# GBU1508A

**Yangzhou Yangjie Elec Tech** · Bridge Rectifiers · GBU

GBU1508A from Yangzhou Yangjie Elec Tech, 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 | - | power_out | Negative DC output of the bridge rectifier, marked '-' on the body; average rectified output current is 15.0 A with heatsink (Tc=100°C) and 3.2 A without (Ta=25°C). |
| 2 | AC1 | passive | AC input terminal, marked 'AC' on the body; the repetitive peak reverse voltage of the GBU1508A is 800 V. |
| 3 | AC2 | passive | Second AC input terminal, marked 'AC' on the body; surge (non-repetitive) forward current is 220 A at 60 Hz half sine wave, 1 cycle, Tj=25°C. |
| 4 | + | power_out | Positive DC output of the bridge rectifier, marked '+' on the body; maximum forward voltage drop per diode is 1.00 V at IFM=7.5 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak reverse voltage | VRRM |  |  | 800 | V |  | 1 |
| Average rectified output current, with heatsink | IO |  |  | 15 | A | @60Hz sine wave, R-load, Tc =100℃ | 1 |
| Average rectified output current, without heatsink | IO |  |  | 3.2 | A | @60Hz sine wave, R-load, Ta =25℃ | 1 |
| Surge (non-repetitive) forward current | IFSM |  |  | 220 | A | @60Hz half sine wave, 1 cycle, Tj=25℃ | 1 |
| Current squared time | I2t |  |  | 200 | 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 |
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 1 | V | IFM=7.5A | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode | IRRM |  |  | 5 | μA | VRM=VRRM | 1 |
| Thermal resistance, junction to ambient, without heatsink | RθJ-A |  | 23 |  | ℃/W | Without heatsink | 2 |
| Thermal resistance, junction to case, with heatsink | RθJ-C |  | 1.8 |  | ℃/W | With heatsink | 2 |

## 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 |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `GBU1508A`
- Footprint: `Diode_THT:Diode_Bridge_Vishay_GBU`
- 3D model: GBU (KiCad packages3D, STEP)
- 3D model files: `gbu1508a-etched.step` / `gbu1508a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gbu1508a.step` / `gbu1508a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588897839455326208) (4 pp, sha256 `666c6a43f81405e6`, 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/gbu1508a-datasheet.pdf)