component
MMSZ9V1CW
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
markdownMMSZ9V1CW
YONGYUTAI · Zener Diodes · SOD-123
MMSZ9V1CW 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) | Vz | 8.5 | 9.1 | 9.6 | V | Izt = 5 mA | 1 |
| Maximum Zener impedance at Izt | Zzt | 15 | Ω | @ Izt = 5 mA | 1 | ||
| Maximum Zener impedance at Izk | Zzk | 100 | Ω | @ Izk = 1.0 mA | 1 | ||
| Maximum reverse current | IR | 0.5 | uA | VR = 6.0 V | 1 | ||
| Temperature coefficient | 3.8 | 7 | mV/℃ | IZTC = 5 mA | 1 | ||
| Power dissipation | Pd | 500 | mW | 1 | |||
| Storage temperature range | Ts | -65 | 150 | ℃ | 1 | ||
| Forward voltage | Vf | 0.9 | V | @IF=10mA | 1 | ||
| Thermal resistance junction to ambient air | RthA | 400 | K/W | 1 |
CAD (KiCad official)
- Symbol:
MMSZ9V1CW - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz9v1cw-etched.step/mmsz9v1cw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz9v1cw.step/mmsz9v1cw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YONGYUTAI datasheet (5 pp, sha256
6a03accc35d17660, retrieved 2026-10-18, 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).