# MM1W5V1L

**Shandong Jingdao Microelectronics** · Zener Diodes · SOD-123FL

MM1W5V1L from Shandong Jingdao Microelectronics, in a SOD-123FL. 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, per the PINNING table and the symbol on the outline drawing (pin 1 = cathode, pin 2 = anode). |
| 2 | Anode | passive | Anode terminal of the Zener diode, per the PINNING table and the symbol on the outline drawing (pin 2 = anode). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SOD-123FL |
| 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 at IZT | VZT | 4.84 | 5.1 | 5.36 | V | at IZT = 49 mA; tested with pulses (20 ms) | 2 |
| Dynamic impedance at IZT | ZZT |  |  | 7 | Ω | at IZT = 49 mA | 2 |
| Reverse current | IR |  |  | 10 | μA | at VR = 1 V | 2 |
| Admissible Zener current | IZM |  |  | 186 | mA |  | 2 |
| Power dissipation | PD |  |  | 1 | W | at TL = 75°C | 1 |
| Operating and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Forward voltage | VF |  | 1.2 |  | V | at IF = 200 mA | 1 |
| Thermal resistance, junction to ambient | RθJA |  | 55 |  | °C/W | junction to ambient, PCB mounted with 2.0" x 2.0" (5 x 5 cm) copper pads | 1 |

## CAD (KiCad official)

- Symbol: `MM1W5V1L`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `mm1w5v1l-etched.step` / `mm1w5v1l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mm1w5v1l.step` / `mm1w5v1l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/mm1w5v1l-datasheet.pdf) (3 pp, sha256 `3c58e56571a87a99`, 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/mm1w5v1l-datasheet.pdf)