component
MM1W22
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hongjiacheng Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MM1W22
hongjiacheng · Zener Diodes · SOD-123
MM1W22 from hongjiacheng, 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, marked by the cathode line on the package; the Zener (reverse) voltage VZ is 20.8 V min, 22 V nom, 23.3 V max at IZT = 12 mA for the MM1W22. |
| 2 | A | passive | Anode terminal of the Zener diode; forward voltage VF is 1.2 V at IF = 200 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Zener impedance | ZZT | 23 | Ω | @ IZT=12 mA | 2 | ||
| Reverse leakage current | IR | 5 | μA | @ VR=17 V | 2 | ||
| Power dissipation | PD | 1000 | mW | Tc=75℃ | 1 | ||
| Forward voltage | VF | 1.2 | V | @ IF=200mA | 1 | ||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Junction temperature | Tj | -55 | 150 | ℃ | 1 | ||
| Typical thermal resistance, junction to ambient | RθJ-A | 375 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
MM1W22 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mm1w22-etched.step/mm1w22-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm1w22.step/mm1w22.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (4 pp, sha256
cf075e0c300108c6, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# MM1W22
**hongjiacheng** · Zener Diodes · SOD-123
MM1W22 from hongjiacheng, 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, marked by the cathode line on the package; the Zener (reverse) voltage VZ is 20.8 V min, 22 V nom, 23.3 V max at IZT = 12 mA for the MM1W22. |
| 2 | A | passive | Anode terminal of the Zener diode; forward voltage VF is 1.2 V at IF = 200 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Zener impedance | ZZT | | | 23 | Ω | @ IZT=12 mA | 2 |
| Reverse leakage current | IR | | | 5 | μA | @ VR=17 V | 2 |
| Power dissipation | PD | | | 1000 | mW | Tc=75℃ | 1 |
| Forward voltage | VF | | | 1.2 | V | @ IF=200mA | 1 |
| Storage temperature | Tstg | -55 | | 150 | ℃ | | 1 |
| Junction temperature | Tj | -55 | | 150 | ℃ | | 1 |
| Typical thermal resistance, junction to ambient | RθJ-A | | 375 | | ℃/W | | 1 |
## CAD (KiCad official)
- Symbol: `MM1W22`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mm1w22-etched.step` / `mm1w22-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm1w22.step` / `mm1w22.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [hongjiacheng datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755885596923437056) (4 pp, sha256 `cf075e0c300108c6`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/mm1w22-datasheet.pdf)