# IRFZ46NPBF

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

IRFZ46NPBF 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 channel with VGS rated ±20 V and a threshold of 2.0 V to 4.0 V at VDS = VGS, ID = 250 µA. |
| 2 | D | passive | Drain (also the tab); VDSS 55 V, continuous drain current 53 A at TC = 25°C (package limit 39 A). |
| 3 | S | passive | Source; body diode conducts continuous 53 A and pulsed 180 A to the drain with VSD max 1.3 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `IRFZ46NPBF`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `irfz46npbf-etched.step` / `irfz46npbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irfz46npbf.step` / `irfz46npbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588896300762861569) (8 pp, sha256 `c983226fbe8e525c`, retrieved 2026-10-09, 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/irfz46npbf-datasheet.pdf)