component
MMSZ20VCW
Public Made by Adomby adom
YONGYUTAI Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownMMSZ20VCW
YONGYUTAI · Zener Diodes · SOD-123
MMSZ20VCW from YONGYUTAI, 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 | 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 | YONGYUTAI |
| 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 Vz (nominal 20 V) | Vz | 18.8 | 20 | 21.2 | V | @ IZT 5 mA | 2 |
| Maximum Zener impedance Zzt | Zzt | 55 | Ω | @ IZT 5 mA | 2 | ||
| Maximum Zener impedance Zzk | Zzk | 225 | Ω | @ IZK 1.0 mA | 2 | ||
| Maximum reverse current IR | IR | 0.1 | uA | @ VR 14.0 V | 2 | ||
| Temperature coefficient (typical, min/max as printed) | 14.4 | 18 | mV/℃ | @ IZTC 5 mA | 2 | ||
| Storage temperature range | Ts | -65 | 150 | ℃ | 1 | ||
| Power dissipation | Pd | 500 | mW | 1 | |||
| Forward voltage | Vf | 0.9 | V | @ IF=10mA | 1 | ||
| Thermal resistance junction to ambient air | RthA | 400 | K/W | Device mounted on ceramic PCB: 7.6mm x 9.4mm x 0.87mm with pad areas 25mm² | 1 |
CAD (KiCad official)
- Symbol:
MMSZ20VCW - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz20vcw-etched.step/mmsz20vcw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz20vcw.step/mmsz20vcw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YONGYUTAI datasheet (5 pp, sha256
6a03accc35d17660, retrieved 2026-10-20, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).