Sheet Metal Cooling Fin Structure
Original Publication Date: 1980-Oct-01
Included in the Prior Art Database: 2005-Feb-13
This fin structure is constructed of stamped sheet metal parts, i.e., a first part 10 provided with a bent portion 12 for attaching to a cap or heat sink, slots 14 that interact with transverse elements 16, and air slots 18. Elements 16, which are positioned transverse to elements 10, are provided with slots 19 that interact with elements 10. The fin assembly can be attached to the top plate of a cold plate or a cap of a semiconductor device package by securing the tabs 12 by welding, brazing, soldering or the like. In operation, air forced into the fin assembly in the direction of arrows 20 is channelled transverse to the original direction as indicated by arrows 21 and 22, through slots 18, and openings 23, providing a more efficient heat transfer. The construction of stamped fins is relatively inexpensive.