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BZX84B18-AU
Public Made by Adomby adom
PANJIT International Zener Diodes, SOT-23. 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
markdownBZX84B18-AU
PANJIT International · Zener Diodes · SOT-23
BZX84B18-AU from PANJIT International, in a SOT-23. 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 | A | passive | Anode of the single Zener diode, shown connected to pin 1 in the SINGLE polarity diagram. |
| 2 | NC | unconnected | Not connected to the diode in the SINGLE polarity diagram, which draws the diode between pins 1 and 3 only. |
| 3 | K | passive | Cathode of the single Zener diode, shown connected to pin 3 in the SINGLE polarity diagram. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Nominal Zener Voltage | VZ | 17.64 | 18 | 18.36 | V | @ IZT = 5.0 mA | 2 |
| Maximum Zener Impedance | ZZT | 45 | Ω | @ IZT = 5.0 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 225 | Ω | @ IZK = 1.00 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 0.1 | μA | @ VR = 12.6 V | 2 | ||
| Maximum Power Dissipation | PD | 410 | mW | at 25°C, mounted on 5.0mm2 (.013mm thick) land areas (Note A) | 1 | ||
| Operating Junction and Storage Temperature Range | TJ | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
BZX84B18-AU - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.0 mm tall, datasheet A, midpoint of min and max). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files:
bzx84b18-au-etched.step/bzx84b18-au-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84b18-au.step/bzx84b18-au.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (6 pp, sha256
0f3d674ac5ec45b4, retrieved 2026-11-12, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).