{"id":10442,"date":"2026-07-20T03:53:49","date_gmt":"2026-07-20T03:53:49","guid":{"rendered":"https:\/\/ic-vendor.com\/npis43ls4r7mtrf\/"},"modified":"2026-07-20T03:53:49","modified_gmt":"2026-07-20T03:53:49","slug":"npis43ls4r7mtrf","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/npis43ls4r7mtrf\/","title":{"rendered":"NPIS43LS4R7MTRF"},"content":{"rendered":"

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

The NPIS43LS4R7MTRF from NIC Components is a shielded power wirewound inductor with 4.7\u00b5H inductance, \u00b120% tolerance, and a compact 4.0 x 4.0 x 3.0mm SMD package. It supports up to 2A RMS current with 2.9A saturation current, 60m\u03a9 maximum DC resistance, and operates from -40\u00b0C to +125\u00b0C. The semi-shielded construction provides effective EMI suppression while maintaining a small footprint.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Inductance<\/td>\n4.7 \u00b5H<\/td>\n<\/tr>\n
Tolerance<\/td>\n\u00b120% (M)<\/td>\n<\/tr>\n
Saturation Current (Isat)<\/td>\n2.9 A<\/td>\n<\/tr>\n
RMS Current (Irms)<\/td>\n2.0 A<\/td>\n<\/tr>\n
DC Resistance (DCR)<\/td>\n60 m\u03a9 max (78 m\u03a9 typ at Arrow)<\/td>\n<\/tr>\n
Self Resonant Frequency (SRF)<\/td>\n31 MHz<\/td>\n<\/tr>\n
Test Frequency<\/td>\n100 kHz, 1V<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n4.0 x 4.0 x 3.0mm (Case 1515)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Semi-shielded construction for EMI suppression<\/li>\n
  • High current handling: up to 2.9A saturation<\/li>\n
  • Low DC resistance: 60m\u03a9 max<\/li>\n
  • Compact 4.0 x 4.0mm footprint with 3.0mm profile<\/li>\n
  • Wirewound technology for excellent saturation characteristics<\/li>\n
  • RoHS compliant and tape-and-reel packaged<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • DC-DC buck\/boost converter output inductors<\/li>\n
    • Power management module energy storage<\/li>\n
    • EMI filtering in power supply circuits<\/li>\n
    • Portable electronics and battery-powered devices<\/li>\n
    • Automotive and industrial power systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The NPIS43LS4R7MTRF from NIC Components is a shielded power wirewound inductor with 4.7\u00b5H inductance, \u00b120% tolerance, and a compact 4.0 x 4.0 x 3.0mm SMD package. It supports up to 2A RMS current with 2.9A saturation current, 60m\u03a9 maximum DC resistance, and operates from -40\u00b0C to +125\u00b0C. The semi-shielded construction provides effective EMI […]<\/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":[13,29],"tags":[1747],"chip_brand":[1746],"class_list":["post-10442","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-npis43ls4r7mtrf","chip_brand-nic-components"],"acf":{"brief_explanation":"4.7uH shielded power inductor, 2.9A Isat, 2A Irms, 60m\u03a9 DCR, 4.0x4.0x3.0mm SMD","date_code":"","package_case":"SMD 4.0 x 4.0 x 3.0mm (Case 1515)","in_stock":6150,"datasheet":"https:\/\/www1.futureelectronics.com\/doc\/NIC%20Components\/230129460674581npis_ls.pdf","price":"$0.15 @ 1ku","product_introduction":"The NPIS43LS4R7MTRF from NIC Components is a semi-shielded power wirewound inductor designed for DC-DC converter and power management applications. With 4.7\u00b5H nominal inductance and \u00b120% tolerance, it handles up to 2.9A saturation current and 2A RMS continuous current. The 60m\u03a9 maximum DC resistance minimizes conduction losses, while the self-resonant frequency of 31MHz ensures stable performance across typical switching frequencies. The compact 4.0 x 4.0 x 3.0mm SMD package (case size 1515) is optimized for high-density PCB layouts in consumer, industrial, and automotive applications.","working_principle":"1. Energy Storage: The wirewound coil stores magnetic energy in its ferrite core when current flows through it, following the relationship E = \u00bdLI\u00b2. The 4.7\u00b5H inductance determines the energy storage capacity per cycle.\n2. Semi-Shielded Design: A magnetic shield partially encloses the coil, containing most of the magnetic flux to reduce EMI radiation to nearby components while allowing sufficient cooling.\n3. Saturation Behavior: At 2.9A saturation current, the ferrite core reaches magnetic saturation, causing inductance to drop by 30% from its initial value. Beyond this point, the inductor loses its energy storage effectiveness.\n4. Frequency Response: The 31MHz self-resonant frequency is determined by the parasitic capacitance between windings. Below SRF, the component behaves as an inductor; above SRF, it becomes capacitive.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Inductor terminal (non-polarized)<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Inductor terminal (non-polarized)<\/td><\/tr><\/table>","application_scenarios":"
      • Output inductor for synchronous buck converters (e.g., 5V to 1.2V at 2A)<\/li>
      • EMI filter inductor in switching power supply input stages<\/li>
      • Energy storage element in boost converter LED driver circuits<\/li>
      • Power line noise filtering in automotive electronic modules<\/li>
      • Battery management system current smoothing<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        NIC Components<\/td>NPIS43LS4R3MTRF<\/td>4.0x4.0x3.0mm<\/td>4.3\u00b5H, 2.95A Isat<\/td><\/tr>
        NIC Components<\/td>NPIS43LS5R6MTRF<\/td>4.0x4.0x3.0mm<\/td>5.6\u00b5H, 2.6A Isat<\/td><\/tr>
        Coilcraft<\/td>XAL4040-472ME<\/td>4.0x4.0mm<\/td>4.7\u00b5H, 3.5A Isat, shielded<\/td><\/tr>
        Taiyo Yuden<\/td>NR4040T4R7N<\/td>4.0x4.0mm<\/td>4.7\u00b5H, 3.0A Isat<\/td><\/tr>
        Bourns<\/td>SRP4020TA-4R7M<\/td>4.0x4.0mm<\/td>4.7\u00b5H, 3.0A Isat<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10442","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=10442"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10442\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10442"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}