component
BZX84J-B18
Public Made by Adomby adom
Nexperia Zener Diodes, SOD-323F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBZX84J-B18
Nexperia · Zener Diodes · SOD-323F
BZX84J-B18 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 | cathode | passive | Cathode of the Zener diode, identified by the marking bar on the package. |
| 2 | anode | passive | Anode of the Zener diode; the datasheet states no further pin-specific limits for this terminal. |
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 | 17.6 | 18.4 | V | IZ = 5 mA | 5 | |
| differential resistance | rdif | 225 | Ω | IZ = 5 mA | 5 | ||
| differential resistance | rdif | 20 | Ω | IZ = 1 mA | 5 | ||
| reverse current | IR | 0.05 | A | VR = 12.6 V | 5 | ||
| temperature coefficient | SZ | 12.4 | 16 | mV/K | IZ = 5 mA | 5 | |
| diode capacitance | Cd | 93 | pF | f = 1 MHz; VR = 0 V | 5 | ||
| non-repetitive peak reverse current | IZSM | 1.5 | A | tp = 100 µs; square wave; Tj = 25 °C prior to surge | 5 | ||
| 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; FR4 PCB, mounting pad for cathode 1 cm2 | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 230 | K/W | in free air; FR4 PCB, mounting pad for cathode 1 cm2 | 3 | ||
| thermal resistance from junction to solder point | Rth(j-sp) | 55 | K/W | junction to solder point, cathode tab | 3 |
CAD (KiCad official)
- Symbol:
BZX84J-B18 - Footprint:
Diode_SMD:D_SOD-323F - 3D model: SOD-323F (KiCad packages3D, STEP)
- 3D model files:
bzx84j-b18-etched.step/bzx84j-b18-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84j-b18.step/bzx84j-b18.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
fcfb79c5f982558d, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).