component

BZX584C3V9Q

Public Made by Adom

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Yangzhou Yangjie Elec Tech Zener Diodes, SOD-523(SC-79). Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention, KiCad symbol/footprint/3D.

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bzx584c3v9q-etched.step bzx584c3v9q: factory component page (tier=lcsc) · Ray
bzx584c3v9q-hero.glb bzx584c3v9q: hero GLB from the etched model (keeps the MPN mark) · Ray
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package.json Brief: a diode is polarised (pin 1 = cathode); the "Unpolarised two-terminal part" sentence was wrong · Ray
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BZX584C3V9Q

Yangzhou Yangjie Elec Tech · Zener Diodes · SOD-523(SC-79)

BZX584C3V9Q from Yangzhou Yangjie Elec Tech, in a SOD-523(SC-79). 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
Package SOD-523(SC-79)
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 VZ 3.7 3.9 4.1 V Izt = 5 mA 2
Zener voltage tolerance -5 5 % approximately (as printed) 1
Zener dynamic impedance ZZT 90 Ω IZT = 5 mA 2
Zener dynamic impedance at knee ZZK 600 Ω IZK = 1.0 mA 2
Reverse leakage current IR 3 μA VR = 1.0 V 2
Typical temperature coefficient -3.5 0 mV/℃ IZTC = 5 mA 2
Maximum forward voltage VF 0.9 V IF = 10 mAdc 1
Power dissipation PD 250 mW Ta = 25℃ unless otherwise specified 1
Storage temperature range Tstg -55 150 °C 1
Junction temperature TJ -55 150 °C 1
Thermal resistance junction to ambient air RθJA 500 °C/W 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing black 4. Body color: Black 5
contacts tin ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 1

CAD (KiCad official)

  • Symbol: BZX584C3V9Q
  • Footprint: Diode_SMD:D_SOD-523
  • 3D model: SOD-523(SC-79) (KiCad packages3D, STEP)
  • 3D model files: bzx584c3v9q-etched.step / bzx584c3v9q-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx584c3v9q.step / bzx584c3v9q.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (6 pp, sha256 c4ab17363f7c9534, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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