{"id":6421,"date":"2026-06-16T03:11:32","date_gmt":"2026-06-16T03:11:32","guid":{"rendered":"https:\/\/materialparts.com\/ss14\/"},"modified":"2026-06-16T03:11:32","modified_gmt":"2026-06-16T03:11:32","slug":"ss14","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ss14\/","title":{"rendered":"SS14"},"content":{"rendered":"

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

The SS14 is a 40V, 1A Schottky barrier rectifier diode in an SMA (DO-214AC) surface-mount package. With a low forward voltage drop of 0.5V at 1A and fast switching, it is the surface-mount equivalent of the 1N5819 for space-constrained designs requiring efficient power rectification.<\/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
Peak Repetitive Reverse Voltage<\/td>\n40V<\/td>\n<\/tr>\n
Average Rectified Forward Current<\/td>\n1A<\/td>\n<\/tr>\n
Peak Forward Surge Current<\/td>\n30A (8.3ms)<\/td>\n<\/tr>\n
Forward Voltage<\/td>\n0.5V (max at IF=1A)<\/td>\n<\/tr>\n
Reverse Current<\/td>\n0.5mA (max at VR=40V)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55C to +150C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSMA (DO-214AC)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1A rating in compact SMA package<\/li>\n
  • Low forward voltage: 0.5V at 1A<\/li>\n
  • Fast switching (Schottky barrier)<\/li>\n
  • 30A surge current capability<\/li>\n
  • Surface-mount SMA footprint<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Low-current buck converter catch diode<\/li>\n
    • Reverse polarity protection<\/li>\n
    • Signal rectification<\/li>\n
    • Battery powered equipment<\/li>\n
    • Small DC-DC converters<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SS14 is a 40V, 1A Schottky barrier rectifier diode in an SMA (DO-214AC) surface-mount package. With a low forward voltage drop of 0.5V at 1A and fast switching, it is the surface-mount equivalent of the 1N5819 for space-constrained designs requiring efficient power rectification. Key Specifications Peak Repetitive Reverse Voltage 40V Average Rectified […]<\/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":[30,13],"tags":[],"chip_brand":[286],"class_list":["post-6421","post","type-post","status-publish","format-standard","hentry","category-ac-dc-converters","category-integrated-circuits-ics","chip_brand-generic"],"acf":{"brief_explanation":"40V 1A Schottky diode, 0.5V Vf, SMA (DO-214AC), SMD 1N5819 equivalent","date_code":"","package_case":"SMA \/ DO-214AC (5.20 x 2.60 x 2.15 mm)","in_stock":500000,"datasheet":"https:\/\/www.mccsemi.com\/pdf\/Diodes\/SS3x-SMA.pdf","price":"$0.02 @ 1ku","product_introduction":"The SS14 is a 40V, 1A Schottky barrier rectifier diode in an SMA (DO-214AC) surface-mount package. It is the surface-mount equivalent of the through-hole 1N5819, offering the same 0.5-0.6V low forward voltage drop and fast switching in a compact SMD footprint. The Schottky barrier construction provides negligible reverse recovery time, making it ideal for switching power supply applications. The SMA package is the most widely used SMD diode footprint, compatible with automated assembly and offering good thermal performance. The SS14 is commonly used as a catch diode in 1A-class buck converters and for reverse polarity protection in portable electronics.","working_principle":"The SS14 uses a metal-semiconductor (Schottky) junction. When forward-biased, majority carriers cross from the N-type semiconductor into the metal with a low energy barrier, producing the 0.5V forward drop at 1A. The absence of minority carrier storage means negligible reverse recovery time, enabling fast switching in power conversion circuits. This is critical for buck converters operating at 100kHz-1MHz where PN diode recovery losses would be significant.","pin_description":"
      Terminal<\/th>Name<\/th>Marking<\/th>Description<\/th><\/tr>
      1<\/td>Anode<\/td>-<\/td>Positive terminal (no band side)<\/td><\/tr>
      2<\/td>Cathode<\/td>Band\/stripe<\/td>Negative terminal (band side)<\/td><\/tr><\/table>","application_scenarios":"
      • 1A Buck Converter Catch Diode:<\/b> Freewheeling diode for MP1584 and similar 1-3A buck converters with 0.5V Vf minimizing conduction losses<\/li>
      • Reverse Polarity Protection:<\/b> Series protection at power input with only 0.5V drop protecting circuitry from reverse connection in battery-powered devices<\/li>
      • Small DC-DC Output Rectification:<\/b> Rectifies the output of forward and flyback converters with fast recovery preventing reverse current during switch transitions<\/li><\/ul>","alternative_models":"
        Model<\/th>VR<\/th>IF<\/th>Vf<\/th>Key Difference<\/th><\/tr>
        1N5819<\/td>40V<\/td>1A<\/td>0.6V<\/td>Through-hole DO-41<\/td><\/tr>
        SS24<\/td>40V<\/td>2A<\/td>0.5V<\/td>2A, same package<\/td><\/tr>
        SS34<\/td>40V<\/td>3A<\/td>0.55V<\/td>3A, same package<\/td><\/tr>
        B140<\/td>40V<\/td>1A<\/td>0.5V<\/td>SMB package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6421","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=6421"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6421\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6421"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6421"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}