On Fri, 17 Oct 2008 19:08:49 +0100, Eeyore
wrote:



JP wrote:

Does anybody know what the normal operating temperature of the
darlingtons is?

It's not that simple. It depends on the dissipation and thermal resistance.

The *junction* or die temperature may be as high as 150C in plastic devices or 200C
in metal can and still be reliable but that's NOT the heatsink temp.

Google Motorola AN1040 (that's twice this week now I've mentioned that) !

Graham


Not my post but okay....