On Tue, 10 Feb 2004 23:22:06 -0000, Alexander JJ Rice wrote: Vishay rate their 805 SMT thick film devices for an overload of > 1A > for 5 seconds. That is 5 Joules. woops, silly me. E=I^2 * RT and it is 0.5 seconds, not 5 seconds so : 1^2 * 3.9 * 0.5 = 1.8J Alex R -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu