OK great, thanks again for the great info/fast response! Out customer really does not want a redesign...which is why I was going to do some analysis on the 6002 part. But yes, if indeed this old card's design parameters lock us into the 100W04 part...

OK thank you, I did find the STTH6002CPI that might work for me. I see it's "active" is that part going obsolete? I will also check out the STTH100W04C as well.