{"id":3560,"date":"2025-07-09T08:22:00","date_gmt":"2025-07-09T00:22:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=3560"},"modified":"2025-07-08T15:56:17","modified_gmt":"2025-07-08T07:56:17","slug":"how-to-perform-reflow-soldering-on-double-sided-pcb","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/","title":{"rendered":"Wie f\u00fchrt man Reflow-L\u00f6ten auf doppelseitigen Leiterplatten durch?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Inhalts\u00fcbersicht<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#Why_is_Double-Sided_PCB_Reflow_Soldering_a_Challenge_in_Electronics_Manufacturing\" >Warum ist das doppelseitige PCB-Reflow-L\u00f6ten eine Herausforderung in der Elektronikfertigung?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#In-Depth_Comparison_of_Two_Main_Soldering_Processes\" >Eingehender Vergleich der beiden wichtigsten L\u00f6tverfahren<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#Option_A_Double-Sided_Solder_Paste_Process_Ideal_for_High-Density_Components\" >Option A: Doppelseitiges L\u00f6tpastenverfahren (ideal f\u00fcr Bauteile mit hoher Dichte)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#Option_B_Solder_Paste_Red_Glue_Hybrid_Process_Solution_for_Large_Components\" >Option B: L\u00f6tpaste + Rotleim-Hybridverfahren (L\u00f6sung f\u00fcr gro\u00dfe Bauteile)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#5_Golden_Rules_for_Soldering_Quality_Control\" >5 Goldene Regeln f\u00fcr die Qualit\u00e4tskontrolle beim L\u00f6ten<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#Common_Issues_and_Engineering_Solutions\" >Allgemeine Probleme und technische L\u00f6sungen<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/#Future_Process_Trends\" >Zuk\u00fcnftige Prozesstrends<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_is_Double-Sided_PCB_Reflow_Soldering_a_Challenge_in_Electronics_Manufacturing\"><\/span>Warum ist das doppelseitige PCB-Reflow-L\u00f6ten eine Herausforderung in der Elektronikfertigung?<span class=\"ez-toc-section-end\"><\/span><\/h2><p>In elektronischen Hochleistungsprodukten wie Smartphones und industriellen Steuerger\u00e4ten, <a href=\"https:\/\/www.topfastpcb.com\/de\/products\/double-sided-flexible-pcb\/\">doppelseitige Leiterplatte<\/a> Designs sind zum Standard geworden. Das doppelseitige L\u00f6ten birgt jedoch zwei gro\u00dfe Herausforderungen:<\/p><ol class=\"wp-block-list\"><li><strong>Komplexit\u00e4t des W\u00e4rmemanagements<\/strong> - Beim L\u00f6ten auf der zweiten Seite wird die erste Seite wieder erw\u00e4rmt, was zur Abl\u00f6sung von Bauteilen oder zum Versagen der L\u00f6tstellen f\u00fchren kann.<\/li>\n\n<li><strong>Dilemma bei der Prozessauswahl<\/strong> - L\u00f6tpasten- und Rotleimverfahren haben jeweils Vor- und Nachteile, die je nach Bauteil-Layout sorgf\u00e4ltig abgewogen werden m\u00fcssen.<\/li><\/ol><p><a href=\"https:\/\/www.topfastpcb.com\/de\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">Konsultieren Sie unsere Prozessingenieure<\/a>\u00a0f\u00fcr ma\u00dfgeschneiderte L\u00f6sungen<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb.jpg\" alt=\"PCB-Reflow-L\u00f6ten\" class=\"wp-image-3561\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"In-Depth_Comparison_of_Two_Main_Soldering_Processes\"><\/span>Eingehender Vergleich der beiden wichtigsten L\u00f6tverfahren<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Option_A_Double-Sided_Solder_Paste_Process_Ideal_for_High-Density_Components\"><\/span>Option A: Doppelseitiges L\u00f6tpastenverfahren (ideal f\u00fcr Bauteile mit hoher Dichte)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Am besten f\u00fcr<\/strong>:<\/p><ul class=\"wp-block-list\"><li>PCBs mit BGAs, QFNs oder anderen Pr\u00e4zisions-ICs auf beiden Seiten<\/li>\n\n<li>Leichte Komponenten insgesamt<\/li><\/ul><p><strong>Wichtige Schritte<\/strong>:<\/p><ol class=\"wp-block-list\"><li>Seite A: Lotpaste drucken \u2192 Bauteile platzieren \u2192 Reflow-L\u00f6ten (Spitzentemperatur 245\u00b0C)<\/li>\n\n<li>Auf Raumtemperatur abk\u00fchlen lassen, dann PCB umdrehen<\/li>\n\n<li>Seite B: Lotpaste drucken \u2192 Bauteile platzieren \u2192 gestuftes Temperaturprofil verwenden (Spitzentemperatur um 5-10\u00b0C reduzieren)<\/li><\/ol><p><strong>Vorteile<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Hohe Zuverl\u00e4ssigkeit der L\u00f6tstellen<\/li>\n\n<li>Geeignet f\u00fcr die automatisierte Massenproduktion<\/li><\/ul><p><strong>Risiken<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Gro\u00dfe Bauteile k\u00f6nnen sich w\u00e4hrend des zweiten Reflows l\u00f6sen<\/li>\n\n<li>F\u00fcr das L\u00f6ten auf der zweiten Seite ist eine pr\u00e4zise Temperaturregelung erforderlich<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Option_B_Solder_Paste_Red_Glue_Hybrid_Process_Solution_for_Large_Components\"><\/span>Option B: L\u00f6tpaste + Rotleim-Hybridverfahren (L\u00f6sung f\u00fcr gro\u00dfe Bauteile)<span class=\"ez-toc-section-end\"><\/span><\/h3><p><strong>Am besten f\u00fcr<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Eine Seite hat gro\u00dfe Anschl\u00fcsse\/Elektrolytkondensatoren<\/li>\n\n<li>Gemischte Layouts mit erheblichen Gewichtsunterschieden<\/li><\/ul><p><strong>Innovativer Prozess<\/strong>:<\/p><ol class=\"wp-block-list\"><li>L\u00f6tpastenseite (Seite A): Standard-Reflow-L\u00f6ten<\/li>\n\n<li>Rote Klebeseite (Seite B): &#8220;Print-Place-Cure&#8221; dreistufiges Verfahren:<\/li><\/ol><ul class=\"wp-block-list\"><li>Druckgenauigkeit des roten Klebers: \u00b10,1 mm<\/li>\n\n<li>Aush\u00e4rtungstemperatur: 120-150\u00b0C (viel niedriger als der Schmelzpunkt der L\u00f6tpaste)<\/li>\n\n<li>Optionales Wellenl\u00f6ten f\u00fcr erh\u00f6hte Zuverl\u00e4ssigkeit<\/li><\/ul><p><strong>Technische Hinweise<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Der rote Kleber muss mindestens 0,3 mm von den L\u00f6tpads entfernt sein.<\/li>\n\n<li>Verl\u00e4ngert die Aush\u00e4rtungszeit um 30 %, um eine schwache Haftung zu verhindern<\/li><\/ul><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-1.jpg\" alt=\"PCB-Reflow-L\u00f6ten\" class=\"wp-image-3562\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><p><a href=\"https:\/\/www.topfastpcb.com\/de\/contact\/\">Holen Sie sich kostenlose Bastelanleitungen von Experten<\/a><\/p><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Golden_Rules_for_Soldering_Quality_Control\"><\/span>5 Goldene Regeln f\u00fcr die Qualit\u00e4tskontrolle beim L\u00f6ten<span class=\"ez-toc-section-end\"><\/span><\/h2><ul class=\"wp-block-list\"><li><strong>Optimieren des Temperaturprofils<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Erste Seite: Standard-Ramp-Soak-Spike (RSS)-Kurve (2-3\u00b0C\/s Heizrate)<\/li>\n\n<li>Zweite Seite:Ramp-to-Spike (RTS)-Kurve verwenden (verl\u00e4ngerte Vorw\u00e4rmzeit)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Richtlinien f\u00fcr das Komponentenlayout<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Platzieren Sie schwere Komponenten auf der gleichen Seite<\/li>\n\n<li>Versetzte doppelseitige BGAs zur Vermeidung thermischer Spannungskonzentration<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Auswahlkriterien f\u00fcr L\u00f6tpaste<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Zweite Seite: Niedertemperatur-L\u00f6tpaste verwenden (z. B. Sn42\/Bi58)<\/li>\n\n<li>Viskosit\u00e4t des roten Klebers:&gt;50.000 cps<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Kritische Ger\u00e4teparameter<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Neigung des Reflow-Ofen-Transportbandes: 5-7\u00b0<\/li>\n\n<li>Abk\u00fchlungsrate: 4-6\u00b0C\/s<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Upgrades der Inspektionstechnologie<\/strong><\/li><\/ul><ul class=\"wp-block-list\"><li>Verwendung von 3D SPI zur Pr\u00fcfung der Lotpastendicke<\/li>\n\n<li>Obligatorische akustische Mikroskopie nach dem zweiten Reflow<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Issues_and_Engineering_Solutions\"><\/span>Allgemeine Probleme und technische L\u00f6sungen<span class=\"ez-toc-section-end\"><\/span><\/h2><p><strong>Problem 1: QFN-Komponentenverschiebung w\u00e4hrend des zweiten Reflows<\/strong><\/p><ul class=\"wp-block-list\"><li>L\u00f6sung: Auftragen von Hochtemperaturkleber nach dem L\u00f6ten der ersten Seite<\/li>\n\n<li>Parameter:Klebstoff mit Aush\u00e4rtungstoleranz &gt;200\u00b0C verwenden<\/li><\/ul><p><strong>Problem 2: Abfallen von Bauteilen beim Wellenl\u00f6ten (rote Klebeseite)<\/strong><\/p><ul class=\"wp-block-list\"><li>Verbesserungen:<\/li><\/ul><ol class=\"wp-block-list\"><li>Nachh\u00e4rtung mit UV nach dem Auftragen des roten Klebers<\/li>\n\n<li>Vor dem Wellenl\u00f6ten auf 100\u00b0C vorheizen<\/li><\/ol><p><strong>Problem 3: \u00dcberm\u00e4\u00dfige Lunkerbildung in BGA-Verbindungen<\/strong><\/p><ul class=\"wp-block-list\"><li>Prozess-Optimierung:<\/li>\n\n<li>Verl\u00e4ngern Sie die Auftauzeit der Lotpaste auf 8 Stunden<\/li>\n\n<li>Stickstoffunterst\u00fctztes Reflow-Verfahren verwenden (O\u2082 &lt;500ppm)<\/li><\/ul><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-2.jpg\" alt=\"PCB-Reflow-L\u00f6ten\" class=\"wp-image-3563\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/07\/double-sided-pcb-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Future_Process_Trends\"><\/span>Zuk\u00fcnftige Prozesstrends<span class=\"ez-toc-section-end\"><\/span><\/h2><ol class=\"wp-block-list\"><li><strong>L\u00f6ten bei niedriger Temperatur<\/strong>: Sn-Bi-L\u00f6tlegierungen mit gepulster Erw\u00e4rmung<\/li>\n\n<li><strong>Intelligente Temperaturregelung<\/strong>: Auf maschinellem Lernen basierende Profiloptimierung in Echtzeit<\/li>\n\n<li><strong>Hybrides F\u00fcgen<\/strong>: Kombinierte L\u00f6sungen aus L\u00f6tpaste und leitf\u00e4higem Klebstoff<\/li><\/ol><p>Durch die systematische Anwendung dieser Schl\u00fcsseltechniken k\u00f6nnen Ingenieure First-Pass-Ausbeuten von \u00fcber 99,5 % erreichen.Wir empfehlen die Implementierung von Prozessfenster-\u00dcberwachungssystemen zur kontinuierlichen Optimierung in Produktionsumgebungen.<\/p>","protected":false},"excerpt":{"rendered":"<p>Das Reflow-L\u00f6ten von doppelseitigen Leiterplatten ist ein Kernprozess in der Elektronikfertigung, der die Auswahl von L\u00f6tpaste und rotem Kleber, die Steuerung der Temperaturkurve und Strategien f\u00fcr das doppelseitige L\u00f6ten umfasst. Dieser Artikel analysiert den L\u00f6tprozess f\u00fcr doppelseitige Leiterplatten, bietet L\u00f6sungen f\u00fcr h\u00e4ufige Probleme und gibt Tipps zur Prozessoptimierung, um die L\u00f6tertr\u00e4ge und die Produktionseffizienz zu verbessern.<\/p>","protected":false},"author":1,"featured_media":3564,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[111,320],"class_list":["post-3560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","tag-pcb","tag-pcb-reflow-soldering"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to perform reflow soldering on double-sided PCB? - Topfastpcb<\/title>\n<meta name=\"description\" content=\"Master the key steps of double-sided PCB reflow soldering, from solder paste and red glue process selection to temperature control techniques, providing a complete soldering solution to solve common problems such as cold soldering and component loss.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/how-to-perform-reflow-soldering-on-double-sided-pcb\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to perform reflow soldering on double-sided PCB? 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