{"id":6999,"date":"2026-06-22T12:43:33","date_gmt":"2026-06-22T12:43:33","guid":{"rendered":"https:\/\/materialparts.com\/srr1210-470m\/"},"modified":"2026-06-22T12:43:33","modified_gmt":"2026-06-22T12:43:33","slug":"srr1210-470m","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/srr1210-470m\/","title":{"rendered":"SRR1210-470M"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The SRR1210-470M from Bourns is a 47\u00b5H shielded power inductor in a 1210 (12.5×12.5×10.0mm) surface-mount package. It features a 3.0A saturation current rating, 3.5A RMS current rating, and low 28m\u03a9 maximum DC resistance. The M suffix indicates \u00b120% inductance tolerance. The shielded construction minimizes EMI radiation.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n
Inductance<\/td>\n47\u00b5H (\u00b120%)<\/td>\n<\/tr>\n
Saturation Current (Isat)<\/td>\n3.0A (@ 30% inductance drop)<\/td>\n<\/tr>\n
RMS Current (Irms)<\/td>\n3.5A (@ 40\u00b0C temperature rise)<\/td>\n<\/tr>\n
DC Resistance (DCR)<\/td>\n28m\u03a9 (Max)<\/td>\n<\/tr>\n
Self-Resonant Frequency (SRF)<\/td>\n6.5MHz (Min)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n1210 (12.5 x 12.5 x 10.0 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C ~ +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Shielded construction minimizes EMI<\/li>\n
  • Low DCR for high efficiency<\/li>\n
  • High saturation current rating<\/li>\n
  • Compact 1210 footprint<\/li>\n
  • Compatible with high-temperature soldering<\/li>\n
  • Moisture sensitivity level 1<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • DC-DC converter output inductors<\/li>\n
    • Power supply filtering<\/li>\n
    • Switching regulator energy storage<\/li>\n
    • LED driver inductors<\/li>\n
    • Industrial power systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SRR1210-470M from Bourns is a 47\u00b5H shielded power inductor in a 1210 (12.5×12.5×10.0mm) surface-mount package. It features a 3.0A saturation current rating, 3.5A RMS current rating, and low 28m\u03a9 maximum DC resistance. The M suffix indicates \u00b120% inductance tolerance. The shielded construction minimizes EMI radiation. Key Specifications Inductance 47\u00b5H (\u00b120%) Saturation Current […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[220],"class_list":["post-6999","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-bourns"],"acf":{"brief_explanation":"47\u00b5H shielded power inductor, 3.0A Isat, 3.5A Irms, 28m\u03a9 DCR in 12.5x12.5x10mm 1210 package","date_code":"","package_case":"1210 (12.5 x 12.5 x 10.0 mm) Shielded SMD","in_stock":5600,"datasheet":"https:\/\/www.bourns.com\/docs\/default-source\/document-library\/srr1210-datasheet.pdf","price":"$1.25 @ 1ku","product_introduction":"The SRR1210 series from Bourns features shielded power inductors designed for DC-DC converter applications. The shielded construction effectively contains the magnetic field, reducing EMI and allowing placement near sensitive circuitry. The 47\u00b5H version (SRR1210-470M) provides a balance of inductance and current handling that is well-suited for medium-voltage buck and boost converter designs operating at frequencies from 100kHz to several MHz.","working_principle":"In a DC-DC converter, the inductor stores energy in its magnetic field during the switch-on period and releases it to the load during the switch-off period. The shielded construction uses a magnetic shield (typically ferrite) that surrounds the coil, closing the magnetic flux path within the component. This reduces radiated EMI by containing the magnetic field lines. The inductor's DC resistance (DCR) determines conduction losses, while the saturation current defines the maximum current before inductance drops significantly due to core saturation.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Inductor winding start<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Inductor winding end<\/td><\/tr><\/table>","application_scenarios":"
      • 24V Industrial Buck Converter<\/b>: 47\u00b5H inductance suits 24V-to-5V buck at 300-500kHz with 3A load<\/li>
      • LED Driver Boost Inductor<\/b>: Shielded design prevents EMI interference with LED dimming circuitry<\/li>
      • Battery-Powered SEPIC<\/b>: 3A Isat handles peak currents in SEPIC topology for wide-input battery systems<\/li>
      • Point-of-Load DC-DC<\/b>: Low 28m\u03a9 DCR maintains >95% converter efficiency at moderate load currents<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        SRR1210-330M<\/td>Bourns<\/td>33\u00b5H, higher Isat<\/td><\/tr>
        SRR1210-680M<\/td>Bourns<\/td>68\u00b5H, lower Isat<\/td><\/tr>
        DR127-470<\/td>Cooper Bussmann<\/td>47\u00b5H, unshielded, similar size<\/td><\/tr>
        WE-PD 744771147<\/td>W\u00fcrth<\/td>47\u00b5H shielded, 12x12mm<\/td><\/tr>
        IHLP-2525BD-47<\/td>Vishay<\/td>47\u00b5H, 6.5x6.5mm smaller<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6999"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6999\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6999"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6999"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}