# AUIRFB8405

**Infineon Technologies** · MOSFETs · TO-220AB

AUIRFB8405 from Infineon Technologies, in a TO-220AB. 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; controls the MOSFET, with a maximum gate-to-source voltage of ±20 V. |
| 2 | D | passive | Drain, connected internally to the mounting tab; VDSS is 40 V and continuous drain current is 185 A silicon limited and 120 A package limited. |
| 3 | S | passive | Source; the current return path of the MOSFET. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | TO-220AB |
| Category | Transistors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `AUIRFB8405`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `auirfb8405-etched.step` / `auirfb8405-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `auirfb8405.step` / `auirfb8405.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/auirfb8405.pdf?fileId=5546d462533600a4015355b11c9c1426) (12 pp, sha256 `81e73ff2e725255c`, retrieved 2026-10-28, tier: manufacturer)
- **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/auirfb8405-datasheet.pdf)