component
BZT52C18V
Public Made by Adomby adom
LangJie Zener Diodes, SOD-123. 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
markdownBZT52C18V
LangJie · Zener Diodes · SOD-123
BZT52C18V from LangJie, in a SOD-123. 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 terminal of the Zener diode in the SOD-123 package, with the datasheet's peak repetitive reverse voltage (VRRM) and 500 mW power dissipation on ceramic PCB limits applying to the device. |
| 2 | Anode | passive | Anode terminal of the Zener diode in the SOD-123 package, with the datasheet's peak repetitive reverse voltage (VRRM) and 500 mW power dissipation on ceramic PCB limits applying to the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LangJie |
| Package | SOD-123 |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (BZT52C18) | VZT | 16.8 | 18 | 19.1 | V | at IZT = 5 mA; pulse 20 ms (note 3) | 2 |
| Maximum Zener impedance | ZZT | 45 | Ω | @ IZT = 5 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 225 | Ω | @ IZK = 1 mA | 2 | ||
| Reverse current | IR | 0.1 | μA | @ VR = 14.0 V (verify column alignment) | 2 | ||
| Maximum forward voltage | VF | 900 | mV | @ 10 mA | 1 | ||
| Power dissipation | PD | 0.5 | W | 1 | |||
| Storage temperature range | Tstg | -55 | 150 | ℃ | 1 | ||
| Operating junction temperature | Tj | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
BZT52C18V - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52c18v-etched.step/bzt52c18v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c18v.step/bzt52c18v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LangJie datasheet (4 pp, sha256
5c60e91d268d19b3, retrieved 2026-10-18, tier: lcsc) - 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).