# MM3Z11-MS

**MSKSEMI** · Zener Diodes · SOD-323

MM3Z11-MS from MSKSEMI, in a SOD-323. 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 | Cathode | passive | Cathode terminal of the zener diode; the datasheet gives no pin-specific electrical limits for this terminal. |
| 2 | Anode | passive | Anode terminal of the zener diode; the datasheet gives no pin-specific electrical limits for this terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOD-323 |
| 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 | VZT | 10.4 | 11 | 11.6 | V | IZT = 5 mA; VZT tested with pulses (20 ms) | 3 |
| Dynamic impedance | ZZT |  |  | 30 | Ω | at IZT = 5 mA | 3 |
| Reverse current | IR |  |  | 0.1 | μA | VR = 8 V | 3 |
| Total power dissipation | Ptot |  |  | 200 | mW |  | 2 |
| Operating and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 2 |
| Thermal resistance, junction to ambient | RθJA |  | 417 |  | °C/W | PCB mounted with 2.0 in x 2.0 in copper pad areas | 2 |
| Zener voltage tolerance (family-wide, approximate) |  | -5 |  | 5 | % |  | 2 |

## CAD (KiCad official)

- Symbol: `MM3Z11-MS`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `mm3z11-ms-etched.step` / `mm3z11-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm3z11-ms.step` / `mm3z11-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603385850763882496) (5 pp, sha256 `ad4064742873770b`, retrieved 2026-10-22, 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/mm3z11-ms-datasheet.pdf)