# GBU25M

**LGE** · Bridge Rectifiers · GBU

GBU25M from LGE, in a GBU. 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 | - | passive | DC negative output of the bridge, marked "-" on the leftmost lead of the package drawing. |
| 2 | AC1 | passive | AC input terminal, marked "AC" on the package drawing; the bridge is rated for 1000 V VRRM and 700 V VRMS (GBU25M). |
| 3 | AC2 | passive | Second AC input terminal, marked "AC" on the package drawing; the bridge is rated for 25 A average forward output current at TC=100°C. |
| 4 | + | passive | DC positive output of the bridge, marked "+" on the rightmost lead of the package drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | GBU |
| Category | Diodes |
| Pins | 4 |

## 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 |  |  | 1000 | V |  | 1 |
| Maximum RMS voltage | VRMS |  |  | 700 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 1000 | V |  | 1 |
| Maximum average forward output current | IF(AV) |  |  | 25 | A | @TC=100℃ | 1 |
| Peak forward surge current | IFSM |  |  | 300 | A | 8.3ms single half-sine-wave superimposed on rated load | 1 |
| Operating junction temperature range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 1.1 | V | @12.5A | 1 |
| Maximum reverse current at rated DC blocking voltage | IR |  |  | 5 | μA | @TA=25℃ at rated DC blocking voltage | 1 |
| Maximum reverse current at rated DC blocking voltage | IR |  |  | 500 | μA | @TA=125℃ at rated DC blocking voltage | 1 |
| I²t rating for fusing | I²t |  |  | 373 | A²S | @Tj=25℃ | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | 2. Units mounted in free air, no heat sink on P.C.B., 0.5x0.5"(12x12mm) copper pads, 0.375"(9.5mm) lead length. | 1 |

## CAD (KiCad official)

- Symbol: `GBU25M`
- Footprint: `Diode_THT:Diode_Bridge_Vishay_GBU`
- 3D model: GBU (KiCad packages3D, STEP)
- 3D model files: `gbu25m-etched.step` / `gbu25m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gbu25m.step` / `gbu25m.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/8588897769990209536) (2 pp, sha256 `c171510fdb3e2d80`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/gbu25m-datasheet.pdf)