I am looking for references for calculation the solder joint life for a Hybrid (600 ctr, dip) with a copper spreader between the Hybrid and the pwb. Bill Gaines AeroJet (for $) IHPVA (for speed & fun) IEPS (for info) SCCA (for trophys) [log in to unmask] =================================================== /| _ _ _ /_||_ |_ | / ||_ _| |_ =================================================== 1100 Hollyvale MS:8711 160-2B8 Azusa, Calif. 91702-0298 818-812-2199