Samsung LH351D color testing

[maukka]

@djozz

Thanks for the test, indeed 1200 lumen at 4A is really good.
Strange things sometimes happen with led tests. I have done tests on the XHP70.2 that have a maximum at much lower current than TA and Koef3, I blamed that on for my (for that immense power) insufficiently cooled ledmount, but it could have been something else too, I never really found out. Perhaps in your case the thicker phosfor layer which also has a different composition is to blame.

CRI70 version of the LH351D topped off at about 6 amps with two different heatsinks and fans. The heatsink shouldn’t be to blame since I also tested an XP-L2 CRI70 and it went nicely all the way up to 10A with more output and better efficacy than in TA’s test. No idea about the binning of my sample since it came from Kaidomain. Could also be the nondescript MCPCB I used for the Samsungs. Kaidomain Cu DTP for the XP-L2.