{"id":2472,"date":"2026-08-02T15:00:00","date_gmt":"2026-08-02T15:00:00","guid":{"rendered":"https:\/\/swesd.com\/blog\/esd-shielding-bag-selection-guide\/"},"modified":"2026-08-24T08:08:37","modified_gmt":"2026-08-24T08:08:37","slug":"esd-shielding-bag-selection-guide","status":"publish","type":"post","link":"https:\/\/swesd.com\/ja\/blog\/esd-shielding-bag-selection-guide\/","title":{"rendered":"How Buyers Should Select an ESD Shielding Bag"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>An ESD shielding bag is a barrier pack that limits electrostatic fields reaching sensitive components during storage and transport; buyers should map barrier class, size, labeling, and any moisture pairing before comparing quotes.<\/strong> Use it to separate shielding, dissipative, and moisture roles in one RFQ. It is a checklist for electronics buyers &#8211; not sizing or approval for esd-shielding-bag-selection-guide.<\/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=\"Sanwei ESD shielding bag for electronic component storage for esd-shielding-bag-selection-guide\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/04\/ESD-Shielding-Bag-3.webp\" \/><\/figure>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 id=\"contents\" style=\"margin:42px 0 14px;scroll-margin-top:96px\">\u76ee\u6b21<\/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-what-problem-does-an-esd-shielding-bag-solve\">Part 1. What Problem Does an ESD Shielding Bag Solve?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-2-how-should-barrier-class-and-layer-construction-appear\">Part 2. How Should Barrier Class and Layer Construction Appear?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-3-which-size-seal-and-label-fields-belong-in-the-rfq\">Part 3. Which Size, Seal, and Label Fields Belong in the RFQ?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-4-when-should-moisture-and-desiccant-pairing-be-named\">Part 4. When Should Moisture and Desiccant Pairing Be Named?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-5-how-do-trays-and-outer-boxes-complete-the-pack\">Part 5. How Do Trays and Outer Boxes Complete the Pack?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-6-which-sanwei-routes-fit-shielding-bag-quotes\">Part 6. Which Sanwei Routes Fit Shielding-Bag Quotes?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-7-what-are-the-fit-boundaries\">Part 7. What Are the Fit Boundaries?<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-1-what-problem-does-an-esd-shielding-bag-solve\">Part 1. What Problem Does an ESD Shielding Bag Solve?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Shielding bags reduce field coupling onto packaged parts during handling and transit. State whether the bag is for EPA moves, warehouse storage, or outbound shipment.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Readers searching for <strong>ESD shielding bag<\/strong> usually need a project checklist, not a catalog slogan.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-2-how-should-barrier-class-and-layer-construction-appear\">Part 2. How Should Barrier Class and Layer Construction Appear?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ask for construction notes that distinguish shielding films from pink dissipative films, with method and sample condition.<\/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\">Selection field<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Buyer question<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Evidence<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Barrier class<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Shielding or only dissipative?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Construction note + method<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Size \/ seal<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Will seals stress in transit?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Inner dim + seal style<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Label \/ lot ID<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Can operators read without opening?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Print window sample<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Moisture pairing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Is dry-pack required?<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">MSL note from device owner<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-3-which-size-seal-and-label-fields-belong-in-the-rfq\">Part 3. Which Size, Seal, and Label Fields Belong in the RFQ?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">List inner dimensions, seal style, print windows, and lot ID placement so seals are not stressed in transit.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>Important:<\/strong> Do not equate pink dissipative film with a shielding bag. Name barrier class and any moisture pairing in the RFQ before comparing prices. (Source: IEC 61340 packaging guidance \/ device MSL ownership.)<\/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=\"Sanwei ESD tray for PCB and component staging - review esd-shielding-bag-selection-guide\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/ESD-Antistatic-Tray-Electronics-Component-Storage-ESD-PCB-Tray-for-PCB-Colored-ESD-Tray.webp\" \/><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-4-when-should-moisture-and-desiccant-pairing-be-named\">Part 4. When Should Moisture and Desiccant Pairing Be Named?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">State whether the shielding bag must work with moisture barrier bags, desiccants, or humidity cards.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-5-how-do-trays-and-outer-boxes-complete-the-pack\">Part 5. How Do Trays and Outer Boxes Complete the Pack?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Define whether trays hold kits after opening and which outer box carries bagged lots between buildings.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-6-which-sanwei-routes-fit-shielding-bag-quotes\">Part 6. Which Sanwei Routes Fit Shielding-Bag Quotes?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Discuss shielding bags with tray and corrugated outer routes when barrier class and size notes are attached.<\/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\">Project signal<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Sanwei route<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Send with quote<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Metalized shielding packs<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">ESD Shielding Bag<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Size list, barrier class, lot label rules<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Line-side kit after opening<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">ESD\u30c8\u30ec\u30a4<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Kit layout and board sizes<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Outer shipper for bagged lots<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">ESD Corrugated Box<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Stack height and handle needs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/swesd.com\/ja\/product\/esd-shielding-bag\/\">ESD Shielding Bag<\/a> &#8211; metalized shielding pack route for storage and transport.<\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/swesd.com\/ja\/product\/esd-tray\/\">ESD\u30c8\u30ec\u30a4<\/a> &#8211; inner staging tray when kits leave the bag at the line.<\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/swesd.com\/ja\/product\/esd-corrugated-box\/\">ESD Corrugated Box<\/a> &#8211; outer shipper discussion for bagged lots.<\/li>\n<\/ul>\n<p style=\"margin:0 0 16px;line-height:1.7\">Related articles:<br \/>\n&#8211; <a href=\"https:\/\/swesd.com\/ja\/blog\/esd-safe-material-selection-pp-ps-conductive\/\">PP, PS, and conductive polymer selection<\/a><br \/>\n&#8211; <a href=\"https:\/\/swesd.com\/ja\/blog\/ansi-esd-s20-20-iec-61340-buyer-verification\/\">ANSI\/ESD S20.20 and IEC 61340 buyer verification<\/a><br \/>\n&#8211; <a href=\"https:\/\/swesd.com\/ja\/blog\/custom-thermoformed-esd-trays-for-ic-packaging\/\">Custom thermoformed ESD trays for IC packaging<\/a><\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Bring the RFQ notes to the <a href=\"https:\/\/swesd.com\/ja\/esd-box\/\">Sanwei ESD box and packaging range<\/a> discussion, or <a href=\"https:\/\/swesd.com\/ja\/contact-us\/\">contact Sanwei<\/a> with drawings and acceptance owners.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Why not: Do not treat a pink dissipative bag quote as a shielding-bag package without barrier class language.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-7-what-are-the-fit-boundaries\">Part 7. What Are the Fit Boundaries?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">This guide explains selection language for ESD shielding bags. It does not certify attenuation or replace device MSL ownership.<\/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=\"Sanwei ESD corrugated box with reinforced corners - close esd-shielding-bag-selection-guide\" src=\"https:\/\/swesd.com\/wp-content\/uploads\/2026\/03\/9.webp\" \/><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3 style=\"margin:28px 0 12px\">What is an ESD shielding bag?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It is a barrier pack intended to limit electrostatic fields reaching packaged ESD-sensitive parts during storage or transport.<\/p>\n<h3 style=\"margin:28px 0 12px\">How is a shielding bag different from a pink bag?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Pink dissipative bags manage surface charge; shielding constructions add a barrier role buyers must specify separately.<\/p>\n<h3 style=\"margin:28px 0 12px\">Which size fields matter most?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Inner dimensions, seal style, and whether labels stay readable without opening the pack.<\/p>\n<h3 style=\"margin:28px 0 12px\">When is moisture pairing required?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">When device owners classify parts as moisture-sensitive and require dry-pack controls.<\/p>\n<h3 style=\"margin:28px 0 12px\">Can trays replace shielding bags?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Trays stage kits inside the EPA; they do not automatically replace transit shielding.<\/p>\n<h3 style=\"margin:28px 0 12px\">What should the RFQ attach?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Barrier class notes, size list, labeling rules, and any MSL or dry-pack expectations.<\/p>\n<h3 style=\"margin:28px 0 12px\">Does this page certify attenuation?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">No. Attenuation and acceptance belong to verified test methods and responsible engineers.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"references\">References<\/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\/\" rel=\"nofollow noopener\" target=\"_blank\">ESD Association packaging resources<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/webstore.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">IEC Webstore electrostatics<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.jedec.org\/\" rel=\"nofollow noopener\" target=\"_blank\">JEDEC moisture sensitivity resources<\/a> (context: esd-shielding-bag-selection-guide)<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>An ESD shielding bag is a barrier pack that limits electrostatic fields reaching sensitive components during storage and transport; buyers should map barrier class, size, labeling, and any moisture pairing before comparing quotes. Use it to separate shielding, dissipative, and moisture roles in one RFQ. It is a checklist for electronics buyers &#8211; not sizing or approval for esd-shielding-bag-selection-guide. Contents Part 1. What Problem Does an ESD Shielding Bag Solve? Part 2. How Should Barrier Class and Layer Construction Appear? Part 3. Which Size, Seal, and Label Fields Belong in the RFQ? Part 4. When Should Moisture and Desiccant Pairing Be Named? Part 5. How Do Trays and Outer Boxes [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1383,"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-2472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"acf":[],"_links":{"self":[{"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/posts\/2472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/comments?post=2472"}],"version-history":[{"count":1,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/posts\/2472\/revisions"}],"predecessor-version":[{"id":2567,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/posts\/2472\/revisions\/2567"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/media\/1383"}],"wp:attachment":[{"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/media?parent=2472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/categories?post=2472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swesd.com\/ja\/wp-json\/wp\/v2\/tags?post=2472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}