One thing you can do is drill holes and use small eyelets for via's.
The only problem is the part will not sit flat on the board.
--- In
Homebrew_PCBs@yahoogroups.com, "Dave Miller" <dmiller45@...>
wrote:
>
> I have a question to the other members in the group.
>
> I use alot of SMD parts, many of which have heat slugs on the
bottom of
> the parts for thermal dissapation. At work, when I have a PCB made
up
> by a board house, we lay these out with a large solderable pad
under
> the part, then connect the top side of the PCB to the bottom side
with
> numerous feed thru holes. When the part is soldered to the board
this
> provides a themal path to the copper on the botom of the board.
With my
> home made TT, or photo boards I can not make plated thru holes to
> provide this thermal path, but I still need to get the heat out
some
> how.
>
> I have thought of drilling many feed thru's under the part and
feeding
> a thick copper wire from one side to the other, then on the
compnent
> side cut or grind the surface flat so the component can still be
> soldered down.
>
> Has any one else had to use similar parts? How have you managed to
get
> the heat out of these parts? Any other suggestions?
>