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UDZSTE-174.3B
Public Made by Adomby adom
YONGYUTAI Zener Diodes, SOD-323. 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
markdownUDZSTE-174.3B
YONGYUTAI · Zener Diodes · SOD-323
UDZSTE-174.3B 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 end marked with the color band; connects to the positive side in reverse-biased Zener operation (Vz 4.0V min to 4.6V max at Izt=5mA for the 4.3V nominal part). |
| 2 | A | passive | Anode; the end opposite the color band (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 | Vz | 4 | 4.3 | 4.6 | V | @Izt=5mA | 1 |
| Maximum Zener Impedance | Zzt | 90 | Ω | @Izt=5mA | 1 | ||
| Maximum Zener Impedance (knee) | Zzk | 600 | Ω | @Izk=1.0mA | 1 | ||
| Maximum Reverse Current | IR | 3 | uA | VR=1.0V | 1 | ||
| Temperature Coefficient of Zener Voltage | IZTC | -3.5 | 0 | mV/℃ | Test current 5mA | 1 | |
| Power Dissipation | Pd | 200 | mW | TA=25℃ | 1 | ||
| Storage Temperature Range | Ts | -65 | 150 | ℃ | 1 | ||
| Forward Voltage | Vf | 0.9 | V | IF=10mA | 1 | ||
| Zener Test Current | Izt | 5 | mA | 1 |
CAD (KiCad official)
- Symbol:
UDZSTE-174.3B - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
udzste-174-3b-etched.step/udzste-174-3b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);udzste-174-3b.step/udzste-174-3b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YONGYUTAI datasheet (5 pp, sha256
c72a208771c1ed0c, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).