Footprint

SOIC-8

Small Outline IC — the most popular 8-pin surface mount IC package

⚡ Install this footprint

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

Search the Adom Wiki for the footprint "SOIC-8" (slug: soic-8) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/footprints/soic-8. 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 IC Package
Library Package_SO
Footprint SOIC-8_3.9x4.9mm_P1.27mm
Pads 8
Pitch 1.27mm
Body Size 3.9 x 4.9mm
Mounting Surface Mount
Footprint
3D Model

AI Skill Technical Reference

Edit AI Skill

SOIC-8

Package: SOIC-8_3.9x4.9mm_P1.27mm Library: Package_SO Category: IC Package Pads: 8 Pitch: 1.27mm Body Size: 3.9 x 4.9mm Mounting: Surface Mount

Description

The SOIC-8 is the single most popular surface-mount IC package ever made. At 3.9 x 4.9mm with 1.27mm (50 mil) pitch, it is the SMD successor to the DIP-8 and houses an enormous range of ICs: op-amps (LM358, NE5532), voltage regulators (LM78L05), SPI flash (W25Q), EEPROMs (AT24C), timers (NE555), motor drivers, and gate drivers. The wide pin pitch makes it easy to solder by hand and inspect visually, making it the default choice when board space allows.

Usage Notes

  • Designed for reflow soldering (paste stencil recommended)
  • Pad size optimized for 1.27mm pitch components
  • Follow IPC-7351 land pattern guidelines

KiCad Library Reference

This footprint is from the official KiCad Package_SO library. Full identifier: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm

To use in your project:

  1. Open the Footprint Library Manager in KiCad
  2. Search for SOIC-8_3.9x4.9mm_P1.27mm
  3. Assign to your schematic symbol in the Symbol Properties dialog

Sub-Skills
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What are Sub-Skills?

Sub-skills are community-contributed AI skill extensions for this component. They teach AI assistants about specific tools, configurators, or workflows.

Examples:

  • A manufacturer’s configuration tool for a motor controller
  • A community-written design guide for an amplifier circuit
  • An automated test/validation script for a sensor module

How to add one: Click Add Sub-Skill, provide the URL to your skill and a brief description. Submissions are reviewed by the Adom team before going live.

No sub-skills yet. Be the first to contribute one!

0 revisions · KiCad Library: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm · Updated 2026-03-02 17:31:36