# US3M

**LGE** · Diodes - Fast Recovery Rectifiers · SMC

US3M from LGE, in a SMC. 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 | SMC |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM |  |  | 1000 | V | Ratings at 25°C ambient temperature | 1 |
| Maximum RMS voltage | VRWS |  |  | 700 | V | Ratings at 25°C ambient temperature | 1 |
| Maximum DC blocking voltage | VDC |  |  | 1000 | V | Ratings at 25°C ambient temperature | 1 |
| Maximum average forward rectified current | IF(AV) |  |  | 3 | A | TL=110°C | 1 |
| Operating temperature range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | °C |  | 1 |
| Maximum thermal resistance, junction to ambient | RθJA |  |  | 25 | °C/W | NOTE 1: P.C.B. mounted on 0.2x0.2" (5.0x5.0mm) copper pad area | 1 |

## CAD (KiCad official)

- Symbol: `US3M`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `us3m-etched.step` / `us3m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `us3m.step` / `us3m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](docs/us3m-datasheet.pdf) (2 pp, sha256 `ebfaaee4a2d90d43`, retrieved 2026-10-21, 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/us3m-datasheet.pdf)