component
BZX38450-C4V7X
Public Made by Adomby adom
Nexperia Zener Diodes, SOD-323. 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
markdownBZX38450-C4V7X
Nexperia · Zener Diodes · SOD-323
BZX38450-C4V7X from Nexperia, in a SOD-323. 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; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the voltage regulator diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| forward voltage | VF | 0.9 | V | IF = 10 mA; pulse test: tp ≤ 300 μs; δ ≤ 0.02 | 4 | ||
| working voltage | VZ | 4.47 | 4.94 | V | IZ = 50 µA | 4 | |
| differential resistance | rdiff | 600 | Ω | IZ = 50 µA | 4 | ||
| differential resistance | rdiff | 80 | Ω | IZ = 1 mA | 4 | ||
| temperature coefficient | SZ | -2.7 | 2.5 | mV/K | 4 | ||
| diode capacitance | Cd | 140 | pF | f = 1 MHz; VR = 0 V | 4 | ||
| 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 | 300 | mW | Tamb ≤ 25 °C; device mounted on FR4 PCB, single sided copper, tin-plated, standard footprint | 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) | 415 | K/W | in free air; device mounted on FR4 PCB, single sided copper, tin-plated, standard footprint | 3 | ||
| thermal resistance from junction to solder point | Rth(j-sp) | 110 | K/W | soldering point of cathode tab | 3 |
CAD (KiCad official)
- Symbol:
BZX38450-C4V7X - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
bzx38450-c4v7x-etched.step/bzx38450-c4v7x-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx38450-c4v7x.step/bzx38450-c4v7x.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (10 pp, sha256
0d3347ab93ca309a, retrieved 2026-11-05, 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).