{"id":9537,"date":"2026-07-03T08:46:49","date_gmt":"2026-07-03T08:46:49","guid":{"rendered":"https:\/\/materialparts.com\/swpa4018s4r7mt\/"},"modified":"2026-07-03T08:46:49","modified_gmt":"2026-07-03T08:46:49","slug":"swpa4018s4r7mt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/swpa4018s4r7mt\/","title":{"rendered":"SWPA4018S4R7MT"},"content":{"rendered":"

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

The SWPA4018S4R7MT is a shielded wirewound power inductor with 4.7 uH nominal inductance from the SWPA series, designed for DC-DC converter energy storage and output filtering. The compact 4.0 x 1.8 mm package provides good current handling with low electromagnetic radiation for dense PCB layouts.<\/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
Inductance<\/td>\n4.7 uH<\/td>\n<\/tr>\n
Tolerance<\/td>\n+\/-20%<\/td>\n<\/tr>\n
DC Resistance<\/td>\n130 mOhm max<\/td>\n<\/tr>\n
Saturation Current<\/td>\n1.3 A (typical)<\/td>\n<\/tr>\n
Rated Current<\/td>\n1.1 A (40 deg C rise)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n4018 (4.0 x 1.8 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
Shielding<\/td>\nShielded<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 4.7 uH inductance for mid-frequency DC-DC converters<\/li>\n
  • Shielded construction minimizes EMI coupling<\/li>\n
  • Low profile 1.8 mm height for slim devices<\/li>\n
  • Compact 4.0 x 1.8 mm footprint<\/li>\n
  • RoHS compliant<\/li>\n
  • Suitable for switching frequencies 500 kHz – 3 MHz<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • DC-DC buck converter output inductor<\/li>\n
    • Portable device power management<\/li>\n
    • Wearable electronics power supply<\/li>\n
    • IoT module DC-DC filtering<\/li>\n
    • Battery-powered embedded systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SWPA4018S4R7MT is a shielded wirewound power inductor with 4.7 uH nominal inductance from the SWPA series, designed for DC-DC converter energy storage and output filtering. The compact 4.0 x 1.8 mm package provides good current handling with low electromagnetic radiation for dense PCB layouts. Key Specifications Inductance 4.7 uH Tolerance +\/-20% DC […]<\/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":[19,13],"tags":[779],"chip_brand":[179],"class_list":["post-9537","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-swpa4018s4r7mt","chip_brand-gigadevice"],"acf":{"brief_explanation":"4.7uH 1.3A shielded power inductor, 4018, Sunlord","date_code":"","package_case":"4018 (4.0 x 1.8 mm)","in_stock":13741,"datasheet":"https:\/\/mm.digikey.com\/Volume0\/opasdata\/d220001\/medias\/docus\/5341\/SWPA_Series_DS.pdf","price":"$0.08 @ 1ku","product_introduction":"The SWPA4018S4R7MT is a shielded wirewound power inductor from the SWPA series providing 4.7 uH inductance in a 4.0 x 1.8 mm surface-mount package. With 1.3 A saturation current and 130 mOhm maximum DCR, it is designed for DC-DC buck converter output inductors and energy storage in portable and IoT devices. The magnetic shielding reduces EMI interference with nearby circuits. The 1.8 mm profile suits slim form-factor designs such as smartphones and wearables.","working_principle":"The SWPA4018S4R7MT uses a ferrite-core wirewound construction with an integrated magnetic shield. The ferrite drum core concentrates the magnetic flux, while the shield cap containing the flux lines reduces radiated emissions. During DC-DC converter operation, the 4.7 uH inductor smooths the pulsed current from the switching MOSFET, converting it to a relatively constant output current. The inductance value, together with the switching frequency and duty cycle, determines the ripple current amplitude. The 4.7 uH value is optimal for converters operating at 1-3 MHz with output currents in the 0.5-1 A range.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Terminal 1<\/td>I\/O<\/td>Inductor terminal 1<\/td><\/tr>\n
      2<\/td>Terminal 2<\/td>I\/O<\/td>Inductor terminal 2<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • DC-DC buck converter output inductor<\/li>\n
      • Portable device power management<\/li>\n
      • Wearable electronics power supply<\/li>\n
      • IoT module DC-DC filtering<\/li>\n
      • Battery-powered embedded systems<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        TDK<\/td>SLF4018S-4R7MF01<\/td>4018<\/td>4.7uH alternative<\/td><\/tr>\n
        Murata<\/td>DFE201610E-4R7MP2<\/td>2016<\/td>4.7uH smaller option<\/td><\/tr>\n
        Sunlord<\/td>SWPA4020S4R7MT<\/td>4020<\/td>4.7uH higher current option<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9537","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=9537"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9537\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9537"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9537"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}