{"id":5664,"date":"2025-07-30T00:00:00","date_gmt":"2025-07-30T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/rj45-connectors-reflow-vs-wave-soldering-explained\/"},"modified":"2026-06-22T08:46:09","modified_gmt":"2026-06-22T08:46:09","slug":"rj45-connectors-reflow-vs-wave-soldering-explained","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/rj45-connectors-reflow-vs-wave-soldering-explained","title":{"rendered":"H\u01b0\u1edbng d\u1eabn so s\u00e1nh ph\u01b0\u01a1ng ph\u00e1p h\u00e0n l\u1ea1i (reflow) v\u00e0 h\u00e0n s\u00f3ng (wave soldering) cho \u0111\u1ea7u n\u1ed1i RJ45"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45.webp\" alt=\"RJ45 Connector Reflow vs. Wave Soldering\" class=\"wp-image-5659\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/030b77c0f67a4742bc82eb114fd17e45-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >Why Soldering Method Matters for RJ45 Connectors<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In modern electronics manufacturing, the choice between <strong>h\u00e0n ch\u1ea3y<\/strong> and <strong>s\u00f3ng d\u00e0nh cho linh ki\u1ec7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u00e0n b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p s\u00f3ng.<\/strong> is critical\u2014especially for components like <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\"><strong>B\u1ed9 n\u1ed1i RJ45<\/strong><\/a>, which are commonly used in Ethernet networking applications. These two soldering methods require different connector designs (SMT vs. THT) and have varying implications for reliability, production efficiency, and board layout.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This article outlines the key differences between reflow and wave soldering for RJ45 connectors and helps engineers select the right connector for their design and process.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >SMT vs. THT RJ45 Connectors: Basic Definitions<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3.webp\" alt=\"SMT vs. THT RJ45 Connectors\" class=\"wp-image-5660\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/16c0099d1eab4cc4ae8dddd254612ee3-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Mounting Method<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>SMT (C\u00f4ng ngh\u1ec7 g\u1eafn b\u1ec1 m\u1eb7t)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RJ45 connector with surface mount terminals<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u00e0n ch\u1ea3y l\u1ea1i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>THT (Through-Hole Technology)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RJ45 connector with insertion pins<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u00e0n s\u00f3ng<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17517-smt-rj45-connector.htm\"><strong>SMT RJ45 connectors<\/strong><\/a> are designed for automated placement on surface pads and are ideal for high-density PCBs.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm?ca=190&amp;cv=1116\"><strong>THT RJ45 connectors<\/strong><\/a> use pins that go through holes in the PCB and offer stronger mechanical strength.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >Reflow Soldering for SMT RJ45 Connectors<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11.webp\" alt=\"Reflow Soldering for SMT RJ45 Connectors\" class=\"wp-image-5661\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/28619a116b8b408ea74e576a31457c11-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Process Overview:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reflow soldering involves applying solder paste to pads, placing the connector, and heating the assembly in a controlled oven where the solder melts and reflows.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Heating Method:<\/strong> Convection or infrared heating from top-down<\/p><\/li><li><p><strong>Peak Temperature:<\/strong> Typically up to 240\u2013260\u00b0C<\/p><\/li><li><p><strong>PCB Design:<\/strong> Flat surface pads; no plated through-holes<\/p><\/li><li><p><strong>Material Requirement:<\/strong> High-temperature thermoplastics (e.g., LCP)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u01afu \u0111i\u1ec3m:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Supports full <strong>SMT assembly line<\/strong> (no manual insertion)<\/p><\/li><li><p>T\u01b0\u01a1ng th\u00edch v\u1edbi <strong>automated pick-and-place<\/strong><\/p><\/li><li><p>L\u00fd t\u01b0\u1edfng cho <strong>space-saving and multilayer PCBs<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>The connector housing must withstand high temperatures.<\/p><\/li><li><p>Mechanical strength is lower compared to through-hole types, so <strong>metal pegs or board locks<\/strong> are often used.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >Wave Soldering for THT RJ45 Connectors<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265.webp\" alt=\"Wave Soldering for THT RJ45 Connectors\" class=\"wp-image-5662\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/71fd904425874776b372de353d901265-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Process Overview:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In wave soldering, a PCB with inserted connectors passes over a molten solder wave, which bonds the pins to the PCB.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Heating Method:<\/strong> Bottom-up contact with solder wave<\/p><\/li><li><p><strong>Peak Temperature:<\/strong> Around 250\u00b0C, short exposure<\/p><\/li><li><p><strong>PCB Design:<\/strong> Plated through-holes for pin insertion<\/p><\/li><li><p><strong>Material Requirement:<\/strong> Sufficient heat resistance for solder contact<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u01afu \u0111i\u1ec3m:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Stronger mechanical fixation<\/strong> due to through-hole pins<\/p><\/li><li><p>Easier to solder <strong>multiple large connectors<\/strong> in one pass<\/p><\/li><li><p>Lower material cost for connector body<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>May require <strong>manual pre-insertion<\/strong><\/p><\/li><li><p>Less suitable for high-density boards or double-sided SMT assembly<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >Comparison Table: Reflow vs. Wave Soldering for RJ45 Connectors<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Reflow Soldering (SMT)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Wave Soldering (THT)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Automation Level<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>High (Fully automated)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Medium (Insertion often manual)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Connector Mounting<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Surface mount<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Through-hole<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Moderate (with support pins)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>High (pin-through-hole)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Temperature Tolerance<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>High (plastic must resist 260\u00b0C)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Moderate (localized heating)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>Assembly Cost<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Higher for connector; efficient for large volumes<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower connector cost; higher labor<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>PCB Density Suitability<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Xu\u1ea5t s\u1eafc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ea1n ch\u1ebf<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >Best Practices for Selecting the Right RJ45 Connector<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When choosing between SMT and THT RJ45 connectors, consider the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 <strong>Ch\u1ecdn <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17517-smt-rj45-connector.htm\"><strong>SMT RJ45<\/strong><\/a> n\u1ebfu:<\/p><ul><li><p>You have a high-density PCB layout<\/p><\/li><li><p>The product is mass-produced via SMT lines<\/p><\/li><li><p>Connector height and profile are design constraints<\/p><\/li><\/ul><\/li><li><p>\u2705 <strong>Ch\u1ecdn <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm?ca=190&amp;cv=1116\"><strong>THT RJ45<\/strong><\/a> n\u1ebfu:<\/p><ul><li><p>Your design needs superior mechanical strength<\/p><\/li><li><p>You\u2019re using a hybrid assembly process (SMT + THT)<\/p><\/li><li><p>Cost-sensitive applications tolerate manual insertion<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >&#x1f517; Recommended Products by LINK-PP<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/439792.htm\"><strong>LPJG0926HENL<br><\/strong><\/a> \u2013 THT RJ45 with integrated magnetics, PoE+ support<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/471642.htm\"><strong>LPJG4811CNL<\/strong><\/a>\u2013 Single Port RJ45 Connector with 1000Base-T Integrated Magnetics , high-temp plastic for reflow soldering<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The soldering process greatly influences RJ45 connector selection. <strong>Reflow soldering with SMT connectors<\/strong> supports automated, high-speed assembly lines and space-constrained designs. <strong>Wave soldering with THT connectors<\/strong> provides durability and reliability for industrial or cost-sensitive applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding these differences ensures better design decisions, improved production yields, and long-term product reliability.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><h3>V\u1ec1 t\u00e1c gi\u1ea3<\/h3><p>This article was written by the <strong>LINK-PP Technical Engineering Team<\/strong>. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">LINK-PP<\/a> is a high-tech enterprise specializing in the research and manufacturing of network connectors. With over 20 years of industry experience, LINK-PP serves more than 3,000 global customers.<\/p><p>Our core engineers have backgrounds in electronic engineering and SMT manufacturing processes, and are deeply involved in the structural design and production technology of RJ45 connectors.<\/p><p>If you have questions about the technical details or product selection mentioned in this article, feel free to <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/page\/contactus.htm\"><strong>li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/strong><\/a>.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Gi\u1ea3i th\u00edch s\u1ef1 kh\u00e1c nhau gi\u1eefa h\u00e0n l\u1ea1i (reflow) v\u00e0 h\u00e0n s\u00f3ng (wave soldering) \u0111\u1ed1i v\u1edbi \u0111\u1ea7u n\u1ed1i RJ45. T\u00ecm hi\u1ec3u khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p g\u1eafn b\u1ec1 m\u1eb7t (SMT) ho\u1eb7c g\u1eafn xuy\u00ean l\u1ed7 (THT), c\u0169ng nh\u01b0 c\u00e1ch ph\u01b0\u01a1ng ph\u00e1p h\u00e0n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>","protected":false},"author":1,"featured_media":5663,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22,25],"class_list":["post-5664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors","tag-modular-jack"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5664","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=5664"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5664\/revisions"}],"predecessor-version":[{"id":11294,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5664\/revisions\/11294"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5663"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}