{"id":3409,"date":"2026-06-04T04:31:05","date_gmt":"2026-06-04T04:31:05","guid":{"rendered":"https:\/\/materialparts.com\/mbrs140t3g\/"},"modified":"2026-06-04T04:31:05","modified_gmt":"2026-06-04T04:31:05","slug":"mbrs140t3g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mbrs140t3g\/","title":{"rendered":"MBRS140T3G"},"content":{"rendered":"

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

The MBRS140T3G from onsemi is a surface-mount Schottky power rectifier rated at 1A, 40V in an SMB (DO-214AA) package. It features a very low forward voltage drop of 0.55V max at 1A, fast switching with virtually zero reverse recovery time, and AEC-Q101 qualification for automotive applications.<\/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
Peak Reverse Voltage<\/td>\n40 V<\/td>\n<\/tr>\n
Average Forward Current<\/td>\n1.0 A<\/td>\n<\/tr>\n
\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0645\u0627\u0645\u064a (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649)<\/td>\n0.6 V @ 1A, 25\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0639\u0643\u0633\u064a (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649)<\/td>\n1.0 mA @ 25\u00b0C<\/td>\n<\/tr>\n
Non-Repetitive Surge Current<\/td>\n40 A<\/td>\n<\/tr>\n
Operating Junction Temp<\/td>\n-65\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSMB (DO-214AA)<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0624\u0647\u0644\u0627\u062a<\/td>\nAEC-Q101<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Very low forward voltage drop: 0.55V max @ 1A<\/li>\n
  • Zero reverse recovery time (Schottky barrier)<\/li>\n
  • Guard-ring for stress protection<\/li>\n
  • Highly stable oxide-passivated junction<\/li>\n
  • Compact surface-mount SMB package with J-bend leads<\/li>\n
  • AEC-Q101 qualified and PPAP capable<\/li>\n
  • ESD rating: HBM > 8000V, Machine Model > 400V<\/li>\n
  • Pb-free device<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • DC-DC converter output rectification<\/li>\n
    • Reverse polarity protection<\/li>\n
    • Freewheeling diode in switching circuits<\/li>\n
    • Battery-powered equipment<\/li>\n
    • Automotive power supply circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MBRS140T3G from onsemi is a surface-mount Schottky power rectifier rated at 1A, 40V in an SMB (DO-214AA) package. It features a very low forward voltage drop of 0.55V max at 1A, fast switching with virtually zero reverse recovery time, and AEC-Q101 qualification for automotive applications. Key Specifications Peak Reverse Voltage 40 V […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,56],"tags":[],"chip_brand":[144],"class_list":["post-3409","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","chip_brand-on"],"acf":{"brief_explanation":"1A 40V Schottky rectifier, 0.55V VF max, SMB package, AEC-Q101 qualified","date_code":"","package_case":"SMB (DO-214AA) (4.3 x 3.6 x 2.2 mm)","in_stock":13701,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/MBRS140T3-D.PDF","price":"$0.167 @ 1ku","product_introduction":"The MBRS140T3G from onsemi is a surface-mount Schottky barrier power rectifier rated for 1A average forward current and 40V peak reverse voltage. Employing the Schottky barrier principle with epitaxial construction and oxide passivation, it achieves a very low forward voltage drop of 0.55V max at 1A. The majority-carrier conduction mechanism eliminates minority carrier storage, resulting in virtually zero reverse recovery time ideal for high-frequency switching applications. It is AEC-Q101 qualified and PPAP capable for automotive use.","working_principle":"The MBRS140T3G operates based on the Schottky barrier principle: (1) Metal-Semiconductor Junction: Unlike conventional PN junction diodes, a Schottky diode forms a rectifying junction between metal (typically molybdenum or tungsten) and N-type silicon. This creates a lower barrier potential, resulting in a lower forward voltage drop (0.55V vs 0.7-1.0V for silicon PN diodes). (2) Majority Carrier Conduction: Current flows via majority carriers (electrons) only, eliminating minority carrier storage and the associated reverse recovery time seen in PN diodes. This enables very fast switching with negligible recovery losses at high frequencies. (3) Guard-Ring Protection: An integrated guard-ring around the Schottky junction provides overvoltage and ESD protection, enhancing reliability under stress conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Cathode<\/td>Cathode<\/td>Negative terminal (marked with band)<\/td><\/tr>
      2<\/td>Anode<\/td>Anode<\/td>Positive terminal<\/td><\/tr><\/table>","application_scenarios":"
      • Output rectification in DC-DC converters with high efficiency requirements<\/li>
      • Reverse polarity protection in battery-powered devices<\/li>
      • Freewheeling diode in motor driver and relay circuits<\/li>
      • Automotive charging and lighting system rectification<\/li>
      • Switching power supply secondary-side rectification<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>VR<\/th>VF<\/th>Notes<\/th><\/tr>
        SS14-E3\/9AT<\/td>Vishay<\/td>40V<\/td>0.5V<\/td>SMA package alternative<\/td><\/tr>
        MBR120VLSFT1G<\/td>onsemi<\/td>20V<\/td>0.34V<\/td>Lower voltage, lower VF<\/td><\/tr>
        SB140-E3\/54<\/td>Vishay<\/td>40V<\/td>0.5V<\/td>DO-214AA equivalent<\/td><\/tr>
        CDBM1400-G<\/td>Comchip<\/td>40V<\/td>0.5V<\/td>Lower cost option<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3409","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=3409"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3409\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3409"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3409"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}