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bigben2k · 04-14-2003, 02:31 PM

...coming back to haunt you, BOO!

Ok, I recently found out that AMD specs actually call for a clamping force of 12 to 24 lbs, with 18 being typical, but that AMD specifically states that 30 lb is permissible, if one uses the 6 socket tabs (aren't you relieved?).

So I came across this interesting article, a nice chart (p. 3) that describes the thermal property of the TIM joint of a TO-220 IC package (don't ask me why I looked that up, OK?), and graphs it as a function of clamping force.

The conclusion is that 20N (Newtons) is the minimum required force to properly mount a TO-220. If my calc are correct, that's 44 lbs

04-14-2003, 02:31 PM	#1
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	CPU clamping force ...coming back to haunt you, BOO! Ok, I recently found out that AMD specs actually call for a clamping force of 12 to 24 lbs, with 18 being typical, but that AMD specifically states that 30 lb is permissible, if one uses the 6 socket tabs (aren't you relieved?). So I came across this interesting article, a nice chart (p. 3) that describes the thermal property of the TIM joint of a TO-220 IC package (don't ask me why I looked that up, OK?), and graphs it as a function of clamping force. The conclusion is that 20N (Newtons) is the minimum required force to properly mount a TO-220. If my calc are correct, that's 44 lbs __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101