[{"data":1,"prerenderedAt":397},["ShallowReactive",2],{"blog-ict-vs-flying-probe-en":3,"header-nav-en":69},{"title":4,"description":5,"date":6,"category":7,"image":8,"readingTime":9,"wordCount":10,"timeRequired":11,"htmlContent":12,"tags":13,"slug":19,"jsonld":20},"ICT vs Flying Probe in PCBA: How to Choose the Right Electrical Test Layer","A practical engineering guide to ICT vs flying probe in PCBA, covering what each method checks, when each fits the build, and what neither method proves by itself.","2026-05-13","technology","/assets/img/blogs/2025/08/ict-vs-flying-probe.png",11,2052,"PT11M","\u003Cul>\n\u003Cli>ICT and flying probe are both \u003Cstrong>assembled-board electrical test methods\u003C/strong>, but they do not fit the same build conditions.\u003C/li>\n\u003Cli>The most useful boundary is simple: ICT is a \u003Cstrong>fixture-based\u003C/strong> electrical method, while flying probe is a \u003Cstrong>fixture-free\u003C/strong> electrical method.\u003C/li>\n\u003Cli>Neither method should be described as a replacement for SPI, AOI, X-ray, or functional test, because those layers answer different questions.\u003C/li>\n\u003Cli>A board can pass flying probe and still fail functional test. A board can pass ICT and still need hidden-joint inspection or release review.\u003C/li>\n\u003Cli>The right decision usually comes from build stability, access planning, and test intent rather than from generic claims about one method being universally better.\u003C/li>\n\u003C/ul>\n\u003Cblockquote>\n\u003Cp>\u003Cstrong>Quick Answer\u003C/strong>\nICT and flying probe both screen assembled-board electrical faults such as opens, shorts, and component-level issues, but they fit different operating conditions. ICT is the stronger fit when the program supports fixture-based access and stable test planning. Flying probe is the better fit when the build is still changing, lower volume, or not ready for fixture commitment. The decision is not which method is "best" in general. The decision is which electrical-test lane matches the board's access model, design maturity, and release path.\u003C/p>\n\u003C/blockquote>\n\u003Cp>For the broader quality-stack view that connects SPI, AOI, X-ray, ICT, flying probe, functional test, and release gates, start with the \u003Ca href=\"/en/blog/pcba-assembly-test-quality-guide\">PCBA Assembly Test and Quality Guide\u003C/a>.\u003C/p>\n\u003Ch2 id=\"table-of-contents\" data-anchor-en=\"table-of-contents\">Table of Contents\u003C/h2>\n\u003Cul>\n\u003Cli>\u003Ca href=\"#first-review\">What should engineers review first?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#what-they-check\">What do ICT and flying probe actually check?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#method-boundaries\">How do ICT and flying probe differ?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#when-ict-fits\">When does ICT fit better?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#when-flying-probe-fits\">When does flying probe fit better?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#freeze-before-selection\">What should be frozen before choosing one path?\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#next-steps\">Next steps with APTPCB\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#faq\">FAQ\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#references\">Public references\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"#author\">Author and review information\u003C/a>\u003C/li>\n\u003C/ul>\n\u003Ca id=\"first-review\">\u003C/a>\n\u003Ch2 id=\"what-should-engineers-review-first\" data-anchor-en=\"what-should-engineers-review-first\">What should engineers review first?\u003C/h2>\n\u003Cp>Start with \u003Cstrong>test intent, access model, design stability, and downstream validation needs\u003C/strong>.\u003C/p>\n\u003Cp>That order matters because \u003Ccode>ICT vs flying probe\u003C/code> is often treated as a simple equipment comparison. The stronger engineering question is:\u003C/p>\n\u003Cp>\u003Cstrong>Which electrical-test method fits the board's access plan and release path without being asked to prove something outside its lane?\u003C/strong>\u003C/p>\n\u003Cp>The first review questions should be:\u003C/p>\n\u003Col>\n\u003Cli>Is the main goal electrical defect screening on the assembled board?\u003C/li>\n\u003Cli>Does the design support a fixture-based access model, or is the program better served by a fixture-free path?\u003C/li>\n\u003Cli>Is the layout and test plan stable enough to justify a more committed electrical-test setup?\u003C/li>\n\u003Cli>What later gate still owns powered behavior, hidden-joint review, or shipment release?\u003C/li>\n\u003C/ol>\n\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Review axis\u003C/th>\n\u003Cth>What to check\u003C/th>\n\u003Cth>Why it matters\u003C/th>\n\u003Cth>What it does not prove\u003C/th>\n\u003C/tr>\n\u003C/thead>\n\u003Ctbody>\u003Ctr>\n\u003Ctd>Test intent\u003C/td>\n\u003Ctd>Whether the goal is assembled-board electrical fault screening\u003C/td>\n\u003Ctd>Keeps the method in the correct lane\u003C/td>\n\u003Ctd>Powered end-use behavior\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd>Access model\u003C/td>\n\u003Ctd>Whether the board supports fixture-based access or needs a fixture-free path\u003C/td>\n\u003Ctd>Access planning shapes the method choice\u003C/td>\n\u003Ctd>That all important risks are already covered\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd>Design stability\u003C/td>\n\u003Ctd>Whether the build is still changing or is now more stable\u003C/td>\n\u003Ctd>Stable and changing programs tolerate different test setups\u003C/td>\n\u003Ctd>Final customer release by itself\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd>Downstream gates\u003C/td>\n\u003Ctd>Which later layer still owns function, hidden joints, or final acceptance\u003C/td>\n\u003Ctd>Electrical test is only one layer in the stack\u003C/td>\n\u003Ctd>That one electrical test method replaces all others\u003C/td>\n\u003C/tr>\n\u003C/tbody>\u003C/table>\n\u003Ca id=\"what-they-check\">\u003C/a>\n\u003Ch2 id=\"what-do-ict-and-flying-probe-actually-check\" data-anchor-en=\"what-do-ict-and-flying-probe-actually-check\">What do ICT and flying probe actually check?\u003C/h2>\n\u003Cp>Both methods belong to the \u003Cstrong>electrical defect-screening layer for assembled boards\u003C/strong>.\u003C/p>\n\u003Cp>That means they are used to look for issues such as:\u003C/p>\n\u003Cul>\n\u003Cli>opens\u003C/li>\n\u003Cli>shorts\u003C/li>\n\u003Cli>connectivity problems\u003C/li>\n\u003Cli>some component-level electrical faults\u003C/li>\n\u003Cli>some orientation or value-related electrical problems, depending on the test plan\u003C/li>\n\u003C/ul>\n\u003Cp>That does \u003Cstrong>not\u003C/strong> mean they automatically prove:\u003C/p>\n\u003Cul>\n\u003Cli>visible assembly geometry\u003C/li>\n\u003Cli>hidden-joint integrity under concealed packages\u003C/li>\n\u003Cli>powered product behavior in the target application\u003C/li>\n\u003Cli>full release readiness on their own\u003C/li>\n\u003C/ul>\n\u003Cp>This boundary matters because ICT and flying probe are sometimes described too loosely as if they prove that the whole board was fully tested. They do not.\u003C/p>\n\u003Cp>They sit after assembly as electrical verification methods. Other layers still own optical review, hidden-joint inspection, powered behavior, and final release governance.\u003C/p>\n\u003Ca id=\"method-boundaries\">\u003C/a>\n\u003Ch2 id=\"how-do-ict-and-flying-probe-differ\" data-anchor-en=\"how-do-ict-and-flying-probe-differ\">How do ICT and flying probe differ?\u003C/h2>\n\u003Cp>The cleanest way to compare them is by \u003Cstrong>access posture and program fit\u003C/strong>.\u003C/p>\n\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Method\u003C/th>\n\u003Cth>What it mainly answers\u003C/th>\n\u003Cth>Best-fit posture\u003C/th>\n\u003Cth>What it does not replace\u003C/th>\n\u003C/tr>\n\u003C/thead>\n\u003Ctbody>\u003Ctr>\n\u003Ctd>ICT\u003C/td>\n\u003Ctd>Whether the assembled board passes fixture-based electrical verification\u003C/td>\n\u003Ctd>Programs with suitable access planning and a stable electrical-test path\u003C/td>\n\u003Ctd>AOI, X-ray, or functional test\u003C/td>\n\u003C/tr>\n\u003Ctr>\n\u003Ctd>Flying probe\u003C/td>\n\u003Ctd>Whether the assembled board passes fixture-free electrical verification\u003C/td>\n\u003Ctd>Prototypes, lower-volume work, or changing builds where fixture commitment is less attractive\u003C/td>\n\u003Ctd>AOI, X-ray, or functional test\u003C/td>\n\u003C/tr>\n\u003C/tbody>\u003C/table>\n\u003Cp>That difference is more important than broad marketing claims about speed or cost.\u003C/p>\n\u003Cp>The real boundary is:\u003C/p>\n\u003Cul>\n\u003Cli>ICT belongs to a \u003Cstrong>fixture-backed\u003C/strong> electrical-test model\u003C/li>\n\u003Cli>flying probe belongs to a \u003Cstrong>fixture-free\u003C/strong> electrical-test model\u003C/li>\n\u003C/ul>\n\u003Cp>Both remain electrical methods. Neither one becomes:\u003C/p>\n\u003Cul>\n\u003Cli>SPI for solder paste control\u003C/li>\n\u003Cli>AOI for visible assembly defects\u003C/li>\n\u003Cli>X-ray for hidden-joint inspection\u003C/li>\n\u003Cli>FCT for powered behavior validation\u003C/li>\n\u003C/ul>\n\u003Cp>The physical-failure warning matters most when a dense board is pushed into a fixture path without enough support. Probe force and clamp loading can flex the board locally, especially near very small MLCCs or stressed solder joints. The first pass may still look acceptable because the electrical screen only checks the board in that moment. The later problem is latent: local strain can crack a small capacitor or disturb a joint, and the open or short appears only after handling, debug, or later use. That is why \u003Ccode>ICT vs flying probe\u003C/code> is not only a coverage discussion. It is also an access-model and board-support decision.\u003C/p>\n\u003Cp>Related reading:\u003C/p>\n\u003Cul>\n\u003Cli>\u003Ca href=\"/en/pcba/ict-test\">In-Circuit Test (ICT)\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/flying-probe-testing\">Flying Probe Testing\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/testing-quality\">Testing & Quality\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/xray-inspection\">X-Ray Inspection\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/blog/xray-inspection\">X-Ray Inspection in PCBA\u003C/a>\u003C/li>\n\u003C/ul>\n\u003Ca id=\"when-ict-fits\">\u003C/a>\n\u003Ch2 id=\"when-does-ict-fit-better\" data-anchor-en=\"when-does-ict-fit-better\">When does ICT fit better?\u003C/h2>\n\u003Cp>ICT fits better when the program is ready for a \u003Cstrong>more committed, fixture-based electrical-test path\u003C/strong>.\u003C/p>\n\u003Cp>That usually means:\u003C/p>\n\u003Cul>\n\u003Cli>the board and test plan are more stable\u003C/li>\n\u003Cli>the team wants repeatable fixture-based node access\u003C/li>\n\u003Cli>electrical defect screening needs to be a formal, planned production gate\u003C/li>\n\u003Cli>the build is no longer being treated mainly as a changing launch-stage evaluation\u003C/li>\n\u003C/ul>\n\u003Cp>The key point is not that ICT is automatically the most complete electrical method.\u003C/p>\n\u003Cp>The key point is that ICT is strongest when the program can support its access model and when the test layer is expected to stay consistent through repeat production.\u003C/p>\n\u003Cp>APTPCB's related pages position ICT as part of a broader stack that can sit alongside AOI, X-ray, and functional test rather than replacing them.\u003C/p>\n\u003Ca id=\"when-flying-probe-fits\">\u003C/a>\n\u003Ch2 id=\"when-does-flying-probe-fit-better\" data-anchor-en=\"when-does-flying-probe-fit-better\">When does flying probe fit better?\u003C/h2>\n\u003Cp>Flying probe fits better when the program needs a \u003Cstrong>fixture-free electrical-test path\u003C/strong>.\u003C/p>\n\u003Cp>That often includes:\u003C/p>\n\u003Cul>\n\u003Cli>prototype or early-build programs\u003C/li>\n\u003Cli>lower-volume work\u003C/li>\n\u003Cli>designs that are still changing\u003C/li>\n\u003Cli>projects where the team wants electrical screening without early fixture commitment\u003C/li>\n\u003C/ul>\n\u003Cp>This is why flying probe should not be described as simply a weaker form of ICT.\u003C/p>\n\u003Cp>It solves a different planning problem:\u003C/p>\n\u003Cp>\u003Cstrong>How do we get assembled-board electrical verification when the design, access plan, or production posture is not yet ready for a fixture-based lane?\u003C/strong>\u003C/p>\n\u003Cp>That is a legitimate and often useful choice, especially when the main need is flexible electrical screening during design or process change.\u003C/p>\n\u003Cp>The commercial failure pattern is usually not theoretical. An NPI team pushes toward mass production, assumes the layout is "close enough," and spends several thousand to well over ten thousand dollars on a dedicated bed-of-nails ICT fixture before the board revision is truly frozen. Then pilot build or EMC work exposes a small radiated-noise problem. Hardware moves two filter capacitors near the connector, shifts one protection part, or trims a short routing segment. Inside the CAD tool, that looks like a five-minute revision. On the finished ICT fixture, it is a probe-alignment failure across the bottom side.\u003C/p>\n\u003Cp>At that point the fixture is not "mostly reusable." It is scrap, because the probe field, support geometry, and sometimes the harness mapping no longer match the board. Reworking that tooling can take another two to three weeks, and the production schedule stops while everyone waits for a new mechanical build. Flying probe is slower per board, but in this situation it only needs an updated CAD import and a revised test program. That is the real boundary: before comparing raw test speed, check whether the design and test-point map are mature enough to survive fixture commitment without turning a minor revision into tooling scrap.\u003C/p>\n\u003Ca id=\"freeze-before-selection\">\u003C/a>\n\u003Ch2 id=\"what-should-be-frozen-before-choosing-one-path\" data-anchor-en=\"what-should-be-frozen-before-choosing-one-path\">What should be frozen before choosing one path?\u003C/h2>\n\u003Cp>Before choosing ICT or flying probe as the main electrical-test lane, freeze:\u003C/p>\n\u003Col>\n\u003Cli>the board revision and assembly intent\u003C/li>\n\u003Cli>the test objective, including what defect classes electrical test is expected to own\u003C/li>\n\u003Cli>the access assumptions for fixture-based or fixture-free verification\u003C/li>\n\u003Cli>the later need for functional test, hidden-joint inspection, or release review\u003C/li>\n\u003Cli>the release boundary between electrical defect screening and end-use product proof\u003C/li>\n\u003C/ol>\n\u003Cp>If those items are still moving, the board can still be tested, but the electrical-test choice should be framed as a working posture rather than a final production rule.\u003C/p>\n\u003Ca id=\"next-steps\">\u003C/a>\n\u003Ch2 id=\"next-steps-with-aptpcb\" data-anchor-en=\"next-steps-with-aptpcb\">Next steps with APTPCB\u003C/h2>\n\u003Cp>If your high-density PCBA is still living through revision churn, if you do not know whether current test-point coverage is physically sufficient for ICT, or if you are trying to avoid burning fixture-tooling cost before the layout is truly stable, treat the test-method decision as an NPI risk review, not a purchasing choice.\u003C/p>\n\u003Cp>Send the Gerber or ODB++ package, IPC-2581 data if available, netlist, BOM, and any mechanical interference drawings through the \u003Ca href=\"/en/quote\">quote page\u003C/a> or to \u003Ca href=\"mailto:sales@aptpcb.com\">sales@aptpcb.com\u003C/a>. APTPCB's DFT and test-strategy team will return a professional \u003Cstrong>Test Access Model & Tooling Risk Audit\u003C/strong> within \u003Cstrong>24 hours\u003C/strong>.\u003C/p>\n\u003Cp>That review is built to answer the questions that usually get missed until money is already gone: whether ICT is physically supportable, where fixture access will collapse, how much real coverage flying probe can still deliver, and whether a small upcoming revision is likely to turn a custom fixture into scrap. The goal is simple: lock the most stable electrical-screening path before you spend thousands of dollars on tooling that dies with the next board spin.\u003C/p>\n\u003Cul>\n\u003Cli>\u003Ca href=\"/en/pcba/testing-quality\">Testing & Quality\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/ict-test\">In-Circuit Test (ICT)\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/flying-probe-testing\">Flying Probe Testing\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/turnkey-assembly\">Turnkey Assembly\u003C/a>\u003C/li>\n\u003Cli>\u003Ca href=\"/en/pcba/components-bom\">Components BOM\u003C/a>\u003C/li>\n\u003C/ul>\n\u003Cdiv data-component=\"BlogQuickQuoteInline\">\u003C/div>\n\n\u003Ca id=\"faq\">\u003C/a>\n\u003Ch2 id=\"faq\" data-anchor-en=\"faq\">FAQ\u003C/h2>\n\u003C!-- faq:start -->\n\n\u003Ch3 id=\"is-flying-probe-the-same-thing-as-ict\" data-anchor-en=\"is-flying-probe-the-same-thing-as-ict\">Is flying probe the same thing as ICT?\u003C/h3>\n\u003Cp>No. Both are electrical-test methods for assembled boards, but ICT is fixture-based and flying probe is fixture-free.\u003C/p>\n\u003Ch3 id=\"can-flying-probe-replace-functional-test\" data-anchor-en=\"can-flying-probe-replace-functional-test\">Can flying probe replace functional test?\u003C/h3>\n\u003Cp>No. Flying probe screens electrical faults. Functional test still owns powered behavior in the intended use context.\u003C/p>\n\u003Ch3 id=\"can-ict-replace-aoi-or-x-ray\" data-anchor-en=\"can-ict-replace-aoi-or-x-ray\">Can ICT replace AOI or X-ray?\u003C/h3>\n\u003Cp>No. ICT is an electrical method. AOI owns visible defect review, and X-ray owns hidden-joint inspection where that evidence is required.\u003C/p>\n\u003Ch3 id=\"when-is-flying-probe-usually-the-better-fit\" data-anchor-en=\"when-is-flying-probe-usually-the-better-fit\">When is flying probe usually the better fit?\u003C/h3>\n\u003Cp>It is usually the better fit when the program is still changing, lower volume, or not ready for a fixture-based electrical-test path.\u003C/p>\n\u003Ch3 id=\"when-is-ict-usually-the-better-fit\" data-anchor-en=\"when-is-ict-usually-the-better-fit\">When is ICT usually the better fit?\u003C/h3>\n\u003Cp>It is usually the better fit when the board and test plan are stable enough to support a committed fixture-based electrical-test lane.\u003C/p>\n\u003C!-- faq:end -->\n\n\u003Ca id=\"references\">\u003C/a>\n\u003Ch2 id=\"public-references\" data-anchor-en=\"public-references\">Public references\u003C/h2>\n\u003Col>\n\u003Cli>\u003Cp>\u003Ca href=\"https://www.keysight.com/us/en/products/in-circuit-test-for-manufacturing/in-circuit-test-systems.html\">Keysight In-Circuit Test Systems\u003C/a>\nPublic manufacturing-test anchor for ICT as a fixture-based in-circuit test lane.\u003C/p>\n\u003C/li>\n\u003Cli>\u003Cp>\u003Ca href=\"https://www.seica.com/en/products/flying-probe-test-systems\">SEICA Flying Probe Test Systems\u003C/a>\nPublic manufacturing-test anchor for flying probe as a fixture-free electrical-test lane.\u003C/p>\n\u003C/li>\n\u003Cli>\u003Cp>\u003Ca href=\"https://www.murata.com/support/faqs/capacitor/ceramiccapacitor/mnt/0016\">Murata Probe-Force Precaution FAQ\u003C/a>\nPublic manufacturer guidance that probe force can flex the board and crack chips or open solder joints.\u003C/p>\n\u003C/li>\n\u003Cli>\u003Cp>\u003Ca href=\"https://product.tdk.com/en/contact/faq/capacitors-0086.html\">TDK MLCC Flex Crack FAQ\u003C/a>\nPublic manufacturer guidance that board flex can create latent MLCC open or short failures.\u003C/p>\n\u003C/li>\n\u003Cli>\u003Cp>\u003Ca href=\"/en/blog/pcba-assembly-test-quality-guide\">PCBA Assembly Test and Quality Guide\u003C/a>\nCompanion page for the broader test stack around SPI, AOI, X-ray, ICT, flying probe, FCT, and release gates.\u003C/p>\n\u003C/li>\n\u003C/ol>\n\u003Ca id=\"author\">\u003C/a>\n\u003Ch2 id=\"author-and-review-information\" data-anchor-en=\"author-and-review-information\">Author and review information\u003C/h2>\n\u003Cul>\n\u003Cli>Author: APTPCB PCBA test strategy content team\u003C/li>\n\u003Cli>Technical review: electrical test planning and PCBA quality engineering team\u003C/li>\n\u003Cli>Last updated: 2026-05-13\u003C/li>\n\u003C/ul>\n\n\u003Csection class=\"related-links\" aria-label=\"Related\">\u003Ch3>Related links\u003C/h3>\u003Cul>\u003Cli>\u003Ca href=\"/en/blog/pcba-assembly-test-quality-guide\">PCBA Assembly Test and Quality Guide\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/pcba/ict-test\">In-Circuit Test (ICT)\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/pcba/flying-probe-testing\">Flying Probe Testing\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/pcba/testing-quality\">Testing & Quality\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/pcba/xray-inspection\">X-Ray Inspection\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/blog/xray-inspection\">X-Ray Inspection in PCBA\u003C/a>\u003C/li>\u003Cli>\u003Ca href=\"/en/quote\">quote page\u003C/a>\u003C/li>\u003C/ul>\u003C/section>",[14,15,16,17,18],"ict vs flying probe","ict test","flying probe testing","pcba electrical test","pcba testing strategy","ict-vs-flying-probe",{"blog":21,"breadcrumb":30,"faq":44},{"@context":22,"@type":23,"headline":4,"description":5,"image":8,"url":24,"datePublished":6,"dateModified":6,"timeRequired":11,"keywords":25,"articleSection":7,"author":26,"publisher":29},"https://schema.org","BlogPosting","https://aptpcb.com/en/blog/ict-vs-flying-probe","ict vs flying probe, ict test, flying probe testing, pcba electrical test, pcba testing strategy",{"@type":27,"name":28},"Organization","APTPCB",{"@type":27,"name":28},{"@context":22,"@type":31,"itemListElement":32},"BreadcrumbList",[33,38,42],{"@type":34,"position":35,"name":36,"item":37},"ListItem",1,"Home","https://aptpcb.com/",{"@type":34,"position":39,"name":40,"item":41},2,"Blog","https://aptpcb.com/en/blog",{"@type":34,"position":43,"name":19,"item":24},3,{"@context":22,"@type":45,"mainEntity":46},"FAQPage",[47,53,57,61,65],{"@type":48,"name":49,"acceptedAnswer":50},"Question","Is flying probe the same thing as ICT?",{"@type":51,"text":52},"Answer","No. Both are electrical-test methods for assembled boards, but ICT is fixture-based and flying probe is fixture-free.",{"@type":48,"name":54,"acceptedAnswer":55},"Can flying probe replace functional test?",{"@type":51,"text":56},"No. Flying probe screens electrical faults. Functional test still owns powered behavior in the intended use context.",{"@type":48,"name":58,"acceptedAnswer":59},"Can ICT replace AOI or X-ray?",{"@type":51,"text":60},"No. ICT is an electrical method. AOI owns visible defect review, and X-ray owns hidden-joint inspection where that evidence is required.",{"@type":48,"name":62,"acceptedAnswer":63},"When is flying probe usually the better fit?",{"@type":51,"text":64},"It is usually the better fit when the program is still changing, lower volume, or not ready for a fixture-based electrical-test path.",{"@type":48,"name":66,"acceptedAnswer":67},"When is ICT usually the better fit?",{"@type":51,"text":68},"It is usually the better fit when the board and test plan are stable enough to support a committed fixture-based electrical-test lane.",{"pcbManufacturingColumns":70,"capabilityColumns":195,"resourceColumns":226,"pcbaColumns":266},[71,119,148,177],{"heading":72,"links":73},"PCB Product Families",[74,77,80,83,86,89,92,95,98,101,104,107,110,113,116],{"label":75,"path":76},"FR-4 PCB","/pcb/fr4-pcb",{"label":78,"path":79},"High-Speed PCB","/pcb/high-speed-pcb",{"label":81,"path":82},"Multilayer 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