# DZL4742

**LGE** · Zener Diodes · SOD-123FL

DZL4742 from LGE, 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| 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 VZ (DZL4742, 12 V type) | VZ | 11.4 | 12 | 12.6 | Volts | TA = 25 °C; IZT = 21 mA | 2 |
| Power dissipation | PW |  |  | 1 |  | TA = 25 °C unless otherwise noted | 1 |
| Junction temperature | TJ |  |  | 150 | °C | TA = 25 °C unless otherwise noted | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | °C | TA = 25 °C unless otherwise noted | 1 |
| Zener impedance ZZT | ZZT |  | 9 |  | Ω | @IZT = 21 mA | 2 |
| Zener impedance ZZK | ZZK |  | 700 |  | Ω | @IZK = 0.25 mA | 2 |
| Leakage current IR | IR |  | 5 |  | uA | @VR = 9.1 V | 2 |

## CAD (KiCad official)

- Symbol: `DZL4742`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `dzl4742-etched.step` / `dzl4742-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dzl4742.step` / `dzl4742.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590197698000826368) (2 pp, sha256 `444e004435a983e6`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/dzl4742-datasheet.pdf)