{"id":3754,"date":"2025-08-03T08:54:00","date_gmt":"2025-08-03T00:54:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=3754"},"modified":"2025-08-02T18:25:55","modified_gmt":"2025-08-02T10:25:55","slug":"key-parameters-of-pcb-circuit-boards","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/","title":{"rendered":"Wichtige Parameter von PCB-Leiterplatten"},"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\/key-parameters-of-pcb-circuit-boards\/#Detailed_Explanation_of_Key_PCB_Parameters\" >Detaillierte Erl\u00e4uterung der wichtigsten PCB-Parameter<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#1_Electrical_Performance_Parameters\" >1. Elektrische Leistungsparameter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#2_Thermal_Performance_Parameters\" >2. Thermische Leistungsparameter<\/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\/key-parameters-of-pcb-circuit-boards\/#3_Mechanical_Performance_Parameters\" >3. Mechanische Leistungsparameter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#4_Structural_Characteristics\" >4. Strukturelle Merkmale<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#5_Reliability_Testing_Metrics\" >5. Metriken f\u00fcr Zuverl\u00e4ssigkeitstests<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#6_Environmental_Process_Compliance\" >6. Einhaltung von Umwelt- und Verfahrensvorschriften<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#PCB_Board_Classification_and_Selection\" >Klassifizierung und Auswahl von PCB-Platten<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#1_Common_PCB_Materials\" >1. G\u00e4ngige PCB-Materialien<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#2_PCB_Material_Grades_Comparison\" >2. Vergleich der PCB-Materialsorten<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/de\/blog\/key-parameters-of-pcb-circuit-boards\/#3_How_to_Choose_the_Right_PCB_Material\" >3. Wie w\u00e4hlt man das richtige PCB-Material?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Detailed_Explanation_of_Key_PCB_Parameters\"><\/span><strong>Detaillierte Erl\u00e4uterung der wichtigsten PCB-Parameter<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Electrical_Performance_Parameters\"><\/span><strong>1. Elektrische Leistungsparameter<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>Die elektrischen Eigenschaften einer Leiterplatte wirken sich direkt auf die Signalintegrit\u00e4t aus, insbesondere bei Hochfrequenz- und Hochgeschwindigkeitsschaltungen.<\/p><ul class=\"wp-block-list\"><li><strong>Dielektrizit\u00e4tskonstante (Dk)<\/strong> - Misst die F\u00e4higkeit eines Materials, elektrische Energie zu speichern. Niedrigere Dk-Werte (z. B. PTFE mit Dk\u22482,2) erm\u00f6glichen eine schnellere Signal\u00fcbertragung und sind daher ideal f\u00fcr 5G- und Millimeterwellenanwendungen.<\/li>\n\n<li><strong>Dissipationsfaktor (Df\/Verlusttangente)<\/strong> - Zeigt den Energieverlust des Signals an. Hochfrequenzanwendungen (z. B. Radar, Satellitenkommunikation) erfordern Df &lt; 0,005.<\/li>\n\n<li><strong>Oberfl\u00e4chen-\/Volumenwiderstand<\/strong> - Der hohe Isolationswiderstand (&gt;10\u00b9\u00b2 \u03a9-cm) verhindert Leckstr\u00f6me, was f\u00fcr Hochspannungsleiterplatten (z. B. Leistungsmodule) entscheidend ist.<\/li>\n\n<li><strong>Durchschlagsspannung<\/strong> - Standard-FR4 h\u00e4lt \u226520 kV\/mm stand, w\u00e4hrend Keramiksubstrate bis zu 50 kV\/mm vertragen k\u00f6nnen.<\/li>\n\n<li><strong>Impedanzkontrolle<\/strong> - Hochgeschwindigkeitsleiterplatten (z. B. DDR5, PCIe 6.0) erfordern eine enge Impedanztoleranz (\u00b15%), um Signalreflexionen zu minimieren.<\/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\/08\/PCB-parameters.jpg\" alt=\"PCB-Parameter\" class=\"wp-image-3756\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Thermal_Performance_Parameters\"><\/span><strong>2. Thermische Leistungsparameter<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>Die Hitzebest\u00e4ndigkeit einer Leiterplatte bestimmt ihre Zuverl\u00e4ssigkeit in Hochtemperaturumgebungen, insbesondere f\u00fcr bleifreies L\u00f6ten und Langzeitstabilit\u00e4t.<\/p><ul class=\"wp-block-list\"><li><strong>Glas\u00fcbergangstemperatur (Tg)<\/strong> - Standard-FR4 hat eine Tg\u2248130\u00b0C, w\u00e4hrend Leiterplatten mit hoher Tg (Tg\u2265170\u00b0C) in der Automobil- und Milit\u00e4relektronik verwendet werden.<\/li>\n\n<li><strong>Thermische Zersetzungstemperatur (Td)<\/strong> - Werkstoffe mit Td &gt; 325\u00b0C (z.B. Isola 370HR) werden f\u00fcr bleifreies L\u00f6ten bevorzugt.<\/li>\n\n<li><strong>W\u00e4rmeleitf\u00e4higkeit<\/strong> - FR4 hat eine niedrige W\u00e4rmeleitf\u00e4higkeit (~0,3 W\/m-K), w\u00e4hrend Leiterplatten mit Metallkern (z. B. Aluminium) 10 W\/m-K erreichen k\u00f6nnen, was sie ideal f\u00fcr die LED-K\u00fchlung macht.<\/li>\n\n<li><strong>W\u00e4rmeausdehnungskoeffizient (CTE)<\/strong> - Der WAK in der Z-Achse sollte &lt;50 ppm\/\u00b0C betragen, um Delaminierung in mehrlagigen Leiterplatten zu verhindern (IC-Substrate erfordern WAK\u22486 ppm\/\u00b0C).<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Mechanical_Performance_Parameters\"><\/span><strong>3. Mechanische Leistungsparameter<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>Die mechanische Festigkeit wirkt sich auf die Montageprozesse und die langfristige Haltbarkeit aus.<\/p><ul class=\"wp-block-list\"><li><strong>Biegefestigkeit<\/strong> - Standard-FR4 reicht von 400-600 MPa, w\u00e4hrend flexible Leiterplatten (Polyimid) &gt;200 MPa ben\u00f6tigen.<\/li>\n\n<li><strong>St\u00e4rke des Peelings<\/strong> - Die Kupferhaftung muss mehr als 1,0 N\/mm (IPC-Norm) betragen, um ein Abl\u00f6sen der Folie beim L\u00f6ten zu verhindern.<\/li>\n\n<li><strong>Wasserabsorption<\/strong> - Geringe Feuchtigkeitsaufnahme (&lt;0,2%) verhindert Blasenbildung; Hochfrequenzlaminate halten normalerweise &lt;0,1%.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Structural_Characteristics\"><\/span><strong>4. Strukturelle Merkmale<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>Fertigungspr\u00e4zision ist entscheidend f\u00fcr <a href=\"https:\/\/www.topfastpcb.com\/de\/products\/hdi-pcb\/\">High-Density-Interconnect (HDI)<\/a> und miniaturisierte Designs.<\/p><ul class=\"wp-block-list\"><li><strong>Kupferdickentoleranz<\/strong> - Standard 1 oz Kupfer hat eine Toleranz von \u00b110%, w\u00e4hrend Pr\u00e4zisionsschaltungen \u00b15% erfordern.<\/li>\n\n<li><strong>Ebene-zu-Ebene-Registrierungsgenauigkeit<\/strong> - HDI-Leiterplatten erfordern eine Ausrichtung von &lt;25 \u03bcm, w\u00e4hrend Standard-Multilayer-Leiterplatten &lt;50 \u03bcm erlauben.<\/li>\n\n<li><strong>Minimum Spur\/Abstand (L\/S)<\/strong> - Standard-Leiterplatten verwenden 0,1 mm\/0,1 mm, w\u00e4hrend moderne IC-Substrate 20 \u03bcm\/20 \u03bcm erreichen.<\/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\/08\/PCB-parameters-1.jpg\" alt=\"PCB-Parameter\" class=\"wp-image-3757\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Reliability_Testing_Metrics\"><\/span><strong>5. Metriken f\u00fcr Zuverl\u00e4ssigkeitstests<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>PCBs m\u00fcssen strenge Tests bestehen, um ihre langfristige Stabilit\u00e4t zu gew\u00e4hrleisten.<\/p><ul class=\"wp-block-list\"><li><strong>Konduktiver anodischer Filamentwiderstand (CAF)<\/strong> - Bewertet Kurzschlussrisiken unter feuchten Bedingungen (85\u00b0C\/85% RH f\u00fcr 1000 Stunden).<\/li>\n\n<li><strong>Oberfl\u00e4chenisolationswiderstand (SIR)<\/strong> - Muss mehr als 10\u2078 \u03a9 betragen (gem\u00e4\u00df JIS-Normen).<\/li>\n\n<li><strong>Thermischer Zyklustest<\/strong> - \u00dcbersteht 100 Zyklen (-55\u00b0C bis 125\u00b0C) ohne Rissbildung (f\u00fcr Leiterplatten in der Automobilindustrie sind strengere Tests erforderlich).<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Environmental_Process_Compliance\"><\/span><strong>6. Einhaltung von Umwelt- und Verfahrensvorschriften<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><p>Umweltvorschriften (z. B. RoHS, REACH) treiben die Entwicklung von PCB-Materialien voran.<\/p><ul class=\"wp-block-list\"><li><strong>Vergleichender Tracking-Index (CTI)<\/strong> - Medizinische Ger\u00e4te ben\u00f6tigen Klasse 3 (400-600 V), w\u00e4hrend industrielle Steuerungen Klasse 2 ben\u00f6tigen.<\/li>\n\n<li><strong>Halogenfrei<\/strong> - Der Chlor-\/Bromgehalt muss &lt;900 ppm sein, um toxische Emissionen zu reduzieren.<\/li>\n\n<li><strong>Schwerentflammbarkeit (UL94)<\/strong> - V-0 ist die h\u00f6chste Einstufung, die f\u00fcr Anwendungen in der Luft- und Raumfahrt vorgeschrieben ist.<\/li><\/ul><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Board_Classification_and_Selection\"><\/span><strong>Klassifizierung und Auswahl von PCB-Platten<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Common_PCB_Materials\"><\/span><strong>1. G\u00e4ngige PCB-Materialien<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>FR4<\/strong> - Standard-Epoxid-Glaslaminat f\u00fcr Unterhaltungselektronik.<\/li>\n\n<li><strong>CEM-3<\/strong> - Verbundsubstrat, kosteng\u00fcnstig f\u00fcr einfache doppelseitige Leiterplatten.<\/li>\n\n<li><strong><a href=\"https:\/\/www.topfastpcb.com\/de\/products\/high-tg-rigid-pcb\/\">Hoch-Tg-PCBs<\/a> (Tg\u2265170\u00b0C)<\/strong> - Hitzebest\u00e4ndig f\u00fcr den Einsatz im Automobil- und Milit\u00e4rbereich.<\/li>\n\n<li><strong>Hochfrequenz-Laminate (z. B. Rogers RO4003C)<\/strong> - Niedriges Dk\/Df f\u00fcr 5G\/Radar-Anwendungen.<\/li>\n\n<li><strong><a href=\"https:\/\/www.topfastpcb.com\/de\/products\/metal-core-pcb\/\">PCBs mit Metallkern<\/a> (Aluminium\/Kupfer)<\/strong> - Hervorragendes W\u00e4rmemanagement f\u00fcr LEDs und Leistungsmodule.<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_PCB_Material_Grades_Comparison\"><\/span><strong>2. Vergleich der PCB-Materialsorten<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Material Klasse<\/th><th>Merkmale<\/th><th>Typische Anwendungen<\/th><\/tr><\/thead><tbody><tr><td><strong>94HB<\/strong><\/td><td>Papierbasiert, nicht flammenhemmend<\/td><td>Kosteng\u00fcnstige Unterhaltungselektronik<\/td><\/tr><tr><td><strong>94V0<\/strong><\/td><td>Flammenhemmendes Papiersubstrat<\/td><td>Schalttafeln f\u00fcr Haushaltsger\u00e4te<\/td><\/tr><tr><td><strong>CEM-1<\/strong><\/td><td>Einseitiges Glasfasergewebe<\/td><td>Einfache Schaltungen<\/td><\/tr><tr><td><strong>CEM-3<\/strong><\/td><td>Doppelseitiges Halbglas<\/td><td>Kosteng\u00fcnstige doppellagige PCBs<\/td><\/tr><tr><td><strong>FR4<\/strong><\/td><td>Standard-Glasfaser<\/td><td>Unterhaltungselektronik, industrielle Steuerungen<\/td><\/tr><tr><td><strong>Hoch-Tg FR4<\/strong><\/td><td>Hochtemperaturbest\u00e4ndig<\/td><td>Automobilindustrie, Luft- und Raumfahrt<\/td><\/tr><\/tbody><\/table><\/figure><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\/08\/PCB-parameters-3.jpg\" alt=\"PCB-Parameter\" class=\"wp-image-3758\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-3.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-3-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/PCB-parameters-3-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_How_to_Choose_the_Right_PCB_Material\"><\/span><strong>3. Wie w\u00e4hlt man das richtige PCB-Material?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Hochfrequenz-Anwendungen<\/strong> \u2192 Materialien mit niedrigem Dk\/Df-Wert (Rogers, Taconic).<\/li>\n\n<li><strong>Umgebungen mit hohen Temperaturen<\/strong> \u2192 Hoch-Tg (\u2265170\u00b0C) oder Hoch-Td (&gt;325\u00b0C) Materialien.<\/li>\n\n<li><strong>W\u00e4rmeableitung mit hoher Leistung<\/strong> \u2192 Metallkern oder hoch w\u00e4rmeleitf\u00e4higes FR4.<\/li>\n\n<li><strong>Umweltvertr\u00e4gliche Anforderungen<\/strong> \u2192 Halogenfreie, RoHS-konforme Materialien.<\/li><\/ul><p>Die Auswahl der Leiterplattenparameter wirkt sich direkt auf die Produktleistung, die Zuverl\u00e4ssigkeit und die Kosten aus. Ingenieure m\u00fcssen je nach Anwendungsszenario (z. B. hohe Frequenz, hohe Temperatur, hohe Leistung) geeignete Leiterplattenmaterialien (z. B. FR4, CEM-3, PCB mit hohem Tg-Wert usw.) ausw\u00e4hlen und das Design optimieren, um die Signalintegrit\u00e4t, die W\u00e4rmeableitung und die mechanische Festigkeit zu verbessern.<\/p>","protected":false},"excerpt":{"rendered":"<p>Die Leistung von Leiterplatten h\u00e4ngt von mehreren Schl\u00fcsselparametern ab, z. B. von der Dielektrizit\u00e4tskonstante (DK-Wert), der Glas\u00fcbergangstemperatur (Tg), der W\u00e4rmebest\u00e4ndigkeit (Td), dem CTI (Kriechspurindex) und dem CTE (W\u00e4rmeausdehnungskoeffizient). Verschiedene Leiterplattenmaterialien (z. B. FR4, CEM-3 und PCB mit hoher Tg) eignen sich f\u00fcr unterschiedliche Anwendungen, z. B. Hochfrequenzkommunikation, Automobilelektronik oder Hochleistungsger\u00e4te.<\/p>","protected":false},"author":1,"featured_media":3759,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[336],"class_list":["post-3754","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pcb-parameters"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Key parameters of PCB circuit boards - Topfastpcb<\/title>\n<meta name=\"description\" content=\"Key parameters of PCB circuit boards, including dielectric constant (DK value), glass transition temperature (Tg), heat resistance (Td), CTI, CTE, etc. Understand the characteristics and application scenarios of different board materials (FR4, CEM-3, high Tg PCB) to optimize PCB design and improve performance and reliability.\" \/>\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\/key-parameters-of-pcb-circuit-boards\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Key parameters of PCB circuit boards - 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