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BZT52C18V

Public Made by Adom

by adom

LangJie Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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BZT52C18V

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzt52c18v.step / bzt52c18v.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF