{"id":8433,"date":"2026-06-29T00:47:51","date_gmt":"2026-06-29T00:47:51","guid":{"rendered":"https:\/\/materialparts.com\/ss24\/"},"modified":"2026-06-29T00:47:51","modified_gmt":"2026-06-29T00:47:51","slug":"ss24","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ss24\/","title":{"rendered":"SS24"},"content":{"rendered":"<h2>\u4ea7\u54c1\u6982\u89c8<\/h2>\n<p>The SS24 from onsemi is a surface-mount Schottky barrier power rectifier rated at 40 V, 2 A in an SMB (DO-214AA) package. It employs the Schottky Barrier principle with epitaxial construction and oxide passivation, providing low forward voltage drop of 0.50 V max at 2 A, ideal for low-voltage high-frequency switching power supplies, freewheeling diodes, and polarity protection.<\/p>\n<h2>\u4e3b\u8981\u89c4\u683c<\/h2>\n<ul>\n<li>VRRM: 40 V<\/li>\n<li>IO: 2 A (average rectified, TL = 132\u00b0C)<\/li>\n<li>VF: 0.50 V max @ 2 A (25\u00b0C), 0.46 V @ 2 A (125\u00b0C)<\/li>\n<li>IR: 0.4 mA max @ 40 V (25\u00b0C), 5.7 mA @ 40 V (100\u00b0C)<\/li>\n<li>IFSM: 75 A (8.3 ms half-sine)<\/li>\n<li>dv\/dt: 10,000 V\/\u00b5s<\/li>\n<li>Tj: -55\u00b0C to +150\u00b0C<\/li>\n<li>Package: SMB (DO-214AA) (4.32 \u00d7 3.56 \u00d7 2.20 mm)<\/li>\n<li>Weight: 95 mg<\/li>\n<\/ul>\n<h2>\u7279\u70b9<\/h2>\n<ul>\n<li>Compact SMB package with J-bend leads<\/li>\n<li>Highly stable oxide passivated junction<\/li>\n<li>Guardring for over-voltage protection<\/li>\n<li>Low forward voltage drop<\/li>\n<li>Pb-Free, RoHS compliant<\/li>\n<li>ESD HBM Class 3B (> 8000 V)<\/li>\n<\/ul>\n<h2>\u5e94\u7528<\/h2>\n<ul>\n<li>Low-voltage high-frequency SMPS<\/li>\n<li>Freewheeling diode in buck converters<\/li>\n<li>Reverse polarity protection<\/li>\n<li>DC-DC converter output rectification<\/li>\n<li>Battery charging circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Product Overview The SS24 from onsemi is a surface-mount Schottky barrier power rectifier rated at 40 V, 2 A in an SMB (DO-214AA) package. It employs the Schottky Barrier principle with epitaxial construction and oxide passivation, providing low forward voltage drop of 0.50 V max at 2 A, ideal for low-voltage high-frequency switching power supplies, [&hellip;]<\/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":[57,13],"tags":[],"chip_brand":[144],"class_list":["post-8433","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"Schottky rectifier 40V 2A, 0.50V VF, SMB (DO-214AA)","date_code":"","package_case":"SMB (DO-214AA) (4.32 \u00d7 3.56 \u00d7 2.20 mm)","in_stock":13087,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/ss24-d.pdf","price":"$0.09 @ 1ku","product_introduction":"The SS24 from onsemi is a Schottky barrier power rectifier designed for low-voltage, high-frequency applications. Using the Schottky Barrier principle in a metal-to-silicon power rectifier with epitaxial construction and oxide passivation, the device achieves a low forward voltage drop of 0.50 V maximum at 2 A. The guardring structure provides over-voltage protection during transient events. The SMB (DO-214AA) package with J-bend leads is optimized for automated handling in surface-mount assembly. The device is suitable for freewheeling, secondary rectification, and reverse polarity protection in switching power supplies where compact size and low power loss are critical.","working_principle":"The SS24 employs a Schottky barrier junction formed by the contact between a metal (typically molybdenum or chromium) and an n-type silicon epitaxial layer. Unlike conventional p-n junction diodes, the Schottky barrier is a majority-carrier device that eliminates minority carrier storage during forward conduction. This results in negligible reverse recovery time, making the device ideal for high-frequency switching applications. The epitaxial construction with oxide passivation ensures junction stability and low leakage. The guardring around the active area prevents voltage crowding at the junction edges, enhancing the avalanche capability. During forward bias, electrons flow from the n-type silicon into the metal with a barrier height that determines the forward voltage drop.","pin_description":"<table border=\"1\"><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>Cathode<\/td><td>Cathode (band marked on package)<\/td><\/tr><tr><td>2<\/td><td>Anode<\/td><td>Anode<\/td><\/tr><\/table>","application_scenarios":"<ul><li><b>Buck Converter Freewheeling<\/b>: Catch diode in synchronous\/non-synchronous buck converters with 0.50 V VF reducing conduction losses<\/li><li><b>Reverse Polarity Protection<\/b>: Series diode in battery-powered systems where 40 V rating covers automotive transients<\/li><li><b>SMPS Secondary Rectification<\/b>: 5 V \/ 3.3 V output rectification in forward and flyback converters<\/li><li><b>Battery Charging<\/b>: Discharge path protection in Li-Ion \/ Li-Po charger circuits<\/li><li><b>OR-ing Diodes<\/b>: Power supply redundancy with low VF minimizing voltage drop<\/li><\/ul>","alternative_models":"<table border=\"1\"><tr><th>Model<\/th><th>Brand<\/th><th>VRRM (V)<\/th><th>IF (A)<\/th><th>VF (V)<\/th><\/tr><tr><td>SS22<\/td><td>onsemi<\/td><td>20<\/td><td>2<\/td><td>0.50<\/td><\/tr><tr><td>SS24FL<\/td><td>onsemi<\/td><td>40<\/td><td>2<\/td><td>0.55<\/td><\/tr><tr><td>SS26<\/td><td>onsemi<\/td><td>60<\/td><td>2<\/td><td>0.70<\/td><\/tr><tr><td>B220<\/td><td>Diodes Inc<\/td><td>20<\/td><td>2<\/td><td>0.50<\/td><\/tr><tr><td>SK24<\/td><td>MCC<\/td><td>40<\/td><td>2<\/td><td>0.55<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=8433"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8433\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8433"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}