{"id":18898,"date":"2026-10-10T17:12:25","date_gmt":"2026-10-10T09:12:25","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/"},"modified":"2026-10-10T17:12:25","modified_gmt":"2026-10-10T09:12:25","slug":"power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/","title":{"rendered":"Power Supply Burn-In Test: Request the Procedure, Coverage and Result Before a Life Claim"},"content":{"rendered":"<p class=\"standfirst\">A power supply burn-in test is useful only when the purchaser can identify the units, the approved procedure and the actual result. \u201cAged\u201d is not a test report, and hours on a bench do not by themselves establish years of service life.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0e2a\u0e32\u0e23\u0e1a\u0e31\u0e0d<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u0e2a\u0e25\u0e31\u0e1a<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Define_the_claim_before_requesting_the_process\" >Define the claim before requesting the process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Anchor_the_record_to_the_full_delivered_model\" >Anchor the record to the full delivered model<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Request_a_controlled_procedure_not_an_invented_recipe\" >Request a controlled procedure, not an invented recipe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Keep_the_setup_reproducible\" >Keep the setup reproducible<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#A_useful_result_includes_coverage_and_disposition\" >A useful result includes coverage and disposition<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Do_not_convert_a_screening_record_into_a_life_promise\" >Do not convert a screening record into a life promise<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Frequently_asked_questions\" >Frequently asked questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Does_%E2%80%9C100_burn-in%E2%80%9D_identify_the_test_conditions\" >Does \u201c100% burn-in\u201d identify the test conditions?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Can_I_use_a_JEDEC_HTOL_duration_as_the_power-supply_burn-in_time\" >Can I use a JEDEC HTOL duration as the power-supply burn-in time?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Does_passing_a_screen_prove_a_specified_number_of_service_years\" >Does passing a screen prove a specified number of service years?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Do_the_application_images_show_WEHOs_factory_tests\" >Do the application images show WEHO\u2019s factory tests?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Why_keep_the_full_model_and_lot_information\" >Why keep the full model and lot information?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.wehopower.com\/th\/news\/power-supply-burn-in-test-request-the-procedure-coverage-and-result-before-a-life-claim\/#Can_a_photograph_replace_the_actual_screening_record\" >Can a photograph replace the actual screening record?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Define_the_claim_before_requesting_the_process\"><\/span>Define the claim before requesting the process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ask what the supplier means by ageing or burn-in for the exact order. Is the document describing a production screening step, a sample qualification exercise, a functional check, or an accelerated reliability study? Keep those purposes separate. They can involve different populations, procedures and conclusions.<\/p>\n<p><a href=\"https:\/\/www.ti.com\/quality-reliability\/reliability\/testing.html\" target=\"_blank\" rel=\"noopener\">Texas Instruments\u2019 reliability-testing overview<\/a> describes accelerated stresses and HTOL in the context of semiconductor devices. It does not establish a JEDEC burn-in requirement, temperature or duration for a complete WEHO power supply. That distinction is a useful reminder: the name of a component-level method cannot substitute for an order-linked finished-product procedure.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/01-application-a-20.png?quality=85&strip=all\" alt=\"Power Supply Burn-In Test: Request the Procedure, Coverage and Result Before a Life Claim  title=\" width=\"1536\" height=\"1024\" power supply burn-in test: request the coverage and result before life claim title =\"\"><\/p>\n<p class=\"caption-note\">Illustrative OEM acceptance station: the exact-source RSP-250-12 is fixed to a metal plate with its genuine guarded terminals connected to a separate fixture. Any display values are illustrative, not a recorded WEHO measurement. This is a source-referenced equipment arrangement, not a photograph of the WEHO production process or evidence of a completed burn-in result.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Anchor_the_record_to_the_full_delivered_model\"><\/span>Anchor the record to the full delivered model<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The accepted specimen here is RSP-250-12, with a 12 V\/20 A output marking. The retained complete WEHO RSP-250 specification also lists the corresponding nominal output row. The photographed input marking is 100\u2013240V\/2.5A, with 50\/60Hz and an original power-factor legend. These literal specimen markings are not silently replaced by broader family operating ranges or test-condition values.<\/p>\n<p>Record the purchase order, full model, hardware or document revision where supplied, and the actual serial or lot identifier used in the inspection. A report for a neighbouring voltage variant or an unidentified family sample does not establish coverage of the received units. Keep the source photograph and the accepted order documents linked to the report.<\/p>\n<p>The RSP series name is also not a license to treat every variant as having the same exact output power. Use the accepted full-model row and its conditions. This article does not infer an actual test load from the 20 A marking, and it does not prescribe a universal percentage of that value.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Request_a_controlled_procedure_not_an_invented_recipe\"><\/span>Request a controlled procedure, not an invented recipe<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For the relevant process, obtain its identifier and revision, the intended population, the approved input and load conditions, the environmental conditions, the duration or sequence and the acceptance criteria. If those fields are absent, record them as unresolved. Do not fill them with a familiar temperature or time taken from a semiconductor standard, another supply or an internet example.<\/p>\n<p>The procedure should state what is observed before, during and after the process, and how interruptions or abnormal results are handled. The purchaser needs to know whether the result refers to every delivered unit, a sampled group or an engineering prototype. A generic brochure sentence does not establish that distinction.<\/p>\n<p>Any work involving mains, exposed terminals, elevated temperatures or test loads needs an approved safe arrangement and qualified personnel. The documentary checklist below is not an instruction to run the supply beyond accepted limits or to devise a hazardous improvised test.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-application-b-20.png?quality=85&strip=all\" alt=\"Power Supply Burn-In Test: Request the Procedure, Coverage and Result Before a Life Claim  title=\" width=\"1536\" height=\"1024\" power supply burn-in test: request the coverage and result before life claim title =\"\"><\/p>\n<p class=\"caption-note\">A different dry end-of-line fixture uses a lower-right, screw-mounted RSP specimen and separate interface equipment. The image illustrates physical connection and source identity only; it supplies no test duration, temperature, pass indication or lifetime claim.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Keep_the_setup_reproducible\"><\/span>Keep the setup reproducible<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Record the actual equipment and its identification, the fixture or mounting arrangement, the input source, the load configuration and the observation points used by the approved procedure. Where calibration or equipment status is relevant to that procedure, retain the corresponding evidence. Describe any deviation rather than making the setup appear compliant through a caption or a model name.<\/p>\n<p>For this specimen, the complete mechanical drawing gives a 215 mm front-to-rear length, 115 mm terminal-edge width and 30 mm body height. It depicts bottom M4 mounting locations and the associated 3 mm engagement limit, with side M4 details carrying a 5 mm limit. The supply is an enclosed, screw-mounted unit, not a DIN-rail product. Those source facts support the illustrative plate mounting; they do not certify a hidden thread engagement or validate a test fixture.<\/p>\n<p>The authentic front has nine guarded screw clamps. With the blue adjustment component at the left, the grouped output positions precede protective earth, N and L. Preserve that actual anatomy. A wire in a ventilation opening, a fabricated terminal or an improvised mounting foot is a physical error, not a documentation issue that can be corrected by prose.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/03-product-detail-20.png?quality=85&strip=all\" alt=\"Power Supply Burn-In Test: Request the Procedure, Coverage and Result Before a Life Claim  title=\" width=\"1536\" height=\"1024\" power supply burn-in test: request the coverage and result before life claim title =\"\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"A_useful_result_includes_coverage_and_disposition\"><\/span>A useful result includes coverage and disposition<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Request the actual tested population or identifiers, the procedure revision, the recorded observations and the decision under the applicable criteria. Include interruptions, rejects and deviations, together with their disposition. A clean summary that omits those records cannot tell the purchaser how the process covered the order.<\/p>\n<p>Where a failed unit is repaired or replaced, keep its identity and the required follow-up process traceable rather than resetting the record to a new unexplained pass. This is a proposed procurement record structure, not a statement that WEHO follows a particular rework or retest policy.<\/p>\n<p>Also distinguish a production acceptance record from reliability monitoring. <a href=\"https:\/\/www.ti.com\/lit\/an\/sboa144\/sboa144.pdf\" target=\"_blank\" rel=\"noopener\">TI\u2019s authored discussion of testing and screening<\/a> warns, within its semiconductor scope, that periodic process-monitor samples are not acceptance tests on a specific component group and that extra screening does not replace application qualification. It does not give a WEHO finished-supply lifetime guarantee.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/04-engineering-context-24.png?quality=85&strip=all\" alt=\"Power Supply Burn-In Test: Request the Procedure, Coverage and Result Before a Life Claim  title=\" width=\"1536\" height=\"1024\" power supply burn-in test: request the coverage and result before life claim title =\"\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Do_not_convert_a_screening_record_into_a_life_promise\"><\/span>Do not convert a screening record into a life promise<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A recorded screening step supports only the conclusion justified by its procedure, coverage and results. Predicting useful life in a particular machine requires its own assumptions and evidence, including the relevant use conditions and failure mechanisms. The number of hours in one process is not automatically an acceleration factor or a warranted field lifetime.<\/p>\n<p>Keep manufacturer process evidence, finished-equipment acceptance and long-term service claims as separate records. This lets engineering and purchasing ask a precise question without overstating what the available report proves.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_asked_questions\"><\/span>Frequently asked questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Does_%E2%80%9C100_burn-in%E2%80%9D_identify_the_test_conditions\"><\/span>Does \u201c100% burn-in\u201d identify the test conditions?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Ask for the covered unit identifiers and the order-applicable procedure, conditions, observations and criteria. The phrase alone is incomplete.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_use_a_JEDEC_HTOL_duration_as_the_power-supply_burn-in_time\"><\/span>Can I use a JEDEC HTOL duration as the power-supply burn-in time?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Not from this article. The cited TI overview concerns semiconductor reliability methods, not an approved finished-supply procedure.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_passing_a_screen_prove_a_specified_number_of_service_years\"><\/span>Does passing a screen prove a specified number of service years?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No automatic lifetime claim follows. Retain the scope and assumptions of any separate life assessment or warranty.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Do_the_application_images_show_WEHOs_factory_tests\"><\/span>Do the application images show WEHO\u2019s factory tests?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. They are independently reviewed source-referenced illustrations. No factory process, measured load, duration or result is depicted as evidence.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_keep_the_full_model_and_lot_information\"><\/span>Why keep the full model and lot information?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>They link the report to the actual delivered population and prevent a family example from being mistaken for the received units.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_a_photograph_replace_the_actual_screening_record\"><\/span>Can a photograph replace the actual screening record?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. It can support physical identity and arrangement, not undocumented coverage, criteria or observations.<\/p>","protected":false},"excerpt":{"rendered":"<p>A procurement-ready evidence record for an exact power-supply population, without invented stress conditions or a screening-to-lifetime shortcut.<\/p>","protected":false},"author":2,"featured_media":18894,"parent":0,"menu_order":2,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-18898","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/18898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/comments?post=18898"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/18898\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media\/18894"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media?parent=18898"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news_category?post=18898"}],"curies":[{"name":"\u0e2b\u0e19\u0e49\u0e32","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}