# IRFU7440PBF

**Infineon Technologies** · MOSFETs · IPAK

IRFU7440PBF from Infineon Technologies, in a IPAK. 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 | G | input | Gate control input of the N-channel MOSFET, rated for a maximum gate-to-source voltage of ±20 V. |
| 2 | D | passive | Drain terminal, rated for 40 V minimum drain-to-source breakdown voltage (VDSS) and 180 A silicon-limited (90 A package-limited) continuous current, and connected to the mounting tab. |
| 3 | S | passive | Source terminal, carrying up to 90 A continuous current (wire-bond limited) and the body-diode current of up to 180 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | IPAK |
| Category | Transistors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `IRFU7440PBF`
- Footprint: `Package_TO_SOT_THT:TO-251-3_Vertical`
- 3D model: IPAK (KiCad packages3D, STEP)
- 3D model files: `irfu7440pbf-etched.step` / `irfu7440pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irfu7440pbf.step` / `irfu7440pbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://www.infineon.com/dgdl/irfr7440pbf.pdf?fileId=5546d462533600a4015356359e662117) (13 pp, sha256 `cb13e27f420c3cfd`, retrieved 2026-10-27, 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/irfu7440pbf-datasheet.pdf)