# IRFS7434TRLPBF

**Infineon Technologies** · MOSFETs · D2PAK

IRFS7434TRLPBF from Infineon Technologies, in a D2PAK. 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. Insulated MOSFET gate controlling channel conduction. V_GS(th) = 2.2-3.9 V (typ. 3.0 V); absolute V_GS rating ±20 V. Internal gate resistance R_G ≈ 2.1 Ω typ. Drive with V_GS = 10 V for rated R_DS(on) of ≤1.6 mΩ. |
| 2 | D | passive | Drain. High-side power terminal of the N-channel HEXFET. V_(BR)DSS ≥ 40 V; continuous I_D up to 320 A (silicon limited) / 195 A (package/bond-wire limited) at T_C = 25 °C. Electrically common with the exposed metal tab (heat-sink). |
| 3 | S | passive | Source. Low-side power terminal of the N-channel HEXFET and reference for V_GS. Also the anode of the intrinsic body diode (V_SD ≈ 0.9 V typ., 1.3 V max at I_S = 100 A) used for reverse conduction / synchronous rectification. |
| TAB | D | passive | Exposed metal heat-sink tab, electrically tied to Drain. Provides the primary thermal path (R_thJC ≈ 0.5 °C/W max) - solder to a copper pour for heat removal and drain current handling. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | D2PAK |
| Category | Transistors/Thyristors |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `IRFS7434PbF`
- `IRFS7434TRLPBF`
- `IRFS7434TRRPBF`
- `IRFSL7434PbF`

## CAD (KiCad official)

- Symbol: `IRFS7434TRLPBF`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: D2PAK (KiCad packages3D, STEP)
- 3D model files: `irfs7434trlpbf-etched.step` / `irfs7434trlpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irfs7434trlpbf.step` / `irfs7434trlpbf.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/8588885472169246720) (12 pp, sha256 `4e0a6ba3dd0fbbd3`, 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/irfs7434trlpbf-datasheet.pdf)