component
MMSZ33VCW
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.
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MMSZ33VCW
YONGYUTAI · Zener Diodes · SOD-123
MMSZ33VCW 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), min/max range | Vz | 31 | 33 | 35 | V | @ Izt = 2 mA | 2 |
| Maximum Zener impedance | Zzt | 80 | Ω | @ Izt = 2 mA | 2 | ||
| Maximum Zener impedance (knee) | Zzk | 325 | Ω | @ Izk = 0.5 mA | 2 | ||
| Maximum reverse current | IR | 0.1 | uA | at VR = 23.1 V | 2 | ||
| Typical temperature coefficient (min/max) | IZTC | 27.4 | 33.4 | mV/℃ | Test current IZTC = 2 mA | 2 | |
| Power dissipation | Pd | 500 | mW | Ratings at 25℃ ambient temperature | 1 | ||
| Storage temperature range | Ts | -65 | 150 | ℃ | 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 (footnote 1) | 1 | ||
| Forward voltage | Vf | 0.9 | V | @ IF = 10 mA | 1 |
CAD (KiCad official)
- Symbol:
MMSZ33VCW - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz33vcw-etched.step/mmsz33vcw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz33vcw.step/mmsz33vcw.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).
# MMSZ33VCW
**YONGYUTAI** · Zener Diodes · SOD-123
MMSZ33VCW 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), min/max range | Vz | 31 | 33 | 35 | V | @ Izt = 2 mA | 2 |
| Maximum Zener impedance | Zzt | | | 80 | Ω | @ Izt = 2 mA | 2 |
| Maximum Zener impedance (knee) | Zzk | | | 325 | Ω | @ Izk = 0.5 mA | 2 |
| Maximum reverse current | IR | | | 0.1 | uA | at VR = 23.1 V | 2 |
| Typical temperature coefficient (min/max) | IZTC | 27.4 | | 33.4 | mV/℃ | Test current IZTC = 2 mA | 2 |
| Power dissipation | Pd | | | 500 | mW | Ratings at 25℃ ambient temperature | 1 |
| Storage temperature range | Ts | -65 | | 150 | ℃ | | 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 (footnote 1) | 1 |
| Forward voltage | Vf | | 0.9 | | V | @ IF = 10 mA | 1 |
## CAD (KiCad official)
- Symbol: `MMSZ33VCW`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz33vcw-etched.step` / `mmsz33vcw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz33vcw.step` / `mmsz33vcw.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [YONGYUTAI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590215126377787392) (5 pp, sha256 `6a03accc35d17660`, retrieved 2026-10-18, 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](docs/mmsz33vcw-datasheet.pdf)