In the Seoul High Power Catalogue I noticed the next generation 3535 LED from Seoul. It’s not featured on the Seoul website, I don’t see any mentions anywhere on the net yet so the picture above is literally everything I know about it.
And it shows a bit higher output than Samsung LH351D with slightly higher voltage. Max forward current is lower which may be a hint of inferior thermal resistance.
May be a good LED.
I like the looks of the Y22P actually, nice large single die, and availalable in all CRI’s
I remember looking at it some time ago. And if my memory serves me well it failed to outperform a single E21A.
But it is much easier to handle and apply in a flashlight because the usual centering procedure with common plastic center pieces can be followed. It is hard to beat the XP-L Hi in performance (but tint is bad) and the E21A in tint (but the package is bad), but this is somewhere in between, if the high CRI tint is any good I find it interesting.