{"id":2387,"date":"2026-07-21T09:00:00","date_gmt":"2026-07-21T09:00:00","guid":{"rendered":"https:\/\/swesd.com\/?p=2387"},"modified":"2026-07-21T09:00:00","modified_gmt":"2026-07-21T09:00:00","slug":"polypropylene-esd-tray-vs-thermoformed","status":"publish","type":"post","link":"https:\/\/swesd.com\/ru\/blog\/polypropylene-esd-tray-vs-thermoformed\/","title":{"rendered":"Polypropylene or thermoformed ESD tray: which fits the job?"},"content":{"rendered":"<p style=\"margin:0 0 16px;line-height:1.7\"><strong>Pick the tray construction from the part, route, and reuse expectation \u2014 not from the material word.<\/strong> A rigid polypropylene-family ESD tray and a thermoformed cavity tray solve different handling jobs, and the published model evidence, ESD data, and a sample-use review decide which one belongs in the quotation.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0417\u0435\u043c\u043b\u044f <a href=\"https:\/\/swesd.com\/ru\/esd-tray\/\">ESD Tray category<\/a> lists the published tray families on one page. For the formed-cavity side, the first-party <a href=\"https:\/\/swesd.com\/ru\/blog\/custom-thermoformed-esd-trays-for-ic-packaging\/\">thermoformed tray customization guide<\/a> is useful background reading before comparing constructions.<\/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=\"Polypropylene ESD tray for electronics staging and turnover\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/Antistatic-Tray-ESD-Type-Avaibleable-Plastic-Shelf-Tray-for-Electronic-Parts-Storage-Workshop-Turnover.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-job-each-tray-family-does\">Part 1. Define the job each tray family does<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-2-record-the-part-route-and-reuse-inputs\">Part 2. Record the part, route, and reuse inputs<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-3-review-the-published-polypropylene-family-evidence\">Part 3. Review the published polypropylene-family evidence<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-4-weigh-the-published-thermoformed-side-evidence\">Part 4. Weigh the published thermoformed-side evidence<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-5-compare-the-constructions-on-buyer-factors\">Part 5. Compare the constructions on buyer factors<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-6-confirm-esd-and-material-evidence-boundaries\">Part 6. Confirm ESD and material evidence boundaries<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-7-build-the-rfq-and-sample-use-review\">Part 7. Build the RFQ and sample-use review<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 style=\"margin:42px 0 14px\" id=\"part-1-define-the-job-each-tray-family-does\">Part 1. Define the job each tray family does<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">A rigid tray in the polypropylene family typically serves open or partitioned staging: parts wait at a bench, move between stations, sit in a rack, or cycle through a turnover loop. Stiff walls, a flat base, and a repeatable footprint matter more than a part-shaped pocket in that role.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Thermoformed trays answer a different question. When each unit must sit in its own shaped cavity \u2014 an IC strip, a module with connectors, an odd-shaped subassembly \u2014 a formed sheet can nest the part so orientation and spacing stay controlled. The <a href=\"https:\/\/swesd.com\/ru\/blog\/esd-trays-for-pcb\/\">PCB tray overview<\/a> shows how tray roles split across board handling before any material decision is made.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Neither family is an upgrade of the other. Sending a formed cavity tray on a heavy turnover loop, or asking a flat rigid tray to hold an irregular part in fixed orientation, replaces one problem with another.<\/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\">Operating question<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Rigid tray family answer<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Formed tray answer<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What holds the part?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Open floor, partitions, or grids<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">A cavity shaped to the part<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What repeats?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Footprint, stacking, and turnover<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nesting, orientation, and count per sheet<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What defines success?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Route survival and staging discipline<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Cavity fit confirmed against a drawing<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">What breaks the choice?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Parts that need fixed orientation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Routes that exceed the formed sheet&#8217;s duty<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\" id=\"part-2-record-the-part-route-and-reuse-inputs\">Part 2. Record the part, route, and reuse inputs<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Start the comparison with the part record: maximum length, width, height, protrusions, connectors, and any contact-sensitive faces. Add the required orientation and how an operator or machine loads and removes the unit. A marked-up drawing beats a part name.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Route and reuse inputs carry equal weight. Note where the tray travels (line-side, between buildings, through a wash bay, into storage), how many return trips are expected, and what happens to a tray that comes back damaged or dirty. Buyers who skip the reuse line often discover it later as an unplanned cost.<\/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\">Worksheet field<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">What to record<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Why it moves the decision<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part envelope<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Dimensions, protrusions, restricted faces<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Determines cavity need versus open staging<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Orientation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stored face, entry direction, removal motion<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Formed nesting fixes orientation; open trays do not<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stations, transport legs, wash or cleaning steps<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Duty on the tray body differs by construction<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Reuse expectation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Return trips, inspection, retirement rule<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Changes the economics of each construction<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Identification<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label, lot, or work-order fields<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Both families need a documented label rule<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\" id=\"part-3-review-the-published-polypropylene-family-evidence\">Part 3. Review the published polypropylene-family evidence<\/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=\"Custom polypropylene ESD trays in stacked electronics handling colors\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/Custom-ESD-Trays-Anti-Static-Tray-Antistatic-BlackBlueRed-PP-ESD-Plastic-Tray-Pallet-Box-Open.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">The published <a href=\"https:\/\/swesd.com\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82\/esd-tray\/\">Sanwei ESD Tray product page<\/a> lists named model rows from 3W-9805108 to 3W-9805134. Each row records external dimensions, inner size, wall thickness, and weight \u2014 for example, 3W-9805108 shows 225 \u00d7 165 \u00d7 37 mm external, 215 \u00d7 155 \u00d7 32 mm inner, a 2 mm wall, and 0.18 kg, while larger rows reach 592 \u00d7 545 \u00d7 37 mm with walls up to 4.5 mm.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Listed rows also record a static index of 10e4-10e8 \u03a9 and optional accessories such as an anti-static label, an anti-static partition, and silk screen printing. On the related <a href=\"https:\/\/swesd.com\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82\/esd-tray-with-grids\/\">Sanwei ESD Tray With Grids<\/a> page, the family description cites conductive PP materials or surface treatment technology.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Read those rows as row-level facts. A dimension or accessory published for one model does not transfer to another, and the page does not publish a molding process, resin datasheet, or load rating for any row.<\/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\">Published observation<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Selection use<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Do not infer<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Named rows 3W-9805108 to 3W-9805134<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Shortlist rows near the part envelope and route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That unlisted sizes exist or match<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Wall thickness 2 to 4.5 mm by row<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Compare stiffness needs against the route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">A load rating or drop performance<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Static index 10e4-10e8 \u03a9 on listed rows<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Set the electrical starting point for the RFQ<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Acceptance under the buyer&#8217;s own test method<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label, partition, and silk screen options<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Plan identification and segregation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">That every option applies to every row<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\" id=\"part-4-weigh-the-published-thermoformed-side-evidence\">Part 4. Weigh the published thermoformed-side evidence<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Sanwei&#8217;s first-party blog covers the formed-cavity side. The <a href=\"https:\/\/swesd.com\/ru\/blog\/custom-thermoformed-esd-trays-for-ic-packaging\/\">thermoformed tray customization guide<\/a> explains how custom formed trays support IC packaging, and the <a href=\"https:\/\/swesd.com\/ru\/blog\/custom-ps-esd-tray\/\">PS thermoform tray notes<\/a> discuss polystyrene as a forming material for electronics trays.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Treat those articles as guidance rather than a model table. A formed tray is defined by its drawing: cavity layout, part clearance, sheet behavior, and the count per sheet all come from the buyer&#8217;s part geometry and the agreed design, so the evidence that matters is the reviewed drawing and the sample, not a catalogue row.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">That difference shapes procurement. The rigid family starts from published rows and narrows; the formed side starts from a part drawing and builds. Budget review time accordingly.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-5-compare-the-constructions-on-buyer-factors\">Part 5. Compare the constructions on buyer factors<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">With the worksheet and both evidence sets in hand, the comparison becomes a table of trade-offs instead of a material debate. Score each factor against the documented part and route.<\/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\">Buyer factor<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Rigid polypropylene-family tray<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Thermoformed cavity tray<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part control<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Open floor or partition cells; orientation by procedure<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Cavity nests the part; orientation by design<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Evidence available<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Published model rows with dimensions, wall, weight, static index<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Drawing-driven; confirmed at design and sample review<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Turnover duty<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Selected by row and confirmed on the route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Confirmed per design; duty is part of the drawing review<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Change tolerance<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">New part often fits an existing row or partition plan<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part revision can require a cavity revision<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Identification<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label and silk screen options published on rows<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label plan defined in the formed-tray design<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Typical fit<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Staging, turnover, storage, mixed parts<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part-specific nesting, shipment sets, machine presentation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">Mixed programs are common: a formed insert can ride inside a rigid tray, or the two families can serve different process stages. Where both appear, define which tray owns each handoff so the reuse rule stays enforceable.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-6-confirm-esd-and-material-evidence-boundaries\">Part 6. Confirm ESD and material evidence boundaries<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Electrical wording needs the same discipline for both constructions. Ask for the static index or resistance evidence for the quoted model or formed design, the test method and conditions, the measurement locations, and the evidence format the buyer&#8217;s program requires. <a href=\"https:\/\/www.esda.org\/standards\/\" rel=\"nofollow noopener\" target=\"_blank\">ESD Association standards information<\/a> frames the program context; it does not approve a specific tray.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Material wording deserves a direct question. Confirm in writing what material family the quoted item uses, how the anti-static property is achieved, and whether cleaning agents on the route affect it. A category word on a page \u2014 polypropylene, PS, or PC \u2014 is a starting point for that question, not the answer.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Keep unpublished attributes out of the decision. Temperature behavior beyond published notes, load limits, chemical exposure, price, MOQ, and lead time are quotation items for the specific request, whichever construction wins.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-7-build-the-rfq-and-sample-use-review\">Part 7. Build the RFQ and sample-use review<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">A reviewable RFQ names the job, not just a material. Attach the worksheet, identify the candidate published row or the formed-cavity concept, and list the open questions from Part 6 so the supplier can answer them against a defined request.<\/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 sample-use input<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Buyer should provide<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part record<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Drawing or marked photos with envelope, protrusions, restricted faces<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Route and reuse<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stations, transport legs, cleaning steps, expected return trips<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Construction intent<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Candidate published row, or cavity concept with orientation and count<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Identification<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label fields, lot rule, and placement expectation<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Electrical evidence<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Required static index or resistance target, method, and format<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Material confirmation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Written material family and cleaning compatibility for the quote<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Sample acceptance<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Load, seat, remove, identify, and route checks with pass 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\">Quantity bands after the model or design is confirmed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 style=\"margin:28px 0 12px\">Product recommendation<\/h3>\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=\"Sanwei ESD tray model row for quotation review\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/Static-Shielding-Tray-PCB-Tray-Supplier.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Use the <a href=\"https:\/\/swesd.com\/ru\/%d0%bf%d1%80%d0%be%d0%b4%d1%83%d0%ba%d1%82\/esd-tray\/\">Sanwei ESD Tray product page<\/a> as the starting point when the job is rigid staging, turnover, or storage and a published row sits near the documented part envelope. Send the worksheet through <a href=\"https:\/\/swesd.com\/ru\/contact-us\/\">Contact Sanwei<\/a> to confirm the selected row, accessories, material wording, and evidence for the quotation \u2014 or to route a formed-cavity request into a design review.<\/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\">Defined part, heavy turnover loop<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Shortlist published rigid rows against the route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Assuming any formed sheet survives the same duty<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Part needs fixed orientation and nesting<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Start a formed-cavity design review from the drawing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Forcing an open tray to do a cavity&#8217;s job<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Material required by a customer spec<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Confirm material wording in writing for the quoted item<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Treating a category word as a datasheet<\/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\">Request row- or design-level evidence under the buyer&#8217;s method<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Reading a static index as universal acceptance<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Unknown reuse economics<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Run a sample-use review across the real route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Deciding on price per tray alone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/h2>\n<h3 style=\"margin:28px 0 12px\">What is a polypropylene ESD tray used for?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It generally serves open or partitioned staging, turnover, and storage of electronic parts where a stiff, repeatable tray footprint matters. The specific published model row and the buyer&#8217;s route define the actual use.<\/p>\n<h3 style=\"margin:28px 0 12px\">Are thermoformed ESD trays reusable?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Reuse depends on the sheet design, the route, and the buyer&#8217;s acceptance rule. State the expected return trips in the RFQ and confirm the behavior on a sample rather than assuming either answer.<\/p>\n<h3 style=\"margin:28px 0 12px\">Which tray type is better for PCB handling?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Neither wins by default. Boards moving through staging and turnover usually point to rigid rows; boards or modules that need fixed nesting point to a formed design. The worksheet decides.<\/p>\n<h3 style=\"margin:28px 0 12px\">How do I confirm what material an ESD tray uses?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ask for the material family and anti-static construction in writing for the quoted model or design, and check cleaning-agent compatibility for the documented route.<\/p>\n<h3 style=\"margin:28px 0 12px\">Does Sanwei publish tray dimensions and static index values?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Yes. The ESD Tray product page lists named rows with external and inner dimensions, wall thickness, weight, and a 10e4-10e8 \u03a9 static index, plus optional accessories on listed rows.<\/p>\n<h3 style=\"margin:28px 0 12px\">What ESD evidence should be requested for either tray?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Request the electrical target, test method, conditions, measurement locations, and evidence format required by the buyer&#8217;s ESD-control program for the specific quoted item.<\/p>\n<h3 style=\"margin:28px 0 12px\">Can one program use both tray types?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Yes, and many do \u2014 for example, formed inserts inside rigid trays or different constructions at different stages. Define which tray owns each handoff and label rule.<\/p>\n<h3 style=\"margin:28px 0 12px\">What should be checked on a tray sample?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Loading, seating, removal, orientation, identification, route survival, and cleaning behavior against the buyer&#8217;s documented acceptance criteria.<\/p>\n<h2 style=\"margin:42px 0 14px\">\u0421\u0441\u044b\u043b\u043a\u0438<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.esda.org\/standards\/\" rel=\"nofollow noopener\" target=\"_blank\">ESD Association \u2014 standards information<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.jedec.org\/\" rel=\"nofollow noopener\" target=\"_blank\">JEDEC \u2014 global standards for the microelectronics industry<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Pick the tray construction from the part, route, and reuse expectation \u2014 not from the material word. A rigid polypropylene-family ESD tray and a thermoformed cavity tray solve different handling jobs, and the published model evidence, ESD data, and a sample-use review decide which one belongs in the quotation. The ESD Tray category lists the [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1193,"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-2387","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/posts\/2387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/comments?post=2387"}],"version-history":[{"count":1,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/posts\/2387\/revisions"}],"predecessor-version":[{"id":2397,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/posts\/2387\/revisions\/2397"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/media\/1193"}],"wp:attachment":[{"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/media?parent=2387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/categories?post=2387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swesd.com\/ru\/wp-json\/wp\/v2\/tags?post=2387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}