{"id":6274,"date":"2026-06-12T11:05:49","date_gmt":"2026-06-12T11:05:49","guid":{"rendered":"https:\/\/materialparts.com\/b3u-1000p-b\/"},"modified":"2026-06-12T11:05:49","modified_gmt":"2026-06-12T11:05:49","slug":"b3u-1000p-b","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/b3u-1000p-b\/","title":{"rendered":"B3U-1000P-B"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The B3U-1000P-B from Omron is an ultra-small surface-mount tactile switch with 1.0mm height profile, rated for 12V\/50mA. It features a flat actuator design with 1,000,000 operation life in a compact 3.0 x 2.0mm footprint.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Rating<\/td>\n12V DC, 50 mA (resistive)<\/td>\n<\/tr>\n
Contact Resistance<\/td>\n100 mOhm (max)<\/td>\n<\/tr>\n
Insulation Resistance<\/td>\n100 MOhm (min at 100V DC)<\/td>\n<\/tr>\n
Operating Force<\/td>\n1.57N (160gf)<\/td>\n<\/tr>\n
Travel<\/td>\n0.2mm<\/td>\n<\/tr>\n
Mechanical Life<\/td>\n1,000,000 operations<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-25 to 70 C<\/td>\n<\/tr>\n
Mounting Height<\/td>\n1.0mm (above PCB)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSMD, 3.0 x 2.0mm footprint<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultra-low 1.0mm mounting height for slim devices<\/li>\n
  • Compact 3.0 x 2.0mm footprint saves PCB area<\/li>\n
  • 1 million operation mechanical life<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Mobile phone function keys<\/li>\n
    • Wearable device inputs<\/li>\n
    • Portable instrument controls<\/li>\n
    • Smart home device buttons<\/li>\n
    • Consumer electronics user interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The B3U-1000P-B from Omron is an ultra-small surface-mount tactile switch with 1.0mm height profile, rated for 12V\/50mA. It features a flat actuator design with 1,000,000 operation life in a compact 3.0 x 2.0mm footprint. Key Specifications Rating 12V DC, 50 mA (resistive) Contact Resistance 100 mOhm (max) Insulation Resistance 100 MOhm (min at […]<\/p>\n","protected":false},"author":2,"featured_media":6382,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[160],"class_list":["post-6274","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-omron"],"acf":{"brief_explanation":"Ultra-small SMD tactile switch, 12V\/50mA, 1.0mm height, 3x2mm, 1M operations","date_code":"","package_case":"SMD (3.0 x 2.0 x 1.0mm)","in_stock":4971,"datasheet":"https:\/\/components.omron.com\/en-us\/products\/b3u-1000p-b","price":"$0.12 @ 1ku","product_introduction":"The B3U-1000P-B from Omron is an ultra-compact surface-mount tactile switch designed for thin-profile electronic devices. With a mounting height of only 1.0mm above the PCB and a footprint of just 3.0 x 2.0mm, it is ideal for space-constrained applications such as mobile phones, wearables, and portable instruments. The switch is rated for 12V DC at 50mA resistive load and provides a mechanical life of 1,000,000 operations. The flat actuator design with 0.2mm travel provides a positive tactile click feedback.","working_principle":"The B3U-1000P-B operates as a momentary contact tactile switch using a metal dome contact mechanism. **Contact Mechanism**: A stainless steel dome snaps between two stable states when force is applied. In the resting state, the dome holds the contacts apart (open circuit). When the actuator is pressed with force exceeding 1.57N, the dome inverts, making contact between the two terminals. **Tactile Feedback**: The snap-action of the metal dome provides a distinct tactile click that confirms the switch has been actuated. The 0.2mm travel distance and 1.57N operating force provide a comfortable user experience. **Release**: When the actuating force is removed, the dome springs back to its original shape, opening the contact. This momentary action makes the switch suitable for user input where the circuit should only be closed while the button is held. **Surface Mount**: The switch is designed for reflow soldering with gull-wing terminals that provide secure PCB attachment and visual solder joint inspection.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Switch terminal 1 (common)<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Switch terminal 2 (normally open)<\/td><\/tr>
      3<\/td>Terminal 3<\/td>Switch terminal 1 (common, opposite side)<\/td><\/tr>
      4<\/td>Terminal 4<\/td>Switch terminal 2 (normally open, opposite side)<\/td><\/tr><\/table>","application_scenarios":"
      • Smartphones: Volume, power, and function key inputs in slim mobile devices<\/li>
      • Wearables: User input buttons for smartwatches and fitness trackers<\/li>
      • Portable Devices: Menu navigation and confirm buttons in handheld instruments<\/li>
      • Smart Home: Reset and pairing buttons in IoT devices and smart speakers<\/li>
      • Consumer Electronics: Play\/pause and track skip controls in portable audio players<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        B3U-1000P<\/td>Omron<\/td>Same specs, tape & reel packaging<\/td><\/tr>
        B3U-3000P-B<\/td>Omron<\/td>2.5mm height, higher profile<\/td><\/tr>
        EVQPUJ02K<\/td>Panasonic<\/td>3x2mm, 1.1mm height, tactile switch<\/td><\/tr>
        KMR231NG<\/td>C&K<\/td>3.6x2.5mm, 1.7mm height, tactile<\/td><\/tr>
        SKQGAFE010<\/td>Alps Alpine<\/td>3.0x2.0mm, 0.65mm height, ultra-thin<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6274"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6274\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/6382"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6274"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}