{"id":1598,"date":"2026-01-12T14:27:00","date_gmt":"2026-01-12T06:27:00","guid":{"rendered":"https:\/\/txjpcba.com\/?p=1598"},"modified":"2026-03-04T17:05:47","modified_gmt":"2026-03-04T09:05:47","slug":"brasage-a-la-vague-et-brasage-selectif","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/fr\/brasage-a-la-vague-et-brasage-selectif\/","title":{"rendered":"Brasage \u00e0 la vague et brasage s\u00e9lectif"},"content":{"rendered":"

Introduction<\/h2>\r\n\r\n\r\n\r\n

Dans le monde des Assemblage de circuits imprim\u00e9s (PCBA)<\/strong>, Le brasage est l'un des processus les plus critiques qui d\u00e9terminent \u00e0 la fois la fiabilit\u00e9 et la performance des produits \u00e9lectroniques. Parmi les diff\u00e9rentes techniques de brasage, le brasage \u00e0 la vague et le brasage s\u00e9lectif<\/strong><\/a> sont deux m\u00e9thodes largement utilis\u00e9es pour les composants \u00e0 trous traversants. Bien qu'elles visent toutes deux \u00e0 obtenir des joints solides et fiables, elles diff\u00e8rent consid\u00e9rablement en termes de processus, d'application et d'ad\u00e9quation.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n

Soudure \u00e0 la vague<\/h2>\r\n\r\n\r\n\r\n
    \r\n
  • Processus<\/strong>: Le circuit imprim\u00e9 passe sur une \u201cvague\u201d continue de soudure en fusion. Le flux est appliqu\u00e9 au pr\u00e9alable pour nettoyer et pr\u00e9parer les surfaces, et la vague de soudure relie simultan\u00e9ment toutes les broches traversantes expos\u00e9es.<\/li>\r\n\r\n\r\n\r\n
  • Avantages<\/strong>:\r\n
      \r\n
    • D\u00e9bit \u00e9lev\u00e9, id\u00e9al pour la production de masse.<\/li>\r\n\r\n\r\n\r\n
    • Rentable pour les cartes comportant de nombreux composants \u00e0 trous traversants.<\/li>\r\n\r\n\r\n\r\n
    • Des articulations fiables lorsqu'elles sont correctement contr\u00f4l\u00e9es.<\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n
    • Limites<\/strong>:\r\n
        \r\n
      • Expose toute la face inf\u00e9rieure de la carte \u00e0 la chaleur.<\/li>\r\n\r\n\r\n\r\n
      • Moins adapt\u00e9 aux assemblages mixtes avec des composants SMT sensibles.<\/li>\r\n\r\n\r\n\r\n
      • Flexibilit\u00e9 limit\u00e9e - chaque broche en contact avec l'onde est soud\u00e9e.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
        \r\n
        \"Soudure
        Soudure \u00e0 la vague<\/figcaption><\/figure>\r\n
        <\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n

        Soudure s\u00e9lective<\/h2>\r\n\r\n\r\n\r\n
          \r\n
        • Processus<\/strong>: Utilise des buses de pr\u00e9cision ou des mini-ondes pour souder uniquement les zones d\u00e9sign\u00e9es du circuit imprim\u00e9. Cela permet un brasage cibl\u00e9 sans affecter les composants environnants.<\/li>\r\n\r\n\r\n\r\n
        • Avantages<\/strong>:\r\n
            \r\n
          • Prot\u00e8ge les composants SMT sensibles \u00e0 la chaleur.<\/li>\r\n\r\n\r\n\r\n
          • Grande flexibilit\u00e9 - seuls des joints sp\u00e9cifiques sont soud\u00e9s.<\/li>\r\n\r\n\r\n\r\n
          • Convient aux cartes complexes \u00e0 technologies mixtes.<\/li>\r\n<\/ul>\r\n<\/li>\r\n\r\n\r\n\r\n
          • Limites<\/strong>:\r\n
              \r\n
            • Temps de cycle plus lent que le brasage \u00e0 la vague.<\/li>\r\n\r\n\r\n\r\n
            • Co\u00fbts d'\u00e9quipement et d'installation plus \u00e9lev\u00e9s.<\/li>\r\n\r\n\r\n\r\n
            • N\u00e9cessite une programmation et un contr\u00f4le des processus minutieux.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
              \r\n
              \"Soudure
              Soudure s\u00e9lective<\/figcaption><\/figure>\r\n<\/figure>\r\n\r\n\r\n\r\n

              Tableau de comparaison<\/h2>\r\n\r\n\r\n\r\n
              \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
              Aspect<\/th>\r\nSoudure \u00e0 la vague<\/strong><\/th>\r\nSoudure s\u00e9lective<\/strong><\/th>\r\n<\/tr>\r\n<\/thead>\r\n
              Processus<\/td>\r\nImmersion de l'ensemble de la carte<\/td>\r\nBrasage localis\u00e9<\/td>\r\n<\/tr>\r\n
              Vitesse<\/td>\r\nTr\u00e8s \u00e9lev\u00e9<\/td>\r\nMod\u00e9r\u00e9<\/td>\r\n<\/tr>\r\n
              Meilleur pour<\/td>\r\nCartes THT simples et de grand volume<\/td>\r\nCartes complexes, mixtes SMT + THT<\/td>\r\n<\/tr>\r\n
              Impact de la chaleur<\/td>\r\n\u00c9lev\u00e9e, affecte tous les composants<\/td>\r\nFaible, cibl\u00e9<\/td>\r\n<\/tr>\r\n
              Rentabilit\u00e9<\/td>\r\nExcellent pour la production de masse<\/td>\r\nMeilleur pour les assemblages sp\u00e9cialis\u00e9s<\/td>\r\n<\/tr>\r\n
              Flexibilit\u00e9<\/td>\r\nLimit\u00e9e<\/td>\r\nHaut<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n

              Applications<\/h2>\r\n\r\n\r\n\r\n
                \r\n
              • Soudure \u00e0 la vague<\/strong>: Electronique grand public, blocs d'alimentation et produits comportant principalement des composants \u00e0 trous traversants.<\/li>\r\n\r\n\r\n\r\n
              • Brasage s\u00e9lectif<\/strong>: \u00c9lectronique automobile, dispositifs m\u00e9dicaux et cartes industrielles o\u00f9 la fiabilit\u00e9 et l'assemblage mixte sont essentiels.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n

                Conclusion<\/h2>\r\n\r\n\r\n\r\n

                Choisir entre soudure \u00e0 la vague<\/strong> et brasage s\u00e9lectif<\/strong> d\u00e9pend du volume de production, de la complexit\u00e9 de la carte et de la sensibilit\u00e9 des composants. Le brasage \u00e0 la vague reste la solution de choix pour les gros volumes et les productions sensibles aux co\u00fbts, tandis que le brasage s\u00e9lectif offre pr\u00e9cision et flexibilit\u00e9 pour les conceptions avanc\u00e9es. Dans les circuits imprim\u00e9s modernes, de nombreux fabricants utilisent les deux techniques de mani\u00e8re strat\u00e9gique afin d'\u00e9quilibrer l'efficacit\u00e9 et la fiabilit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"

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