Editing: TO-263 (D2PAK)

Field: AI Skill Technical Reference

# TO-263 (D2PAK)

**Package:** TO-263-2
**Library:** Package_TO_SOT_SMD
**Category:** Power Package
**3D Model:** TO-263-2.step
**Format:** STEP

## Description

The TO-263 (D2PAK) is the surface-mount version of TO-220 for high-power applications. At 10 x 9mm with a massive thermal tab, it dissipates up to 2-3W without heatsinking and much more with PCB copper pour thermal relief. Houses high-current MOSFETs (IRF3205S), high-power voltage regulators, and power Schottky diodes. Roughly 50% larger than DPAK (TO-252), it handles higher thermal loads. The 3D model shows the large body, wide thermal tab, and two signal leads.

## 3D Model Details

This 3D model is from the official KiCad `Package_TO_SOT_SMD.3dshapes` library.
The model is available in STEP format and can be used in any 3D CAD tool.

### Formats Available

- **STEP** — Industry-standard 3D CAD format, importable into Fusion 360, SolidWorks, FreeCAD
- **GLB** — Web-optimized binary glTF for real-time 3D rendering

## KiCad Library Reference

Footprint: `Package_TO_SOT_SMD:TO-263-2`
3D Model: `Package_TO_SOT_SMD.3dshapes/TO-263-2.step`

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