component
BZX84J-B12
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Nexperia Zener Diodes, SOD-323F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZX84J-B12
Nexperia · Zener Diodes · SOD-323F
BZX84J-B12 from Nexperia, in a SOD-323F. 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 of the Zener diode, identified by the marking bar on the package. |
| 2 | A | passive | Anode of the Zener diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323F |
| 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 | VZ | 11.8 | 12.2 | V | IZ = 5 mA, Tj = 25 °C | 4 | |
| Differential resistance (IZ = 5 mA) | rdif | 150 | Ω | IZ = 5 mA | 4 | ||
| Differential resistance (IZ = 1 mA) | rdif | 10 | Ω | IZ = 1 mA | 4 | ||
| Reverse current | IR | 0.1 | µA | VR = 8 V | 4 | ||
| Temperature coefficient of working voltage | SZ | 6 | 10 | mV/K | IZ = 5 mA | 4 | |
| Non-repetitive peak reverse current | IZSM | 2.5 | A | tp = 100 µs; square wave; Tj = 25 °C prior to surge | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA | 3 | ||
| Forward voltage | VF | 1.1 | V | IF = 100 mA | 3 | ||
| Forward current | IF | 250 | mA | 3 | |||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 µs; square wave; Tj = 25 °C prior to surge | 3 | ||
| Total power dissipation | Ptot | 550 | mW | Tamb ≤ 25 °C | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance junction to ambient | Rth(j-a) | 230 | K/W | in free air | 3 | ||
| Thermal resistance junction to solder point | Rth(j-sp) | 55 | K/W | 3 |
CAD (KiCad official)
- Symbol:
BZX84J-B12 - Footprint:
Diode_SMD:D_SOD-323F - 3D model: SOD-323F (KiCad packages3D, STEP)
- 3D model files:
bzx84j-b12-etched.step/bzx84j-b12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84j-b12.step/bzx84j-b12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
fcfb79c5f982558d, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-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).
# BZX84J-B12
**Nexperia** · Zener Diodes · SOD-323F
BZX84J-B12 from Nexperia, in a SOD-323F. 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 of the Zener diode, identified by the marking bar on the package. |
| 2 | A | passive | Anode of the Zener diode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323F |
| 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 | VZ | 11.8 | | 12.2 | V | IZ = 5 mA, Tj = 25 °C | 4 |
| Differential resistance (IZ = 5 mA) | rdif | | | 150 | Ω | IZ = 5 mA | 4 |
| Differential resistance (IZ = 1 mA) | rdif | | | 10 | Ω | IZ = 1 mA | 4 |
| Reverse current | IR | | | 0.1 | µA | VR = 8 V | 4 |
| Temperature coefficient of working voltage | SZ | 6 | | 10 | mV/K | IZ = 5 mA | 4 |
| Non-repetitive peak reverse current | IZSM | | | 2.5 | A | tp = 100 µs; square wave; Tj = 25 °C prior to surge | 4 |
| Forward voltage | VF | | | 0.9 | V | IF = 10 mA | 3 |
| Forward voltage | VF | | | 1.1 | V | IF = 100 mA | 3 |
| Forward current | IF | | | 250 | mA | | 3 |
| Non-repetitive peak reverse power dissipation | PZSM | | | 40 | W | tp = 100 µs; square wave; Tj = 25 °C prior to surge | 3 |
| Total power dissipation | Ptot | | | 550 | mW | Tamb ≤ 25 °C | 3 |
| Junction temperature | Tj | | | 150 | °C | | 3 |
| Ambient temperature | Tamb | -55 | | 150 | °C | | 3 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 3 |
| Thermal resistance junction to ambient | Rth(j-a) | | | 230 | K/W | in free air | 3 |
| Thermal resistance junction to solder point | Rth(j-sp) | | | 55 | K/W | | 3 |
## CAD (KiCad official)
- Symbol: `BZX84J-B12`
- Footprint: `Diode_SMD:D_SOD-323F`
- 3D model: SOD-323F (KiCad packages3D, STEP)
- 3D model files: `bzx84j-b12-etched.step` / `bzx84j-b12-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84j-b12.step` / `bzx84j-b12.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/BZX84J-B12.pdf) (13 pp, sha256 `fcfb79c5f982558d`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/bzx84j-b12-datasheet.pdf)