{"id":11185,"date":"2026-07-25T02:41:40","date_gmt":"2026-07-25T02:41:40","guid":{"rendered":"https:\/\/ic-vendor.com\/blm31pg391sh1l\/"},"modified":"2026-07-25T02:41:40","modified_gmt":"2026-07-25T02:41:40","slug":"blm31pg391sh1l","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/blm31pg391sh1l\/","title":{"rendered":"BLM31PG391SH1L"},"content":{"rendered":"

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

The Murata BLM31PG391SH1L is a 390\u03a9 (at 100MHz) chip ferrite bead with 1500mA rated current in a 1206 (3216 metric) package. Designed for automotive applications, it provides high-impedance noise suppression on power supply and signal lines.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
Impedance @ 100MHz<\/td>\n390 \u03a9<\/td>\n<\/tr>\n
Rated Current<\/td>\n1500 mA<\/td>\n<\/tr>\n
DC Resistance (DCR)<\/td>\n~0.15 \u03a9 max<\/td>\n<\/tr>\n
Impedance @ 1MHz<\/td>\n~5 \u03a9<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n1206 (3216 Metric, 3.2×1.6mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • High 390\u03a9 impedance at 100MHz<\/li>\n
  • 1500mA high current rating<\/li>\n
  • Low DC resistance for minimal voltage drop<\/li>\n
  • Automotive-grade reliability<\/li>\n
  • Monolithic ferrite construction<\/li>\n
  • RoHS compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Power supply line noise filtering<\/li>\n
    • Automotive ECU EMI suppression<\/li>\n
    • Signal line common-mode noise blocking<\/li>\n
    • USB and CAN bus noise filtering<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Murata BLM31PG391SH1L is a 390\u03a9 (at 100MHz) chip ferrite bead with 1500mA rated current in a 1206 (3216 metric) package. Designed for automotive applications, it provides high-impedance noise suppression on power supply and signal lines. Key Specifications Impedance @ 100MHz 390 \u03a9 Rated Current 1500 mA DC Resistance (DCR) ~0.15 \u03a9 max […]<\/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":[13,56],"tags":[2457],"chip_brand":[202],"class_list":["post-11185","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","tag-blm31pg391sh1l","chip_brand-murata"],"acf":{"brief_explanation":"390ohm @100MHz ferrite bead, 1.5A rated, 1206 SMD, -55 to 125C, automotive","date_code":"","package_case":"1206 (3216 Metric, 3.2x1.6mm)","in_stock":15670,"datasheet":"https:\/\/www.murata.com\/en-global\/products\/emc\/chipferritebeat\/blm31p","price":"$0.02 @ 10ku","product_introduction":"The BLM31PG391SH1L from Murata is a 390\u03a9 (at 100MHz) chip ferrite bead with 1500mA rated current in a 1206 (3216 metric) package. The ferrite material provides high impedance at high frequencies for effective noise suppression while maintaining low DC resistance (~0.15\u03a9) for minimal voltage drop on DC power lines. Designed for automotive applications with -55\u00b0C to +125\u00b0C operating range, it is suitable for EMI filtering on ECU power supplies and signal lines.","working_principle":"The BLM31PG391SH1L uses a monolithic ferrite bead construction where a conductive wire passes through a ferrite body. At DC and low frequencies, the device presents only the DC resistance of the wire (~0.15\u03a9). At high frequencies, the ferrite material's complex permeability creates high impedance (Z = R + j\u03c9L) that attenuates high-frequency noise while allowing DC and low-frequency signals to pass. The 390\u03a9 impedance at 100MHz provides effective suppression of switching noise, clock harmonics, and EMI.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Term 1<\/td>Passive<\/td>Terminal 1 (non-polar)<\/td><\/tr>
      2<\/td>Term 2<\/td>Passive<\/td>Terminal 2 (non-polar)<\/td><\/tr><\/table>","application_scenarios":"
      • ECU power supply line EMI filtering<\/li>
      • Automotive CAN\/LIN bus noise suppression<\/li>
      • USB power line noise filtering<\/li>
      • Clock line harmonic suppression<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        BLM31PG601SN1L<\/td>Murata<\/td>600\u03a9 higher impedance<\/td><\/tr>
        GCM20120911A391KA01D<\/td>Murata<\/td>Automotive MLCC alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=11185"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11185\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11185"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}