{"id":4313,"date":"2026-08-24T12:19:13","date_gmt":"2026-08-24T12:19:13","guid":{"rendered":"https:\/\/theemcnews.co.uk\/?page_id=4313"},"modified":"2026-08-24T12:22:13","modified_gmt":"2026-08-24T12:22:13","slug":"yageo-presents-single-phase-common-mode-chokes-for-industrial-emi-suppression","status":"publish","type":"page","link":"https:\/\/theemcnews.co.uk\/index.php\/yageo-presents-single-phase-common-mode-chokes-for-industrial-emi-suppression\/","title":{"rendered":"YAGEO Presents Single-Phase Common Mode Chokes for Industrial EMI Suppression"},"content":{"rendered":"\t\t
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YAGEO Group\u2019s SCF\u2011X and SCT\u2011X single\u2011phase common mode chokes are EMI filter components for industrial power systems that must meet stringent EMC requirements without sacrificing efficiency or board space.<\/p>

The\u00a0YAGEO<\/a>\u00a0single\u2011phase\u00a0common mode chokes\u00a0<\/a>combine a wide inductance and current range with two\u00a0core<\/a>\u00a0material options, giving design engineers a single platform for both high\u2011performance and cost\u2011optimized conducted noise suppression in single\u2011phase AC and DC applications.<\/p>

Key features and benefits<\/h2>
  • Rated for industrial single-phase grids up to 500 VAC\/VDC<\/strong>, suitable for typical mains\u2011connected power supplies, inverters and control systems in industrial environments.<\/li>
  • Current range from 1 A to 22 A<\/strong>, covering low\u2011power control electronics up to higher\u2011power single\u2011phase drives and conditioners.<\/li>
  • Very wide inductance range from 0.07 mH to 95.26 mH<\/strong>, allowing precise EMI tuning across low and higher frequency regions using standard parts rather than custom chokes.<\/li>
  • Two core material systems in one family<\/strong>: nanocrystalline SCF\u2011X for strong broadband attenuation; SCT\u2011X with high\u2011heat\u2011resistant Mn\u2011Zn ferrite (10HT) for cost\u2011effective, targeted noise suppression.<\/li>
  • Low DC resistance (0.64 m\u03a9 to 65.26 m\u03a9)<\/strong>\u00a0to minimize conduction losses and heat generation, which is critical in tightly packed power supplies and inverters.<\/li>
  • Operating temperature range from \u221240 \u00b0C to +130 \u00b0C<\/strong>, supporting continuous operation in harsh industrial environments, control cabinets and HVAC systems.<\/li>
  • Compact toroidal construction with UL 94 V\u20110 rated base and cap<\/strong>, improving PCB integration, mechanical robustness and fire safety compliance.<\/li>
  • 116 part numbers across multiple core sizes (12, 17, 23 and 31 mm)<\/strong>, giving purchasing and design teams a broad but coherent catalog for platform\u2011wide standardization.<\/li><\/ul>

    Typical applications<\/h2>

    The SCF\u2011X and SCT\u2011X single\u2011phase common mode chokes are positioned for conducted EMI suppression in industrial and building\u2011related power electronics where compliance with EMC standards and reliable long\u2011term operation are key.<\/p>

    Typical application areas include:<\/p>

    • Industrial equipment and factory automation controllers.<\/li>
    • Industrial inverters and single\u2011phase motor drives.<\/li>
    • Switched\u2011mode power supplies and power conditioners for machinery and tooling.<\/li>
    • Single\u2011phase power converters and front\u2011end EMI filters in rectifier stages.<\/li>
    • Air conditioning and HVAC systems with electronic control and variable\u2011speed compressors.<\/li>
    • Robotics and motion control systems requiring compact, high\u2011performance EMI filtering.<\/li><\/ul>

      In practice, these chokes are used in common\u2011mode filter stages at the AC input or DC bus interface to suppress noise that couples symmetrically onto line and neutral, helping designs pass conducted emission tests without large external filters or custom magnetics.<\/p>

      Technical highlights<\/h2>

      Electrical ratings and ranges<\/strong><\/h4>
      • Rated voltage: up to 500 VAC\/VDC.<\/li>
      • Rated current range: 1 A to 22 A.<\/li>
      • Inductance range: 0.07 mH to 95.26 mH.<\/li>
      • DC resistance (DCR): 0.64 m\u03a9 to 65.26 m\u03a9.<\/li>
      • Operating temperature range: \u221240 \u00b0C to +130 \u00b0C.<\/li><\/ul>

        These ranges make the family suitable for single\u2011phase mains levels used in many industrial regions and allow scaling from small loads to larger single\u2011phase equipment without changing platform or layout.<\/p>

        Core materials and construction<\/strong><\/h4>
        • SCF\u2011X: nanocrystalline core technology for strong broadband EMI suppression across a wide frequency spectrum, beneficial when conducted noise spans from tens of kilohertz into the megahertz region.<\/li>
        • SCT\u2011X: proprietary 10HT Mn\u2011Zn ferrite core material with high heat resistance and high saturation flux density (Bs), optimized for cost\u2011effective suppression in defined frequency bands and elevated temperature environments.<\/li>
        • Toroidal construction: compact footprint, low stray fields and straightforward integration into PCB or chassis\u2011mounted EMI filters.<\/li>
        • UL 94 V\u20110 rated base and cap: supports safety compliance and reduces risk in fire\u2011critical or safety\u2011relevant designs.<\/li><\/ul>

          Platform overview<\/h2>
          Parameter<\/th>SCF\u2011X \/ SCT\u2011X family<\/th><\/tr><\/thead>
          Voltage rating<\/td>Up to 500 VAC\/VDC<\/td><\/tr>
          Current range<\/td>1 A \u2013 22 A<\/td><\/tr>
          Inductance range<\/td>0.07 mH \u2013 95.26 mH<\/td><\/tr>
          DCR range<\/td>0.64 m\u03a9 \u2013 65.26 m\u03a9<\/td><\/tr>
          Operating temperature<\/td>\u221240 \u00b0C to +130 \u00b0C<\/td><\/tr>
          Core sizes<\/td>12 mm, 17 mm, 23 mm, 31 mm<\/td><\/tr>
          Number of part numbers<\/td>116<\/td><\/tr>
          Core materials<\/td>Nanocrystalline (SCF\u2011X), high\u2011heat Mn\u2011Zn ferrite 10HT (SCT\u2011X)<\/td><\/tr><\/tbody><\/table><\/figure>

          For detailed per\u2011part ratings, engineers should refer directly to the manufacturer\u2019s product brief and datasheet information according to the manufacturer datasheet.<\/p>

          Design\u2011in notes for engineers<\/h2>
          • Select material based on EMI profile and cost targets<\/strong>
            • Use SCF\u2011X nanocrystalline variants when broadband EMI suppression is required, especially in designs with wideband switching spectra or aggressive switching edge rates.<\/li>
            • Prefer SCT\u2011X ferrite variants when noise appears in narrower bands or when cost optimization is a priority, leveraging the high\u2011heat\u2011resistant 10HT ferrite and high Bs.<\/li><\/ul><\/li>
            • Match inductance and current to the line conditions<\/strong>
              • Start from the grid voltage (up to 500 VAC\/VDC), nominal current and expected switching frequency to identify the required inductance value that meets conducted emission limits.<\/li>
              • Ensure that the selected choke\u2019s current rating and temperature range provide adequate margin under worst\u2011case load and ambient temperatures.<\/li><\/ul><\/li>
              • Consider DCR and thermal behavior early in the design<\/strong>
                • Low DCR values help reduce power loss and self\u2011heating; however, verify that total losses remain acceptable at maximum current, especially in sealed or high\u2011density enclosures.<\/li>
                • The \u221240 \u00b0C to +130 \u00b0C operating range supports many industrial environments, but layout, airflow and nearby heat sources should be considered in the thermal model.<\/li><\/ul><\/li>
                • Use platform consistency to simplify layout and variants<\/strong>
                  • With multiple core sizes and shared footprint approaches, the SCF\u2011X and SCT\u2011X series allow one PCB design to support several power levels by populating different part numbers.<\/li>
                  • This platform approach reduces re\u2011layout effort when moving from performance\u2011driven to cost\u2011optimized variants or when scaling current capability within the same product family.<\/li><\/ul><\/li>
                  • Plan for EMC compliance and safety from the outset<\/strong>
                    • Place the common mode choke near the mains or single\u2011phase input and coordinate its use with line filters, X\/Y capacitors and surge protection devices.<\/li>
                    • Take advantage of the UL 94 V\u20110 base and cap and toroidal construction when building safety\u2011critical filters for industrial drives, HVAC systems and robotics.<\/li><\/ul><\/li>
                    • Leverage standardization for purchasing and lifecycle management<\/strong>
                      • The broad but structured portfolio enables company\u2011wide preferred part lists and reduces the need for custom wound chokes.<\/li>
                      • Working within a single, well\u2011documented series supports long\u2011term availability, easier second\u2011source evaluation and clearer communication between design and procurement teams.<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                        YAGEO Group\u2019s SCF\u2011X and SCT\u2011X single\u2011phase common mode chokes are EMI filter components for industrial power systems that must meet stringent EMC requirements without sacrificing efficiency or board space. The\u00a0YAGEO\u00a0single\u2011phase\u00a0common mode chokes\u00a0combine a wide inductance and current range with two\u00a0core\u00a0material options, giving design engineers a single platform for both high\u2011performance… <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-4313","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/4313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=4313"}],"version-history":[{"count":4,"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/4313\/revisions"}],"predecessor-version":[{"id":4320,"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/4313\/revisions\/4320"}],"wp:attachment":[{"href":"https:\/\/theemcnews.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=4313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}