# MM3Z11VST1G

**onsemi** · Zener Diodes · SOD-323

MM3Z11VST1G from onsemi, 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, identified on the package by the polarity band (SOD-323 Style 1). The datasheet gives no pin-specific electrical limits; device ratings apply (300 mW total dissipation, Tj/Tstg -65 to +150 °C). |
| 2 | Anode | passive | Anode terminal of the Zener diode (SOD-323 Style 1). The datasheet gives no pin-specific electrical limits; device ratings apply (300 mW total dissipation, Tj/Tstg -65 to +150 °C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 10.78 |  | 11.22 | V | IZT = 5.0 mA (test current column) | 3 |
| Forward Voltage | VF |  |  | 0.9 | V | IF = 10 mA | 2 |
| Maximum Zener Impedance @ IZT | ZZT |  |  | 20 | Ω | IZ = IZT | 3 |
| Maximum Zener Impedance @ IZK | ZZK |  |  | 160 | Ω | IZ = 0.5 mA | 3 |
| Reverse Leakage Current | IR |  |  | 0.1 | µA | VR = 8.0 V | 3 |
| Maximum Temperature Coefficient of VZ (lower limit) | dVZ/dt | 5.4 |  |  | mV/k | Printed as Min column; test current IZT1 = 5 mA | 3 |
| Maximum Temperature Coefficient of VZ (upper limit) | dVZ/dt |  |  | 9 | mV/k | Printed as Max column; test current IZT1 = 5 mA | 3 |
| Maximum Capacitance | C |  |  | 130 | pF | VR = 0, f = 1 MHz | 3 |
| Total Device Dissipation FR-4 Board, TA = 25°C | PD |  |  | 300 | mW | TA = 25°C, FR-4 board, mounting pad 1 cm2 (Note 1) | 2 |
| Thermal Resistance from Junction-to-Ambient | RJA |  |  | 416 | °C/W |  | 2 |
| Junction and Storage Temperature Range | TJ, Tstg | -65 |  | 150 | °C |  | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | LEADS: Plated with Pb−Sn or Sn only (Pb−Free) POLARITY: Cathode indicated by polarity band | 1 |

## CAD (KiCad official)

- Symbol: `MM3Z11VST1G`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `mm3z11vst1g-etched.step` / `mm3z11vst1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm3z11vst1g.step` / `mm3z11vst1g.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/8589986526278160384) (6 pp, sha256 `6327225eeeaa38aa`, 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/mm3z11vst1g-datasheet.pdf)