Thanks. My criteria for noticeably warm and
uncomfortably
warm (for an LED) was about <5degF and <20degF
respectively. I know you can get more, heat, but that always
seemed to not be the thing to do with LED's.
You might be able to find more info at the Virtual LED Museum:
http://ledmuseum.home.att.net/ledleft.htm
Stan Sieler sieler(a)allegro.com
www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler