdif |  |  | 600 | Ω | IZ = 1 mA | 5 |
| Maximum differential resistance rdif | rdif |  |  | 100 | Ω | IZ = 5 mA | 5 |
| Reverse current IR | IR |  |  | 50 | μA | VR = 1 V | 5 |
| Temperature coefficient SZ | SZ | -3.5 |  | 0 | mV/K | IZ = 5 mA | 5 |
| Diode capacitance Cd | Cd |  |  | 450 | pF | f = 1 MHz; VR = 0 V | 5 |
| Non-repetitive peak reverse current IZSM | IZSM |  |  | 6 | A | tp = 100 μs; square wave; Tj = 25 °C | 5 |
| Forward voltage VF | VF |  |  | 0.9 | V | IF = 10 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02 | 4 |
| Forward voltage VF | VF |  |  | 1.1 | V | IF = 100 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02 | 4 |
| Forward current IF | IF |  |  | 250 | mA |  | 4 |
| Non-repetitive peak reverse power dissipation PZSM | PZSM |  |  | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 4 |
| Total power dissipation Ptot | Ptot |  |  | 300 | mW | Tamb ≤ 25 °C; device mounted on FR4 PCB | 4 |
| Junction temperature Tj | Tj |  |  | 150 | °C |  | 4 |
| Ambient temperature Tamb | Tamb | -65 |  | 150 | °C |  | 4 |
| Storage temperature Tstg | Tstg | -65 |  | 150 | °C |  | 4 |
| Thermal resistance junction to ambient Rth(j-a) | Rth(j-a) |  |  | 415 | K/W | in free air; device mounted on FR4 PCB | 4 |
| Thermal resistance junction to solder point Rth(j-sp) | Rth(j-sp) |  |  | 110 | K/W | soldering point of cathode tab | 4 |

## CAD (KiCad official)

- Symbol: `BZX384-B2V4`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323(SC-76) (KiCad packages3D, STEP)
- 3D model files: `bzx384-b2v4-etched.step` / `bzx384-b2v4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx384-b2v4.step` / `bzx384-b2v4.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/BZX384-B2V4.pdf) (14 pp, sha256 `a381ee1ec1ad5a2b`, retrieved 2026-10-26, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/bzx384-b2v4-datasheet.pdf)