# MM5Z22

**Slkor(SLKORMICRO Elec.)** · Zener Diodes · SOD-523

MM5Z22 from Slkor(SLKORMICRO Elec.), in a SOD-523. 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 of the zener diode; MM5Z22 has a nominal Zener voltage of 22 V (20.8 to 23.3 V) at IZT = 2 mA and leakage of 0.1 µA max at VR = 17 V. |
| 2 | Anode | passive | Anode of the zener diode; forward voltage is 0.9 V max at IF = 10 mA and total device dissipation is 200 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOD-523 |
| 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 | 20.8 | 22 | 23.3 | V | at IZT = 2 mA, tested with pulses tp = 20 ms | 2 |
| Zener Impedance | ZZT |  |  | 55 | Ω | at IZT = 2 mA | 2 |
| Zener Impedance (knee) | ZZK |  |  | 100 | Ω | at IZK = 1 mA | 2 |
| Leakage Current | IR |  |  | 0.1 | µA | at VR = 17 V | 2 |
| Forward Voltage | VF |  |  | 0.9 | V | at IF = 10 mA, Ta = 25 °C | 1 |
| Total Device Dissipation | Ptot |  |  | 200 | mW | Ta = 25 °C | 1 |
| Junction and Storage Temperature Range | Tj, Tstg | -65 |  | 150 | °C | Ta = 25 °C | 1 |

## CAD (KiCad official)

- Symbol: `MM5Z22`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `mm5z22-etched.step` / `mm5z22-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm5z22.step` / `mm5z22.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Slkor(SLKORMICRO Elec.) datasheet](docs/mm5z22-datasheet.pdf) (3 pp, sha256 `dd7ed6552ebefaa6`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/mm5z22-datasheet.pdf)