How much current is needed to drive a triple Nichia 219B on noctigon and get the most out of them? Will 4.8A in parallel be enough?
'Enough'? What's that word mean? ;)
I measure 7.0A on my 3x 219B Roche F6, that's with a normal pass-through ammeter so the actual is likely a good bit higher than that. They survive just fine like that as long as they're on copper.
I tested the 219B a while ago: https://budgetlightforum.com/t/-/23869
'the most out of them' for me personally is 80% of maximum output, for the 219B that is at ~2.5A , so three of them is 7.5A, if you have that available ;-)