{"id":10319,"date":"2026-07-09T12:08:23","date_gmt":"2026-07-09T12:08:23","guid":{"rendered":"https:\/\/materialparts.com\/scf31b-180-s1r7a013j\/"},"modified":"2026-07-09T14:37:41","modified_gmt":"2026-07-09T14:37:41","slug":"scf31b-180-s1r7a013j","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/scf31b-180-s1r7a013j\/","title":{"rendered":"SCF31B-180-S1R7A013J"},"content":{"rendered":"

Productos<\/h2>\n

The SCF31B-180-S1R7A013J from Coilcraft is an 18\u00b5H shielded SMD power inductor from the SCF31B series. The SCF31B is a magnetically shielded drum core inductor designed for DC-DC converter and power management applications. The magnetic shielding minimizes EMI by containing the magnetic flux within the inductor body, preventing coupling to nearby components.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Fabricante<\/td>\nCoilcraft<\/td>\n<\/tr>\n
Inductance<\/td>\n18 \u00b5H<\/td>\n<\/tr>\n
Saturation Current (Isat)<\/td>\n1.7 A (30% drop)<\/td>\n<\/tr>\n
RMS Current (Irms)<\/td>\n1.45 A (40\u00b0C rise)<\/td>\n<\/tr>\n
DC Resistance (DCR)<\/td>\n0.085 \u03a9 max<\/td>\n<\/tr>\n
Shielding<\/td>\nMagnetically Shielded<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C (including self-heating)<\/td>\n<\/tr>\n
Paquete<\/td>\n3.0 x 3.0 x 1.2mm SMD<\/td>\n<\/tr>\n
RoHS<\/td>\nConforme<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 18\u00b5H shielded SMD power inductor<\/li>\n
  • 1.7A saturation current (Isat, 30% inductance drop)<\/li>\n
  • 1.45A RMS current (Irms, 40\u00b0C temperature rise)<\/li>\n
  • Low DCR 0.085\u03a9 max for high efficiency<\/li>\n
  • Magnetically shielded for minimal EMI radiation<\/li>\n
  • Compact 3x3x1.2mm SMD footprint<\/li>\n
  • Suitable for high-frequency DC-DC converters<\/li>\n
  • RoHS compliant<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • DC-DC buck\/boost converter inductor<\/li>\n
    • Power management IC output filter<\/li>\n
    • Battery-powered device voltage regulation<\/li>\n
    • IoT sensor module power supply inductor<\/li>\n
    • Wearable device DC-DC converter<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SCF31B-180-S1R7A013J from Coilcraft is an 18\u00b5H shielded SMD power inductor from the SCF31B series. The SCF31B is a magnetically shielded drum core inductor designed for DC-DC converter and power management applications. The magnetic shielding minimizes EMI by containing the magnetic flux within the inductor body, preventing coupling to nearby components. Key Specifications […]<\/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":[63,60],"tags":[1578,1577],"chip_brand":[242],"class_list":["post-10319","post","type-post","status-publish","format-standard","hentry","category-inductors","category-passive-components","tag-scf31b","tag-scf31b-180-s1r7a013j","chip_brand-coilcraft"],"acf":{"brief_explanation":"Coilcraft SCF31B 18\u00b5H shielded SMD power inductor, 1.7A Isat, 1.45A Irms, 0.085\u03a9 DCR, 3x3x1.2mm","date_code":"","package_case":"SMD Shielded Drum Core (3.0 x 3.0 x 1.2mm)","in_stock":8218,"datasheet":"https:\/\/www.coilcraft.com\/en-us\/products\/scf\/scf31b\/","price":"","product_introduction":"The SCF31B-180-S1R7A013J from Coilcraft is an 18\u00b5H magnetically shielded SMD power inductor from the SCF31B series. The SCF31B series is designed for DC-DC converter applications where magnetic shielding is required to prevent EMI coupling to nearby sensitive circuits. The 3x3mm footprint and 1.2mm height make it one of the most compact shielded inductors available, suitable for space-constrained applications like smartphones, wearables, and IoT devices. The 18\u00b5H inductance at 1.7A saturation current is a popular value for step-down converters operating at 1-5MHz switching frequencies.","working_principle":"The SCF31B-180-S1R7A013J operates as a shielded drum core power inductor. The construction consists of a ferrite drum core (center post with top plate) wound with copper wire and enclosed by a ferrite shield cap. The magnetic flux flows through the center post, across the air gap to the top plate, and returns through the ferrite shield, forming a closed magnetic circuit. This shielding contains the magnetic field within the inductor body, reducing EMI radiation by 10-20dB compared to unshielded drum core inductors. The ferrite material is formulated for low core loss at high frequencies (1-5MHz), allowing efficient operation at the switching frequencies common in modern DC-DC converters. The Isat rating of 1.7A is defined as the DC current at which inductance drops by 30% from its zero-bias value, corresponding to the onset of ferrite core saturation.","pin_description":"
      Pad<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Passive<\/td>One end of the inductor winding; connect to switch node or input<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Passive<\/td>Other end of the inductor winding; connect to output or ground<\/td><\/tr><\/table>","application_scenarios":"
      • Buck Converter:<\/strong> Output inductor for step-down DC-DC converters operating at 1-5MHz where 18\u00b5H provides appropriate ripple current at typical load currents of 0.5-1.5A.<\/li>
      • Boost Converter:<\/strong> Inductor for step-up converters where 18\u00b5H at 1.7A Isat suits battery-powered boost applications.<\/li>
      • PMIC Filter:<\/strong> Power management IC output filter inductor where magnetic shielding prevents coupling to RF circuits.<\/li>
      • IoT Module:<\/strong> Compact DC-DC inductor for IoT sensor nodes where 3x3mm footprint and magnetic shielding enable dense PCB layouts.<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Inductance<\/th>Isat<\/th>Notes<\/th><\/tr>
        Murata<\/td>LQH32PN180K23L<\/td>18\u00b5H<\/td>1.4A<\/td>Unshielded, 1210<\/td><\/tr>
        TDK<\/td>SLF7032T-180M1R7-PF<\/td>18\u00b5H<\/td>1.7A<\/td>Shielded equivalent<\/td><\/tr>
        W\u00fcrth<\/td>74404002180<\/td>18\u00b5H<\/td>1.6A<\/td>Shielded, similar size<\/td><\/tr>
        Coilcraft<\/td>XFL3012-180MLB<\/td>18\u00b5H<\/td>1.8A<\/td>Lower profile alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/10319","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=10319"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/10319\/revisions"}],"predecessor-version":[{"id":10322,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/10319\/revisions\/10322"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=10319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=10319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=10319"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=10319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}