Footprint

SOT-23-3

Small Outline Transistor — 3-pin SMD package, the most common transistor footprint

⚡ Install this footprint

Paste this into Claude Code (VS Code panel, Adom editor, or terminal) to install:

Search the Adom Wiki for the footprint "SOT-23-3" (slug: sot-23-3) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/footprints/sot-23-3. Download the .kicad_mod file and any .glb 3D model from the wiki page's static assets. Add the footprint to my current KiCad project's footprints/ directory and register in fp-lib-table.
Category Transistor / Small Signal
Library Package_TO_SOT_SMD
Footprint SOT-23-3
Pads 3
Pitch 0.95mm
Body Size 2.9 x 1.3mm
Mounting Surface Mount
Footprint
3D Model

AI Skill Technical Reference

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SOT-23-3

Package: SOT-23-3 Library: Package_TO_SOT_SMD Category: Transistor / Small Signal Pads: 3 Pitch: 0.95mm Body Size: 2.9 x 1.3mm Mounting: Surface Mount

Description

The SOT-23-3 is the most widely used surface-mount transistor package in the world. With just three pins at 0.95mm pitch and a tiny 2.9 x 1.3mm body, it houses MOSFETs, BJTs, voltage references, small LDO regulators, and single-gate logic ICs. Its compact size and excellent thermal performance make it the go-to package for space-constrained designs, from smartphones to industrial controllers.

Usage Notes

  • Designed for reflow soldering (paste stencil recommended)
  • Pad size optimized for 0.95mm pitch components
  • Follow IPC-7351 land pattern guidelines

KiCad Library Reference

This footprint is from the official KiCad Package_TO_SOT_SMD library. Full identifier: Package_TO_SOT_SMD:SOT-23-3

To use in your project:

  1. Open the Footprint Library Manager in KiCad
  2. Search for SOT-23-3
  3. Assign to your schematic symbol in the Symbol Properties dialog

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0 revisions · KiCad Library: Package_TO_SOT_SMD:SOT-23-3 · Updated 2026-03-02 17:31:36