# GBU2008

**Changjing** · Bridge Rectifiers · GBU

GBU2008 from Changjing, 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 | Positive DC output terminal of the bridge rectifier, marked + on the package outline (leftmost lead). |
| 2 | AC1 | passive | AC input terminal of the single-phase bridge (second lead from the + end); the drawing does not label it. |
| 3 | AC2 | passive | AC input terminal of the single-phase bridge (third lead, next to the - end); the drawing does not label it. |
| 4 | - | passive | Negative DC output terminal of the bridge rectifier, marked - on the package outline (rightmost lead). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Average Rectified Output Current (with heatsink) | IO |  |  | 20 | A | 60Hz sine wave, R-load, With heatsink Tc =98℃ | 1 |
| Average Rectified Output Current (without heatsink) | IO |  |  | 3.6 | A | 60Hz sine wave, R-load, Without heatsink Ta =25℃ | 1 |
| Surge (Non-repetitive) Forward Current | IFSM |  |  | 260 | A | 60HZ sine wave, 1 cycle, Tj=25℃ | 1 |
| Current Squared Time | I2t |  |  | 280 | A2S | 1ms≤t<8.3ms Tj=25℃, Rating of per diode | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction Temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Dielectric Strength | Vdis |  |  | 2.5 | KV | Terminals to case, AC 1 minute | 1 |
| Mounting Torque | Tor |  |  | 8 | kg·cm | Recommend torque: 5kg·cm | 1 |
| Peak Forward Voltage | VFM |  |  | 1.1 | V | IFM=10.0A, Pulse measurement, Rating of per diode | 1 |
| Peak Reverse Current | IRRM |  |  | 10 | μA | VRM=VRRM, Pulse measurement, Rating of per diode | 1 |
| Thermal Resistance Junction to Ambient | RθJ-A |  |  | 22 | ℃/W | Between junction and ambient, Without heatsink | 1 |
| Thermal Resistance Junction to Case | RθJ-C |  |  | 1 | ℃/W | Between junction and case, With heatsink | 1 |
| Repetitive Peak Reverse Voltage (GBU2008 column) | VRRM |  |  | 800 | V |  | 1 |
| Maximum RMS Voltage (GBU2008 column) | VRMS |  |  | 560 | V |  | 1 |

## CAD (KiCad official)

- Symbol: `GBU2008`
- Footprint: `Diode_THT:Diode_Bridge_Vishay_GBU`
- 3D model: GBU (KiCad packages3D, STEP)
- 3D model files: `gbu2008-etched.step` / `gbu2008-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gbu2008.step` / `gbu2008.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603157580961095680) (3 pp, sha256 `a0f046e019a4b384`, 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/gbu2008-datasheet.pdf)