{"id":1281,"date":"2023-09-23T01:53:02","date_gmt":"2023-09-23T01:53:02","guid":{"rendered":"https:\/\/www.anzer-usa.com\/resources\/?p=1281"},"modified":"2025-07-22T07:21:31","modified_gmt":"2025-07-22T07:21:31","slug":"replacing-an-smt-soic","status":"publish","type":"post","link":"https:\/\/www.anzer-usa.com\/resources\/replacing-an-smt-soic\/","title":{"rendered":"PCB Assembly Repair: Replacing an SMT SOIC"},"content":{"rendered":"\n<p>Replacing an SMT SOIC (<a href=\"https:\/\/www.anzer-usa.com\/resources\/smt-soic\/\">Small Outline Integrated Circuit<\/a>) component can be a delicate task that requires some skill in soldering and handling electronic components. Here are the general steps you can follow:<\/p>\n\n\n\n<p><strong>Tools and Materials:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Replacement SMT SOIC component<\/li>\n\n\n\n<li>Soldering iron with a fine tip<\/li>\n\n\n\n<li>Soldering wire with flux (preferably lead-free)<\/li>\n\n\n\n<li>Desoldering braid or solder sucker (for removing the old component)<\/li>\n\n\n\n<li>Tweezers<\/li>\n\n\n\n<li>Anti-static wrist strap (optional)<\/li>\n\n\n\n<li>Magnifying glass or a microscope (for precision)<\/li>\n\n\n\n<li>ESD-safe work surface (Electrostatic Discharge protection)<\/li>\n<\/ol>\n\n\n\n<p><strong>Procedure for replacing an SMT SOIC:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Prepare your workspace:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Ensure you&#8217;re working on an ESD-safe surface to <a href=\"https:\/\/www.anzer-usa.com\/resources\/prevent-electronic-electrostatic-discharge\/\">prevent electrostatic component damage<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-assembly-workers-grounded\/\">Ground yourself<\/a> with an anti-static wrist strap to prevent static discharge.<\/li>\n\n\n\n<li>Ensure proper lighting and visibility.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Identify the faulty SOIC component:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Locate the SOIC component on the PCB that you need to replace. Ensure you&#8217;re working with the correct component.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Prepare for desoldering:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Apply a small amount of flux to the pins of the SOIC component you want to remove. This will make the <a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-desoldering\/\">desoldering<\/a> process more manageable.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Remove the old SOIC component:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Use a desoldering braid or solder sucker to remove the solder from each of the SOIC component&#8217;s pins. Heat each pin with the soldering iron and remove the solder until it&#8217;s free.<\/li>\n\n\n\n<li>Be patient and avoid overheating the PCB or the component. You may need to go back and forth between pins until the component can be gently lifted.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Lift the old component:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Once the solder is removed, gently lift the old SOIC component using tweezers. Be careful not to damage the PCB or the component.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Clean the PCB:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Use isopropyl alcohol, a brush, or a lint-free cloth to <a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-cleanliness\/\">clean the PCB<\/a> pads and remove any flux residue.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Prepare the new SOIC component:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Ensure the new SOIC component is the correct part and matches the orientation of the old one.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Solder the new component:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Apply a small amount of solder to one pad on the PCB. This will help hold the component in place during soldering.<\/li>\n\n\n\n<li>Position the new SOIC component on the pads and align it correctly.<\/li>\n\n\n\n<li>Solder one pin of the SOIC component while holding it in place.<\/li>\n\n\n\n<li>Double-check the alignment before soldering the remaining pins.<\/li>\n\n\n\n<li>Solder all the remaining pins individually, ensuring you have good solder joints (smooth, shiny, and not bridged).<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Inspect your work:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Use a magnifying glass or microscope to <a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-soldering-problems\/\">inspect the solder joints<\/a> for any defects or <a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-solder-bridges\/\">solder bridges<\/a>.<\/li>\n\n\n\n<li>Ensure the component is seated correctly and aligned when replacing an SMT SOIC.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Clean and test:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Clean the PCB again to remove any <a href=\"https:\/\/www.anzer-usa.com\/resources\/pcb-solder-flux-residue\/\">flux residue<\/a>.<\/li>\n\n\n\n<li>Test the circuit to ensure the new SOIC component functions as expected.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Secure the PCB:<\/strong>\n<ul class=\"wp-block-list\">\n<li>If the PCB assembly is part of a more extensive system, secure the PCB back into its housing and reassemble the device.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Dispose of old components safely:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Dispose of the old SOIC component according to your local electronic waste regulations.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>Please note that surface-mount soldering requires a steady hand, experience, and <a href=\"https:\/\/www.anzer-usa.com\/resources\/certified-ipc-application-specialist\/\">training<\/a>. If you&#8217;re not confident in replacing an SMT SOIC with your soldering skills, consider seeking assistance from a professional or practicing on less critical components first.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Replacing an SMT SOIC (Small Outline Integrated Circuit) component can be a delicate task that requires some skill in soldering and handling electronic components. Here are the general steps you can follow: Tools and Materials: Procedure for replacing an SMT SOIC: Please note that surface-mount&#8230;<\/p>\n","protected":false},"author":7,"featured_media":2394,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[162],"tags":[108,142,86,65],"class_list":["post-1281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronic-manufacturing","tag-electronic-functional-testing","tag-repairing-electronic-assemblies","tag-smt-components-assembly","tag-total-quality-management"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.anzer-usa.com\/resources\/wp-content\/uploads\/2024\/03\/20-Pin-SOIC-Package.jpg?fit=1200%2C600&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/posts\/1281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/comments?post=1281"}],"version-history":[{"count":3,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/posts\/1281\/revisions"}],"predecessor-version":[{"id":2622,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/posts\/1281\/revisions\/2622"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/media\/2394"}],"wp:attachment":[{"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/media?parent=1281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/categories?post=1281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.anzer-usa.com\/resources\/wp-json\/wp\/v2\/tags?post=1281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}