component
MMSZ4704
Public Made by Adomby adom
Changjing Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MMSZ4704
Changjing · Zener Diodes · SOD-123
MMSZ4704 from Changjing, 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 with band, shown as "-"); reverse zener voltage VZ is measured at IZT here, with power dissipation limited to 350 mW. |
| 2 | A | passive | Anode (unbanded end, shown as "+"); forward voltage VF is 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Dissipation | PD | 350 | mW | Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 | 1 | ||
| Forward voltage | VF | 0.9 | V | IF=10mA | 1 | ||
| Thermal Resistance, Junction to Ambient Air | RθJA | 357 | ℃/W | Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 | 1 | ||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
MMSZ4704 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz4704-etched.step/mmsz4704-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz4704.step/mmsz4704.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
70f51aea6c7fa28d, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# MMSZ4704
**Changjing** · Zener Diodes · SOD-123
MMSZ4704 from Changjing, 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 with band, shown as "-"); reverse zener voltage VZ is measured at IZT here, with power dissipation limited to 350 mW. |
| 2 | A | passive | Anode (unbanded end, shown as "+"); forward voltage VF is 0.9 V at IF = 10 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Dissipation | PD | | | 350 | mW | Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 | 1 |
| Forward voltage | VF | | | 0.9 | V | IF=10mA | 1 |
| Thermal Resistance, Junction to Ambient Air | RθJA | | | 357 | ℃/W | Device mounted on ceramic PCB; 5.0mm×7.0mm with pad areas 35 mm2 | 1 |
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `MMSZ4704`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz4704-etched.step` / `mmsz4704-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz4704.step` / `mmsz4704.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590202150744715264) (4 pp, sha256 `70f51aea6c7fa28d`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/mmsz4704-datasheet.pdf)