component
PZU18B
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
markdownPZU18B
Nexperia · Zener Diodes · SOD-323F
PZU18B 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; the marking bar indicates the cathode, and the cathode mounting pad (1 cm²) sets Ptot up to 550 mW. |
| 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 | 16.94 | 19.03 | V | IZ = 5 mA; Tj = 25 °C; PZU18B | 6 | |
| Maximum differential resistance | rdif | 80 | Ω | IZ = 0.5 mA | 6 | ||
| Maximum differential resistance | rdif | 20 | Ω | IZ = 5 mA | 6 | ||
| Reverse current | IR | 50 | nA | VR = 13 V | 6 | ||
| Diode capacitance | Cd | 93 | pF | f = 1 MHz; VR = 0 V | 6 | ||
| Non-repetitive peak reverse current | IZSM | 1.5 | A | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 6 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA | 3 | ||
| Forward voltage | VF | 1.1 | V | IF = 100 mA | 3 | ||
| Forward current | IF | 200 | 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 | 310 | mW | Tamb ≤ 25 °C; FR4 PCB, standard footprint | 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 | -65 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 400 | K/W | in free air; FR4 PCB, standard footprint | 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 | soldering point of cathode tab | 3 | ||
| Temperature coefficient | SZ | 14.4 | mV/K | IZ = 5 mA | 6 |
CAD (KiCad official)
- Symbol:
PZU18B - Footprint:
Diode_SMD:D_SOD-323F - 3D model: SOD-323F (KiCad packages3D, STEP)
- 3D model files:
pzu18b-etched.step/pzu18b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pzu18b.step/pzu18b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (12 pp, sha256
c7a98725101c64b4, 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).