Footprint

Omron B3U-1000P

Ultra-small tactile switch — 3x2.5mm SMD pushbutton for reset and mode select

⚡ Install this footprint

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

Search the Adom Wiki for the footprint "Omron B3U-1000P" (slug: sw-b3u-1000p) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/footprints/sw-b3u-1000p. 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 Switch
Library Button_Switch_SMD
Footprint SW_SPST_B3U-1000P
Pads 2
Pitch 3.50mm
Body Size 3.0 x 2.5mm
Mounting Surface Mount
Footprint
3D Model

AI Skill Technical Reference

Edit AI Skill

Omron B3U-1000P

Package: SW_SPST_B3U-1000P Library: Button_Switch_SMD Category: Switch Pads: 2 Pitch: 3.50mm Body Size: 3.0 x 2.5mm Mounting: Surface Mount

Description

The Omron B3U-1000P is an ultra-compact SPST tactile switch measuring just 3 x 2.5mm. This surface-mount pushbutton provides reliable momentary contact with a crisp tactile feel and 100gf actuation force. Standard on microcontroller development boards for reset and boot-mode selection buttons. Also used for volume controls, menu navigation, and user input on wearables and compact IoT devices. The low-profile design (1.2mm height) fits under display assemblies and in tight enclosures. Rated for 200,000 cycles.

Usage Notes

  • Designed for reflow soldering (paste stencil recommended)
  • Pad size optimized for 3.50mm pitch components
  • Follow IPC-7351 land pattern guidelines

KiCad Library Reference

This footprint is from the official KiCad Button_Switch_SMD library. Full identifier: Button_Switch_SMD:SW_SPST_B3U-1000P

To use in your project:

  1. Open the Footprint Library Manager in KiCad
  2. Search for SW_SPST_B3U-1000P
  3. Assign to your schematic symbol in the Symbol Properties dialog

Sub-Skills
?
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: Button_Switch_SMD:SW_SPST_B3U-1000P · Updated 2026-03-02 17:31:36