# BUK9575-55A-VB

**VBsemi Elec** · MOSFETs · TO-220AB

BUK9575-55A-VB from VBsemi Elec, in a TO-220AB. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | G | input | Gate. Logic-level MOSFET gate control input. VGS(th) 1.0-2.5 V; maximum gate-source voltage ±20 V. RDS(on) = 24 mΩ at VGS=10 V, 28 mΩ at VGS=4.5 V. |
| 2 | D | passive | Drain. MOSFET drain terminal, VDS(max) = 60 V, continuous drain current up to 50 A at TC=25 °C (36 A at TC=100 °C), pulsed ID = 200 A. Internally connected to the tab. |
| 3 | S | passive | Source. MOSFET source terminal; body diode anode. Continuous source-drain diode current 50 A, body diode voltage VSD ≤ 2.5 V at IS=51 A. |
| 4 | D | passive | Drain (heatsink tab). Metal tab electrically connected to the drain; used for thermal dissipation with RthJC = 1.0 °C/W. Often soldered or bolted to a heatsink. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | VBsemi Elec |
| Package | TO-220AB |
| Category | Transistors/Thyristors |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `BUK9575-55A-VB`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `buk9575-55a-vb-etched.step` / `buk9575-55a-vb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `buk9575-55a-vb.step` / `buk9575-55a-vb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [VBsemi Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603101040728154112) (None pp, sha256 `fd679eb4426aa4c3`, retrieved 2026-08-17, 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/buk9575-55a-vb-datasheet.pdf)