DBSAR
(DBSAR)
24
I know of that Imalent had a batch of bad XHP-70s from Cree that they ended up with that ended up failing parts of the dies, (2 of the four) I think that if these “bad” batch of emitters were pushed to hard & to hot they would fail/failed. ( maybe even “unflowed” themselves from the board under the extreme heat) like when i built the 14 + amp Super SRK Kung i have, i pushed it so hard to the point that one of the X-L2 emitters got so hot it un-soldered itself from the star & fell into the reflector after 50 seconds of running.