# MMSZ4695

**Changjing** · Zener Diodes · SOD-123

MMSZ4695 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 '-', end with the band); positive side in reverse zener operation, with PD 350 mW and TJ/Tstg -55 to +150 ℃. |
| 2 | A | passive | Anode (marked '+', end without the band); 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 |  | 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 |
| Forward voltage | VF |  | 0.9 |  | V | @ IF=10mA | 1 |

## CAD (KiCad official)

- Symbol: `MMSZ4695`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz4695-etched.step` / `mmsz4695-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz4695.step` / `mmsz4695.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/8590201814969843712) (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/mmsz4695-datasheet.pdf)