Thermal interface material and solder preforms

H - Electricity – 01 – L

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H01L 23/48 (2006.01)

Patent

CA 2547358

A solder preform (5,12) having multiple layers including a solder layer filled with additives interposed between two unfilled layers for improved wettability. A solder preform having a sphere which contains a solder material filled with additives, and an unfilled surface layer for improved wettability. Among the fillers are CTE modifying components and/or a thermal conductivity enhancement components.

L'invention porte sur une préforme à braser (5,12) présentant plusieurs couches comprenant une couche à braser chargée d'additifs placés entre deux couches non chargées afin d'obtenir une meilleure mouillabilité. L'invention porte également sur une autre préforme à braser présentant une sphère qui contient un matériau de brasage chargé d'additifs, et une couche superficielle non chargée en vue d'obtenir une meilleure mouillabilité. Parmi les charges de remplissage, on a des composant modifiant CTE et/ou des composants améliorant la conductivité thermique.

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