Clemence has expressed doubts about the ability of a single E21a to handle the power of the 2019 RRT-01.
Since I like to live dangerously, I just put a 3500k E21a into a comparatively lower powered V11r.. I like the LED very much… I got mine reflowed onto a 10mm board by Clemence, so all I had to do was solder in the star.
you will need to make a decision about what color temperature you are in the mood for
unless you know you like warm, I suggest you go with something cooler… like a 4500k
… I suspect Clemence knows what hes talking about, the E21a LED may not be the right choice.
some people like the SST-20
others like the LH351d.
both are brighter and less pink than the 219b and E21a nichias…
(I avoid the 219c, its brighter but for a snob like me, “too” green…
however, moderator007 is a wizard when it comes to sourcing parts… and when he talks, I take notes)
Im still in my Pink sw45k N219b phase…