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BZX84C3V9A

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Shandong Jingdao Microelectronics Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 7d ago
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bzx84c3v9a-etched.step bzx84c3v9a: factory component page (tier=lcsc) · Ray 7d ago
bzx84c3v9a-hero.glb bzx84c3v9a: hero GLB from the etched model (keeps the MPN mark) · Ray 7d ago
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BZX84C3V9A

Shandong Jingdao Microelectronics · Zener Diodes · SOT-23

BZX84C3V9A from Shandong Jingdao Microelectronics, 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 (Suffix A), zener voltage 3.82V min to 3.98V max at IZT for the 3.9V grade.
2 NC unconnected No internal connection in the Suffix A single-diode configuration; the package drawing shows no diode connected to pin 2.
3 K passive Cathode of the single zener diode (Suffix A), which sits at the positive voltage in zener reverse operation; maximum power dissipation is 350mW.

Key specifications

Parameter Value
Manufacturer Shandong Jingdao Microelectronics
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
Zener voltage VZT (C3V9A, C-series ±5%) VZT 3.7 3.9 4.1 V IZT = 5 mA; VZT tested with pulses (20 ms) 3
Tolerance (C series) -5 5 % C suffix in BZX84C3V9A = ±5% 3
Dynamic impedance ZZT max ZZT 130 Ω at IZT = 5 mA 3
Reverse current IR max IR 5 μA at VR = 1 V 3
Power dissipation (total) Ptot 350 mW 1
Operating and storage temperature range Tj, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: BZX84C3V9A
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bzx84c3v9a-etched.step / bzx84c3v9a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx84c3v9a.step / bzx84c3v9a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256 abb7c0e41de9a21a, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF