{"id":7278,"date":"2026-02-18T09:30:00","date_gmt":"2026-02-18T08:30:00","guid":{"rendered":"https:\/\/tps-elektronik.com\/?p=7278"},"modified":"2026-02-19T13:43:18","modified_gmt":"2026-02-19T12:43:18","slug":"fsp400-50aac-80-plus-bronze-atx-400w-power-supply","status":"publish","type":"post","link":"https:\/\/tps-elektronik.com\/en\/fsp400-50aac-80-plus-bronze-atx-400w-power-supply\/","title":{"rendered":"FSP400-50AAC: 80 PLUS Bronze ATX 400 W Power Supply for Industrial and PC Systems"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Overview<\/h2>\n\n\n\n<p>The <strong><a href=\"https:\/\/www.shop-tps.com\/de\/shop\/fsp400-50aac-19374#attr=\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">FSP400-50AAC<\/a><\/strong> is an <a href=\"https:\/\/www.shop-tps.com\/web\/image\/66910?unique=d0beed3a7ab996d62e6c0017a4822286096779f6\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ATX 400 W switching power supply<\/a> designed for desktop PCs, industrial PCs (IPC), embedded systems, and light workstation platforms.<\/p>\n\n\n\n<p>It combines:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>80 PLUS Bronze efficiency<\/li>\n\n\n\n<li>Universal AC input<\/li>\n\n\n\n<li>Defined electrical protection functions<\/li>\n\n\n\n<li>Standard ATX mechanical compatibility<\/li>\n<\/ul>\n\n\n\n<p>The unit is intended for systems that require predictable power delivery, defined safety approvals, and compatibility with established ATX platforms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Key Features at a Glance<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rated power:<\/strong> 400 W<\/li>\n\n\n\n<li><strong>Form factor:<\/strong> PS\/2 ATX (140 \u00d7 150 \u00d7 86 mm)<\/li>\n\n\n\n<li><strong>Input range:<\/strong> 90\u2013264 VAC, 47\u201363 Hz<\/li>\n\n\n\n<li><strong>Efficiency class:<\/strong> 80 PLUS Bronze<\/li>\n\n\n\n<li><strong>Output rails:<\/strong> +3.3 V, +5 V, +12 V, \u221212 V, +5 Vsb<\/li>\n\n\n\n<li><strong>Protection functions:<\/strong> OCP, OTP, OVP<\/li>\n\n\n\n<li><strong>Cooling:<\/strong> Integrated 120 mm fan<\/li>\n\n\n\n<li><strong>MTBF (specified):<\/strong> 100,000 hours<\/li>\n\n\n\n<li><strong>Safety reference:<\/strong> CB certification to IEC 62368-1<\/li>\n\n\n\n<li><strong>Platform alignment:<\/strong> Intel ATX12V v1.4<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/01\/1_Product_ATX-PC-Power-Supply_FSP400-50AAC.jpg\" alt=\"FSP400-50AAC ATX 400W power supply product photo showing metal enclosure, AC inlet, power switch, and top-mounted fan grille for cooling airflow.\" class=\"wp-image-7280\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Input &amp; Efficiency<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Universal AC Input<\/h3>\n\n\n\n<p>The FSP400-50AAC operates across <strong>90\u2013264 VAC<\/strong> and <strong>47\u201363 Hz<\/strong>, supporting deployment in different regions without requiring multiple PSU variants.<\/p>\n\n\n\n<p>For system integrators, this can simplify logistics and spare part management in internationally deployed systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">80 PLUS Bronze Efficiency<\/h3>\n\n\n\n<p>The unit carries an <strong>80 PLUS Bronze<\/strong> rating, indicating efficiency levels aligned with Bronze-class requirements under defined load conditions.<\/p>\n\n\n\n<p>Higher conversion efficiency can contribute to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduced internal heat generation<\/li>\n\n\n\n<li>Lower cooling demand inside the chassis<\/li>\n\n\n\n<li>Improved overall system thermal behavior<\/li>\n<\/ul>\n\n\n\n<p>Efficiency performance depends on load profile and operating conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Output Rails &amp; Electrical Performance<\/h2>\n\n\n\n<p>The power supply provides standard ATX rails:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>+3.3 V<\/strong><\/li>\n\n\n\n<li><strong>+5 V<\/strong><\/li>\n\n\n\n<li><strong>+12 V<\/strong><\/li>\n\n\n\n<li><strong>\u221212 V<\/strong><\/li>\n\n\n\n<li><strong>+5 V standby (5Vsb)<\/strong><\/li>\n<\/ul>\n\n\n\n<p>These rails support common motherboard logic, storage devices, add-in cards, cooling systems, and standby functions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ripple &amp; Noise<\/h3>\n\n\n\n<p>Specified ripple and noise limits include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>50 mV p-p<\/strong> on +3.3 V, +5 V, and +5 Vsb<\/li>\n\n\n\n<li><strong>120 mV p-p<\/strong> on +12 V and \u221212 V<\/li>\n<\/ul>\n\n\n\n<p>Controlled ripple levels are relevant in applications involving SSDs, communication modules, I\/O cards, and other peripherals sensitive to supply noise.<\/p>\n\n\n\n<p>Actual system stability depends on total load distribution and integration quality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Protection Functions<\/h2>\n\n\n\n<p>The FSP400-50AAC includes the following protection mechanisms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>OCP \u2013 Over Current Protection<\/strong><\/li>\n\n\n\n<li><strong>OVP \u2013 Over Voltage Protection<\/strong><\/li>\n\n\n\n<li><strong>OTP \u2013 Over Temperature Protection<\/strong><\/li>\n<\/ul>\n\n\n\n<p>These functions are designed to limit escalation of electrical faults such as overload, abnormal temperature rise, or voltage excursions. Protection behavior depends on system configuration and fault conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mechanical Integration<\/h2>\n\n\n\n<p>The PSU follows the <strong>PS\/2 ATX mechanical envelope<\/strong> with dimensions of:<\/p>\n\n\n\n<p><strong>140 \u00d7 150 \u00d7 86 mm<\/strong><\/p>\n\n\n\n<p>This format supports integration into standard ATX-compatible desktop cases and many industrial PC enclosures.<\/p>\n\n\n\n<p>Cooling is provided by an integrated <strong>120 mm fan<\/strong>, aligned with common chassis airflow concepts.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/tps-elektronik.com\/wp-content\/uploads\/2026\/01\/2_Product_ATX-PC-Power-Supply_FSP400-50AAC.jpg\" alt=\"FSP400-50AAC mechanical drawing showing ATX dimensions (140 x 150 x 86 mm), airflow direction, and connector\/cable layout for chassis integration.\" class=\"wp-image-7283\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Compliance &amp; Platform Alignment<\/h2>\n\n\n\n<p>For compliance-driven projects, documented approvals are often required during system validation.<\/p>\n\n\n\n<p>The FSP400-50AAC is positioned as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CB certified to IEC 62368-1<\/strong><\/li>\n\n\n\n<li>Designed to align with <strong>Intel ATX12V v1.4<\/strong><\/li>\n<\/ul>\n\n\n\n<p>The product page references additional approvals (e.g., UL, FCC, T\u00dcV, CE, CCC, RoHS). Applicability may depend on the specific production version and target market.<\/p>\n\n\n\n<p>System integrators should verify approval scope for their intended deployment region.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Reliability Considerations<\/h2>\n\n\n\n<p>The power supply specifies an <strong>MTBF of 100,000 hours<\/strong> (mean time between failures), based on manufacturer-defined conditions.<\/p>\n\n\n\n<p>MTBF is a statistical reliability indicator and does not represent a guaranteed service life. Actual lifetime depends on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ambient temperature<\/li>\n\n\n\n<li>Load profile<\/li>\n\n\n\n<li>Ventilation and airflow<\/li>\n\n\n\n<li>Operating environment<\/li>\n<\/ul>\n\n\n\n<p>For industrial or long-runtime applications, thermal design and proper derating remain essential.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Typical Application Areas<\/h2>\n\n\n\n<p>The FSP400-50AAC may be suitable for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Desktop PCs requiring a standard ATX 400 W PSU<\/li>\n\n\n\n<li>Industrial PCs with universal AC input requirements<\/li>\n\n\n\n<li>Embedded systems using legacy ATX platforms<\/li>\n\n\n\n<li>Light workstations and entry-level servers within 400 W power budgets<\/li>\n<\/ul>\n\n\n\n<p>System-level validation is recommended to confirm rail loading, protection behavior, and thermal performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Is the FSP400-50AAC suitable for international installations?<\/h3>\n\n\n\n<p>It supports 90\u2013264 VAC and 47\u201363 Hz input, which enables use across regions with different mains standards.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What output rails are available?<\/h3>\n\n\n\n<p>+3.3 V, +5 V, +12 V, \u221212 V, and +5 V standby (5Vsb), covering standard ATX requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why is low ripple relevant?<\/h3>\n\n\n\n<p>Lower ripple and noise levels can support stable operation of storage devices, communication interfaces, and sensitive peripherals. System performance also depends on PCB layout and overall integration.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Request Pricing or Integration Support<\/h2>\n\n\n\n<p>For projects involving the FSP400-50AAC, <a href=\"https:\/\/tps-elektronik.com\/en\/contact\/\" type=\"page\" id=\"1154\">TPS Elektronik<\/a> can support:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Technical documentation requests<\/li>\n\n\n\n<li>Availability and sourcing inquiries<\/li>\n\n\n\n<li>Integration guidance (mechanical fit, rail budgeting, validation considerations)<\/li>\n<\/ul>\n\n\n\n<p>Please contact our team to discuss your specific system requirements.<\/p>\n\n\n<style id=\"wpforms-css-vars-4659-block-f35f8256-11f5-41de-8b8d-b7d78c50eb2b\">\n\t\t\t\t#wpforms-4659.wpforms-block-f35f8256-11f5-41de-8b8d-b7d78c50eb2b {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 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This article reviews specifications, integration aspects, and typical industrial and PC use cases.<\/p>\n","protected":false},"author":6,"featured_media":7301,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-7278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-production"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>FSP400-50AAC ATX 400 W Power Supply \u2013 80 PLUS Bronze with Universal Input<\/title>\n<meta name=\"description\" content=\"Technical overview of the FSP400-50AAC ATX 400W power supply with 80 PLUS Bronze efficiency, universal input, protection features, and IPC integration details.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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