| 摘要 |
An air cooled heat sink 10 comprises a high aspect ratio single sheet folded into fins 12 with a base plate 16 and a top plate 18 attached to opposing sides of the fins. The folded sheet, base plate and top plate are preferably copper and they are preferably attached together by brazing. The provision of the top plate stabilises the fins which have a tendency to bend. Channels formed between the fins preferable have an aspect ratio greater than or equal to twenty. The heat sink may be attached to a substrate by any known means, possibly using the attachment holes 20, 22 and 24. |
