# MUR840

**LGE** · Fast Recovery / High Efficiency Diodes · TO-220AC

MUR840 from LGE, in a TO-220AC. 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 terminal, internally connected to the case/tab; the diagram shows pin 1 tied to the cathode side of the diode symbol. |
| 2 | A | passive | Anode terminal; the package diagram shows the diode symbol with its anode on pin 2 and its cathode toward the case. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | TO-220AC |
| 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 recurrent peak reverse voltage | VRRM |  |  | 400 | V |  | 1 |
| Maximum RMS voltage | VRMS |  |  | 280 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 400 | V |  | 1 |
| Maximum average forward rectified current | I(AV) |  |  | 8 | A | total device (rated VR), TC=150 | 1 |
| Peak forward surge current | IFSM |  |  | 50 | A | 8.3ms single half-sine-wave superimposed on rated load | 1 |
| Operating junction temperature range | Tj | -65 |  | 175 | °C |  | 1 |
| Storage temperature range | TSTG | -65 |  | 175 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `MUR840`
- Footprint: `Package_TO_SOT_THT:TO-220-2_Vertical`
- 3D model: TO-220AC (KiCad packages3D, STEP)
- 3D model files: `mur840-etched.step` / `mur840-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mur840.step` / `mur840.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/8590456882235682816) (2 pp, sha256 `d69a7f161afcf91e`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/mur840-datasheet.pdf)