{"id":9293,"date":"2026-07-03T04:45:28","date_gmt":"2026-07-03T04:45:28","guid":{"rendered":"https:\/\/materialparts.com\/blm21pg300sn1\/"},"modified":"2026-07-03T04:45:50","modified_gmt":"2026-07-03T04:45:50","slug":"blm21pg300sn1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/blm21pg300sn1\/","title":{"rendered":"BLM21PG300SN1"},"content":{"rendered":"

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

The BLM21PG300SN1 is a chip ferrite bead from Murata’s BLM21P series, featuring 30 Ohm impedance at 100MHz with 2A rated current in a 0805 (2012 Metric) surface-mount package. AEC-Q200 qualified, it provides effective EMI suppression in power lines while maintaining low DC resistance for minimal voltage drop at high current.<\/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\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nFerrite Bead<\/td>\n<\/tr>\n
Impedance @ 100MHz<\/td>\n30 Ohm<\/td>\n<\/tr>\n
Rated Current<\/td>\n2A<\/td>\n<\/tr>\n
DC Resistance (max)<\/td>\n0.040 Ohm<\/td>\n<\/tr>\n
Package \/ Case<\/td>\n0805 (2012 Metric)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0624\u0647\u0644\u0627\u062a<\/td>\nAEC-Q200<\/td>\n<\/tr>\n
EU RoHS<\/td>\n\u0645\u062a\u0648\u0627\u0641\u0642<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • AEC-Q200 automotive qualified<\/li>\n
  • 30 Ohm impedance at 100MHz for EMI suppression<\/li>\n
  • 2A high rated current with low DC resistance<\/li>\n
  • 0805 standard footprint for easy placement<\/li>\n
  • BLM21P series: high-current, low-DCR type<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive ECU power line EMI filtering<\/li>\n
    • USB and CAN bus noise suppression<\/li>\n
    • DC power supply noise filtering<\/li>\n
    • Industrial equipment EMI countermeasures<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The BLM21PG300SN1 is a chip ferrite bead from Murata’s BLM21P series, featuring 30 Ohm impedance at 100MHz with 2A rated current in a 0805 (2012 Metric) surface-mount package. AEC-Q200 qualified, it provides effective EMI suppression in power lines while maintaining low DC resistance for minimal voltage drop at high current. Key Specifications Type […]<\/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":[13,42],"tags":[449],"chip_brand":[202],"class_list":["post-9293","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","tag-blm21pg300sn1","chip_brand-murata"],"acf":{"brief_explanation":"Ferrite bead, 0805, 30Ohm @ 100MHz, 2A rated, AEC-Q200","date_code":"","package_case":"0805 (2012 Metric) 2.0 x 1.25 x 1.25 mm","in_stock":45000,"datasheet":"https:\/\/www.murata.com\/en-global\/products\/productdetail?partno=BLM21PG300SN1","price":"$0.015 @ 10ku","product_introduction":"The BLM21PG300SN1 is a chip ferrite bead from Murata's BLM21P series, featuring 30 Ohm impedance at 100MHz with 2A rated current in a 0805 (2012 Metric) surface-mount package. AEC-Q200 qualified for automotive applications, it provides effective EMI suppression in power lines while maintaining low DC resistance (40 mOhm max) for minimal voltage drop at high current. The BLM21P 'G' series offers the highest current capability in the 0805 ferrite bead category.","working_principle":"The BLM21PG300SN1 operates as a chip ferrite bead:\n\n1. Ferrite Material: The device consists of a multilayer ferrite body with internal conductor patterns. The ferrite material exhibits frequency-dependent impedance: low impedance at DC\/low frequencies (allowing DC current to pass with minimal loss) and high impedance at high frequencies (blocking EMI noise).\n\n2. Impedance Characteristic: At DC, the device behaves like a resistor (DCR \u2248 40 mOhm). As frequency increases, the ferrite material's complex permeability causes impedance to rise, reaching 30 Ohm at 100MHz. This impedance is a combination of resistive (lossy) and reactive (inductive) components.\n\n3. EMI Suppression: When placed in series with a power line, high-frequency noise currents see high impedance and are attenuated, while the DC current passes with minimal voltage drop (V = I \u00d7 DCR = 2A \u00d7 0.04Ohm = 80mV).\n\n4. Current Derating: Above the rated 2A, the ferrite material approaches magnetic saturation, reducing impedance. At saturation, the ferrite bead loses its EMI suppression effectiveness.","pin_description":"\n
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Terminal A<\/td>Passive<\/td>Series element - connected to noise source side<\/td><\/tr>\n
      2<\/td>Terminal B<\/td>Passive<\/td>Series element - connected to clean side \/ load<\/td><\/tr>\n<\/table>\n

      Note: 2-terminal passive ferrite bead, no polarity. Place as close as possible to the noise source for maximum EMI suppression effectiveness. For power lines, place near the connector entry point. For IC decoupling, place between the power source and the IC.<\/p>","application_scenarios":"\n
      Application<\/th>Circuit Role<\/th>Key Requirement<\/th><\/tr>\n
      Automotive ECU<\/td>Power line EMI filtering at connector entry<\/td>30Ohm @ 100MHz, 2A, AEC-Q200<\/td><\/tr>\n
      USB Interface<\/td>VBUS line noise suppression<\/td>2A rated, low DCR<\/td><\/tr>\n
      CAN Bus<\/td>Power supply noise filtering<\/td>30Ohm impedance, 0805<\/td><\/tr>\n
      DC-DC Converter<\/td>Input\/output EMI filtering<\/td>High current, AEC-Q200<\/td><\/tr>\n
      Industrial Equipment<\/td>Motor drive noise suppression<\/td>2A, 30Ohm, reliable<\/td><\/tr>\n<\/table>","alternative_models":"\n
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Key Specs<\/th>Notes<\/th><\/tr>\n
      TDK<\/td>MMZ2012S300A<\/td>0805<\/td>30Ohm @ 100MHz, 2A<\/td>Direct equivalent<\/td><\/tr>\n
      TDK<\/td>MMZ2012D300C<\/td>0805<\/td>30Ohm @ 100MHz, 2A<\/td>Direct equivalent<\/td><\/tr>\n
      TAIYO YUDEN<\/td>FBMH2012HM300NT<\/td>0805<\/td>30Ohm @ 100MHz, 2A<\/td>Direct equivalent<\/td><\/tr>\n
      Samsung<\/td>CIM2012S300NE<\/td>0805<\/td>30Ohm @ 100MHz, 2A<\/td>Direct equivalent<\/td><\/tr>\n
      Wurth<\/td>742792030<\/td>0805<\/td>30Ohm @ 100MHz, 2A<\/td>Direct equivalent<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9293","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=9293"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9293\/revisions"}],"predecessor-version":[{"id":9303,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9293\/revisions\/9303"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9293"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9293"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}