Footprint

TSSOP-20

Thin Shrink Small Outline — 20-pin IC for shift registers, I/O expanders, and drivers

⚡ Install this footprint

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

Search the Adom Wiki for the footprint "TSSOP-20" (slug: tssop-20) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/footprints/tssop-20. 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 TSSOP-20_4.4x6.5mm_P0.65mm
Pads 20
Pitch 0.65mm
Body Size 4.4 x 6.5mm
Mounting Surface Mount
Footprint
3D Model

AI Skill Technical Reference

Edit AI Skill

TSSOP-20

Package: TSSOP-20_4.4x6.5mm_P0.65mm Library: Package_SO Category: IC Package Pads: 20 Pitch: 0.65mm Body Size: 4.4 x 6.5mm Mounting: Surface Mount

Description

The TSSOP-20 is a 20-pin thin shrink small outline package with 0.65mm pitch and a 4.4 x 6.5mm body. It is the natural step up from TSSOP-14 for ICs needing more I/O. Commonly houses shift registers (74HC595), I/O expanders (PCF8574), LED drivers (TLC5940), USB interfaces, and small microcontroller variants. The thin 1.1mm profile and narrow body make it suitable for dense layouts while remaining hand-solderable with drag soldering technique.

Usage Notes

  • Designed for reflow soldering (paste stencil recommended)
  • Pad size optimized for 0.65mm 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:TSSOP-20_4.4x6.5mm_P0.65mm

To use in your project:

  1. Open the Footprint Library Manager in KiCad
  2. Search for TSSOP-20_4.4x6.5mm_P0.65mm
  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.

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0 revisions · KiCad Library: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm · Updated 2026-03-02 17:31:36