# MMSZ8V2ET1G

**onsemi** · Zener Diodes · SOD-123

MMSZ8V2ET1G from onsemi, in a SOD-123. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode of the Zener diode. Indicated by the polarity band on the package. Reverse-bias current flows into this pin during Zener regulation at VZ = 8.2 V nominal. |
| 2 | A | passive | Anode of the Zener diode. Forward current flows into this pin (VF ≤ 0.9 V at IF = 10 mA); returns Zener current to circuit ground during reverse regulation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-123 |
| Category | Diodes |
| Pins | 2 |

## Ordering variants

Same part, different packaging or reel option.

- `MMSZ8V2ET1G`
- `MMSZ8V2ET1GSZMMSZ8V2ET1G`
- `MMSZ8V2ET3G`

## CAD (KiCad official)

- Symbol: `MMSZ8V2ET1G`
- Footprint: `Diode_SMD:D_SOD-123`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `mmsz8v2et1g-etched.step` / `mmsz8v2et1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmsz8v2et1g.step` / `mmsz8v2et1g.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589981324447543296) (7 pp, sha256 `5b0b972b33dc1e88`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/mmsz8v2et1g-datasheet.pdf)