Heat sink and method of fabricating same

H - Electricity – 05 – K

Patent

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Details

H05K 7/20 (2006.01) B23P 15/26 (2006.01) H01L 21/00 (2006.01) H01L 23/36 (2006.01) H01L 23/367 (2006.01) H01L 23/373 (2006.01)

Patent

CA 2325799

A method is described for fabricating a heat sink from a blank comprising a base plate portion and a fin -forming portion. In a heat sink (1) having a plurality of fins (3) and fabricated from a blank (11) comprising a base plate portion (12), and a fin-forming portion (13) to be cut and provided on at least one side of the base plate portion (12) by cutting the fin-forming portion (13) to a raised form to make the fins (3), the above object can be fulfilled by using as the heat sink blank (11) an aluminum or aluminum alloy extrudate having a Vickers hardness of 40 to 65.

Une description d'une méthode de fabrication d'un dissipateur thermique à partir d'un flan comprenant une partie de plaque de base et une partie de formage d'ailettes. Dans un dissipateur thermique (1) muni de plusieurs ailettes (3) et fabriqué à partir d'un flan (11) comprenant une partie de plaque de base (12), et une partie de formage d'ailettes (13) à découper et fournies sur au moins un côté de la partie de plaque de base (12) en découpant la partie de formage d'ailettes (13) en une forme élevée pour fabriquer les ailettes (3), l'objet susmentionné peut être utilisé en utilisant comme flan du dissipateur thermique (11), un extrudat en aluminium ou en alliage d'aluminium ayant une dureté Vickers entre 40 et 65.

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