# KBU606

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

KBU606 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 rectifier, marked '-' on the body outline; the part is rated 6 A average output with heatsink (Tc=105°C) and 2.5 A without (Ta=25°C). |
| 2 | AC1 | passive | First AC input of the bridge, marked 'AC' on the body outline; KBU606 is rated VRRM 600 V. |
| 3 | AC2 | passive | Second AC input of the bridge, marked 'AC' on the body outline; KBU606 is rated VRRM 600 V. |
| 4 | + | passive | DC positive output of the bridge rectifier, marked '+' on the body outline; forward voltage is 1.0 V per diode at IFM=3 A. |

## 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 |
|---|---|---|---|---|---|---|---|
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 1 | V | IFM=3A | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode | IRRM |  |  | 10 | μA | VRM=VRRM | 1 |
| Repetitive Peak Reverse Voltage | VRRM |  |  | 600 | V | KBU606 column | 1 |
| Average Rectified Output Current, with heatsink | IO |  |  | 6 | A | @60Hz sine wave, R-load, with heatsink, Tc=105℃ | 1 |
| Average Rectified Output Current, without heatsink | IO |  |  | 2.5 | A | @60Hz sine wave, R-load, without heatsink, Ta=25℃ | 1 |
| Surge (Non-repetitive) Forward Current | IFSM |  |  | 135 | A | @60Hz half-sine wave, 1 cycle, Ta=25℃ | 1 |
| Current Squared Time | I2t |  |  | 75 | A2S | Tj=25℃, rating per diode, 1ms≤t≤8.3ms | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction Temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, junction to ambient, without heatsink | RθJ-A |  | 26 |  | ℃/W | Without heatsink, free air, P.C.B. with 0.5×0.5in copper pads | 2 |
| Thermal Resistance, junction to case, with heatsink | RθJ-C |  | 5 |  | ℃/W | With heatsink on aluminum plate | 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: `KBU606`
- Footprint: `Diode_THT:Diode_Bridge_Vishay_KBU`
- 3D model: KBU (KiCad packages3D, STEP)
- 3D model files: `kbu606-etched.step` / `kbu606-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kbu606.step` / `kbu606.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/8588894919720620032) (4 pp, sha256 `87e08a50b7e2db84`, 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/kbu606-datasheet.pdf)