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UDZSTE-178.2B

Public Made by Adom

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YONGYUTAI Zener Diodes, SOD-323. 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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UDZSTE-178.2B

YONGYUTAI · Zener Diodes · SOD-323

UDZSTE-178.2B from YONGYUTAI, in a SOD-323. 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 color-band end of the SOD-323 package (marked "-" in the outline drawing); Zener voltage 8.2V nominal (7.7V to 8.7V) at Izt=5mA.
2 A passive Anode, the end opposite the color band (marked "+" in the outline drawing); forward voltage 0.9V at IF=10mA.

Key specifications

Parameter Value
Manufacturer YONGYUTAI
Package SOD-323
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 (nominal 8.2 V) Vz 7.7 8.2 8.7 V Izt = 5 mA 1
Maximum Zener impedance Zzt 15 Ω @ Izt = 5 mA 1
Maximum Zener impedance (knee) Zzk 80 Ω @ Izk = 1.0 mA 1
Maximum reverse current IR 0.7 uA @ VR = 5.0 V 1
Temperature coefficient of Zener voltage 3.2 6.2 mV/℃ @ IZTC = 5 mA 1
Power dissipation Pd 200 mW 1
Storage temperature range Ts -65 150 ℃ 1
Forward voltage Vf 0.9 V @IF=10mA 1

CAD (KiCad official)

  • Symbol: UDZSTE-178.2B
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: udzste-178-2b-etched.step / udzste-178-2b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); udzste-178-2b.step / udzste-178-2b.glb are the bare package body.

Provenance

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

  • Datasheet: YONGYUTAI datasheet (5 pp, sha256 c72a208771c1ed0c, retrieved 2026-11-07, 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