# KBU2506

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

KBU2506 from Yangzhou Yangjie Elec Tech, in a KBU. 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 outline drawing at the leftmost lead. |
| 2 | AC | passive | AC input of the bridge, marked "AC" on the outline drawing (second lead from the left). |
| 3 | AC | passive | AC input of the bridge, the second lead under the shared "AC" label on the outline drawing (third lead from the left). |
| 4 | + | passive | DC positive output of the bridge, marked "+" on the outline drawing at the rightmost lead (longer lead). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | KBU |
| 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 |  |  | 600 | V |  | 1 |
| Average Rectified Output Current | IO |  |  | 25 | A | @60Hz sine wave, R-load, Tc=115℃ | 1 |
| Surge (Non-repetitive) Forward Current | IFSM |  |  | 400 | A | @60Hz half-sine wave, 1 cycle, Ta=25℃ | 1 |
| Current Squared Time | I2t |  |  | 666 | A2s | @1ms≤t≤8.3ms, Tj=25℃, rating per diode | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction Temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 1.1 | V | IFM=12.5A | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode | IRRM |  |  | 10 | μA | VRM=VRRM | 1 |
| Thermal Resistance, junction to case | RθJ-C |  | 1.4 |  | ℃/W | Between junction and case; units mounted on aluminum plate heat sink (note 1) | 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 |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `KBU2506`
- Footprint: `Diode_THT:Diode_Bridge_Vishay_KBU`
- 3D model: KBU (KiCad packages3D, STEP)
- 3D model files: `kbu2506-etched.step` / `kbu2506-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kbu2506.step` / `kbu2506.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/8590165107926720512) (4 pp, sha256 `fe1ee99f43606815`, 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/kbu2506-datasheet.pdf)