{"id":2368,"date":"2026-07-18T00:10:00","date_gmt":"2026-07-18T00:10:00","guid":{"rendered":"https:\/\/swesd.com\/blog\/esd-circulation-box-wip-logistics\/"},"modified":"2026-07-18T00:10:00","modified_gmt":"2026-07-18T00:10:00","slug":"esd-circulation-box-wip-logistics","status":"publish","type":"post","link":"https:\/\/swesd.com\/ar\/blog\/esd-circulation-box-wip-logistics\/","title":{"rendered":"How should an ESD circulation box move WIP between SMT and assembly?"},"content":{"rendered":"<p style=\"margin:0 0 16px;line-height:1.7\"><strong>An ESD circulation box can make the handoff from SMT to assembly visible when every box has a defined WIP state, entry rule, receiving owner, and exit destination.<\/strong> It is a physical part of the route, not a substitute for the manufacturing system that controls release status and traceability.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Start with the <a href=\"https:\/\/swesd.com\/ar\/esd-box\/\">ESD Box category<\/a> to review the product cluster. This guide focuses on route control between process steps. For material and EPA context, use the related <a href=\"https:\/\/swesd.com\/ar\/blog\/conductive-pp-box\/\">material and EPA staging guidance<\/a> after the process team has defined the handoff.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ESD circulation box for controlled WIP handoff planning\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/esd-box-esd-box-for-PCB-esd-box-with-lid-7.webp\" \/><\/figure>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 style=\"margin:42px 0 14px\">Contents<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"#part-1-define-the-circulation-box-job\">Part 1. Define the circulation-box job<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-2-map-wip-states-between-smt-and-assembly\">Part 2. Map WIP states between SMT and assembly<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-3-set-entry-handoff-and-exit-rules\">Part 3. Set entry, handoff, and exit rules<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-4-separate-exceptions-returns-and-rework\">Part 4. Separate exceptions, returns, and rework<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-5-confirm-box-configuration-and-esd-evidence\">Part 5. Confirm box configuration and ESD evidence<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-6-build-the-rfq-and-route-trial-plan\">Part 6. Build the RFQ and route-trial plan<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 style=\"margin:42px 0 14px\" id=\"part-1-define-the-circulation-box-job\">Part 1. Define the circulation-box job<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">A circulation box has a job in a route: it carries a defined workpiece state from one named point to another. That is different from an open storage box that can receive any item from any process. Before choosing a product, identify the source process, the expected next process, the person or system that accepts the handoff, and the action if acceptance cannot happen.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">The box should represent a controlled handoff, not a hidden queue. A growing collection of boxes at an assembly entrance may show an unresolved release, staffing, material, or equipment issue. Give the route an escalation rule so the team investigates the cause instead of simply adding more containers.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Route question<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Rule to define<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Why it matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Source<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Which SMT operation may release the workpiece<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Prevents an undefined item from entering the route<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Permitted state<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What status may travel in the box<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Keeps released, held, and rework WIP distinct<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Destination<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Which assembly point receives it<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Makes the next owner visible<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Handoff owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Who confirms receipt or exception<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Avoids unowned WIP<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Exit<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Where an accepted box goes next<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stops a completed handoff becoming storage<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Escalation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What happens when the handoff cannot continue<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Exposes a route problem early<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\" id=\"part-2-map-wip-states-between-smt-and-assembly\">Part 2. Map WIP states between SMT and assembly<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">The route should describe the workpiece state, not only the physical location. For example, a board awaiting assembly, an inspected board awaiting release, and a board directed to rework may all need different entry conditions. The manufacturing team decides those states and their evidence; the circulation box carries the item under that rule.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Map the route at each transfer. Record the source, destination, allowed state, route identifier, and owner. If the same physical box can be used for more than one state, the procedure still needs a clear method to prevent a previous label or status from being mistaken for the next one.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Handoff<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Example permitted state<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Owner to define<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Do not assume<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">SMT output to inspection<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Work awaiting the site&#8217;s inspection step<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Inspection receiving owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That all SMT output is released<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Inspection to assembly<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Work released under the site&#8217;s instruction<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Assembly receiving owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That arrival equals acceptance<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Assembly to test<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Work awaiting the defined test step<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Test receiving owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That a box label proves test status<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rework return<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Work with a documented rework disposition<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rework owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That it can enter the normal forward lane<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Material return<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Empty or reusable route equipment<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Logistics owner<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That it may carry product WIP on the return trip<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">For compartment design where components must remain separated, use the <a href=\"https:\/\/swesd.com\/ar\/blog\/esd-box-with-dividers-rfq-checklist\/\">component-segregation RFQ checklist<\/a>. It addresses how a cell layout supports separation; the route rule still decides what may enter the box.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-3-set-entry-handoff-and-exit-rules\">Part 3. Set entry, handoff, and exit rules<\/h2>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ESD box for WIP route identification and handoff rules\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/esd-box-esd-box-for-PCB-esd-box-with-lid.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">At entry, the operator needs a simple decision: may this WIP state enter this route now? Define the identifier, allowed item type, source confirmation, and destination before the box leaves SMT. The rule should point to the buyer&#8217;s own traveler, label, work order, or electronic record rather than claiming that the box itself provides traceability.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Receiving is a separate control point. Assembly should be able to accept the intended state, redirect an exception, or decline a box that lacks the required identification. An exit rule then closes the handoff by sending the accepted workpiece to the next defined station or to a separate exception lane.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Control point<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Minimum question<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Example action<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Entry<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Is this WIP state permitted on this route?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Load only after the source rule is met<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Departure<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Is the destination and route identification present?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Send to the named receiving point<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Receipt<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Can the receiving owner accept this state?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Accept, redirect, or place in the exception lane<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Exit<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What is the next controlled destination?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Move to the next process or return equipment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">Do not rely on an unreadable label, a verbal handoff, or a box color as the only route control. Those cues can support an approved work instruction, but they are not a substitute for the record and ownership defined by the manufacturing system.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-4-separate-exceptions-returns-and-rework\">Part 4. Separate exceptions, returns, and rework<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Normal WIP, held work, and rework need different routes or unmistakable state controls. If a receiving team cannot accept a box, the item should move to the designated exception point with an owner and disposition path. It should not wait in the same lane as released WIP.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">The return path needs the same care. A reusable box returning to SMT or logistics should be identified as equipment return, inspected according to the site&#8217;s procedure, and kept separate from product-carrying WIP until it is cleared for reuse. This prevents an empty-container route from becoming an uncontrolled shortcut.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Situation<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Controlled response<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Avoid<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Incorrect WIP state arrives<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Move it to the named exception process<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Placing it behind accepted assembly WIP<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Receiving owner is unavailable<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Apply the route&#8217;s escalation or holding rule<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Leaving the box at an unowned doorway<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rework is required<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Use the documented rework state and destination<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Sending it back through the normal forward route<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Box returns empty<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Follow the buyer&#8217;s return and reuse check<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Treating a return box as automatically ready<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Identifier is missing or unclear<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stop the handoff and resolve the record<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Guessing from box appearance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\" id=\"part-5-confirm-box-configuration-and-esd-evidence\">Part 5. Confirm box configuration and ESD evidence<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Choose the box after the route is known. The workpiece envelope, required separation, access side, identification position, and intended interfaces with a cart, rack, or workstation determine what must be checked. A product photo cannot confirm those details for a specific line.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Sanwei&#8217;s <a href=\"https:\/\/swesd.com\/ar\/solutions\/esd-box-esd-tray\/\">ESD Box &amp; ESD Tray solution<\/a> lists material options, a customizable resistance range, custom dimensions, compartments, dividers, and labels. The <a href=\"https:\/\/swesd.com\/ar\/%d9%85%d9%86%d8%aa%d8%ac\/esd-box-product\/\">Sanwei ESD Box product family<\/a> lists covers, partitions, labels, and slots on selected models. Confirm the selected configuration and requested evidence in the quotation rather than extending a family-page statement to every route.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Use the buyer&#8217;s ESD-control program to define the required test method, conditions, and acceptance evidence. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/62391\" rel=\"nofollow noopener\" target=\"_blank\">IEC 61340-5-1<\/a> \u0648 <a href=\"https:\/\/www.esdassociation.org\/standards\/\" rel=\"nofollow noopener\" target=\"_blank\">ESD Association standards information<\/a> provide program context; neither source approves a particular box, route, or manufacturing state.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">For any covered configuration, the <a href=\"https:\/\/swesd.com\/ar\/blog\/esd-box-with-lid-and-slots-stacking-guide\/\">stacking and label-orientation guide<\/a> helps review access and label visibility. Confirm those features for the exact selected model and the actual route.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-6-build-the-rfq-and-route-trial-plan\">Part 6. Build the RFQ and route-trial plan<\/h2>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ESD tote box for reviewing an SMT-to-assembly circulation route\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/High-Capacity-ESD-Tote-Box.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Put the process requirement and the container requirement in the same RFQ attachment. This lets the supplier review the requested box configuration while the buyer retains ownership of WIP status, route rules, and acceptance criteria.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">RFQ or route-trial input<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Buyer should define<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Process map<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Source, handoff, destination, and return points<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Permitted WIP states<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Which status may use each route<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Handoff ownership<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Who sends, receives, redirects, and escalates<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Workpiece and configuration<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Envelope, contact constraints, compartment need, access side, and accessories<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Identification method<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">The buyer&#8217;s label, traveler, work order, or electronic-record connection<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Exception logic<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Hold, rework, missing-identifier, and receiving-failure actions<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">ESD requirement<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Material requirement, test method, conditions, locations, and required evidence<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Route trial<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Defined sample route, observations, and acceptance criteria<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Quantity planning<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Required quantity bands after the route and configuration are confirmed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 style=\"margin:28px 0 12px\">Product recommendation<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Use the <a href=\"https:\/\/swesd.com\/ar\/%d9%85%d9%86%d8%aa%d8%ac\/esd-box-product\/\">Sanwei ESD Box product family<\/a> as a starting point after the buyer has documented the route, workpiece envelope, required accessories, material requirement, ESD evidence, and route-trial criteria. For a published footprint and depth family, review the <a href=\"https:\/\/swesd.com\/ar\/%d9%85%d9%86%d8%aa%d8%ac\/esd-box-600l400whmm\/\">600 \u00d7 400 mm ESD Box<\/a> only after confirming that the selected configuration fits the intended use.<\/p>\n<h3 style=\"margin:28px 0 12px\">Fit Boundary<\/h3>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Buyer situation<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Suitable path<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Avoid<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Named SMT-to-assembly handoff<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Define entry, receipt, exit, and escalation rules<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Using open storage as a default handoff point<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Multiple WIP states<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Separate the states through route rules and identification<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Relying on box color alone<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rework or hold condition<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Use a dedicated disposition route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Returning it through the normal forward lane<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">New box configuration<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Confirm the quoted model and run a route trial<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Treating an image as proof of operational fit<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Need for material or ESD evidence<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">State the requirement and acceptance method<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Inferring a result from a generic product claim<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">Send the process map, WIP-state rules, route identification method, workpiece details, configuration needs, ESD requirement, and trial criteria through <a href=\"https:\/\/swesd.com\/ar\/contact-us\/\">Contact Sanwei<\/a> for a configuration discussion.<\/p>\n<h2 style=\"margin:42px 0 14px\">\u0623\u0633\u0626\u0644\u0629 \u0645\u062a\u0643\u0631\u0631\u0629<\/h2>\n<h3 style=\"margin:28px 0 12px\">What is an ESD circulation box used for?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It can serve as a controlled physical handoff container for a defined WIP state between named process points. The process team must still define the state, owner, identifier, and exit rule.<\/p>\n<h3 style=\"margin:28px 0 12px\">How should WIP move from SMT to assembly?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Map the source, permitted state, route identifier, receiving owner, and exit destination. If the receiver cannot accept the item, use the documented exception route instead of an informal holding area.<\/p>\n<h3 style=\"margin:28px 0 12px\">Does an ESD box provide traceability by itself?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">No. The box can carry or display the buyer&#8217;s identification method, but traceability remains a function of the manufacturing system, work instruction, and associated record.<\/p>\n<h3 style=\"margin:28px 0 12px\">How can mixed WIP be prevented at a handoff?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Define permitted states for each route and separate normal WIP, held work, rework, and equipment return. Stop and resolve any box with a missing or unclear identifier.<\/p>\n<h3 style=\"margin:28px 0 12px\">Can one circulation box serve every process state?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Only if the buyer&#8217;s procedure clearly controls identification, cleaning or reuse, and state changes. A single physical box does not remove the need to prevent status mix-ups.<\/p>\n<h3 style=\"margin:28px 0 12px\">What should be checked before a box returns to the route?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Follow the buyer&#8217;s return and reuse procedure. Confirm the box is assigned to the correct return path and is suitable for the next intended use before it carries product WIP again.<\/p>\n<h3 style=\"margin:28px 0 12px\">What ESD evidence should be requested?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Request the material requirement, electrical target, test method, conditions, test locations, and evidence format needed by the buyer&#8217;s ESD-control program for the selected configuration.<\/p>\n<h3 style=\"margin:28px 0 12px\">What belongs in a circulation-box RFQ?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Include the route map, permitted WIP states, ownership, workpiece envelope, configuration needs, identification method, exception logic, ESD requirement, route-trial criteria, and quantity bands.<\/p>\n<h2 style=\"margin:42px 0 14px\">\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/62391\" rel=\"nofollow noopener\" target=\"_blank\">IEC 61340-5-1 \u2014 Electrostatics: protection of electronic devices from electrostatic phenomena<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.esdassociation.org\/standards\/\" rel=\"nofollow noopener\" target=\"_blank\">ESD Association \u2014 standards information and program resources<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>An ESD circulation box can make the handoff from SMT to assembly visible when every box has a defined WIP state, entry rule, receiving owner, and exit destination. It is a physical part of the route, not a substitute for the manufacturing system that controls release status and traceability. Start with the ESD Box category [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2368","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/posts\/2368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/comments?post=2368"}],"version-history":[{"count":0,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/posts\/2368\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/media\/1049"}],"wp:attachment":[{"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/media?parent=2368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/categories?post=2368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swesd.com\/ar\/wp-json\/wp\/v2\/tags?post=2368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}