19mm is not a common size. Itâs better I custom make it from VR20SP3, there should enough margin to do that.
No plan for VR20S1, after this VR20SP3, the next MCPCB will be VR38SP16,
Tip: You can convert existing VR21SP4 to single E21A use by scraping the solder mask.
If one wants lumens he shouldnât buy a E21A custom in the first place. The D240 looks very natural in the higher modes but thatâs it, in the lower and low-medium modes the tint is bad and unacceptable, 15% more output doesnât make than any less of an issue. Even the 80CRI XPL-HI 5D with a slightly rosy duv of about â0,0020 makes the D240 E21A look green at about any level.
I agree with you, I like my 4xE21A 4000k D220 Tiara Pro more than my 4xE21A 4000k D240 Tiara Pro. The D220 version looks nearly identical in tint to the 219B 4000k 9080 that Clemence was selling.
Guess Iâll wait a while till Clemence restocks the D220 bin.
Is your D220 4000K (and 4500K?) Tiara below the BBL on all levels?
Interesting you have two identical lights with a different flux bin
I donât have the equipment to measure but my Tiara with D220 4000k looks a bit below BBL at very low output and goes down to very nice rosy tint at high output much like the Cree 5A/5D tint. The D240 doesnât look bad by any means. It is nowhere near as green as the 219C 4000k 90CRI, LH351D 4000k 90CRI, or SST-20-W 95CRI FB4 tint. Just not as nice as the E21A 4000k D220 or 219B 4000k 9080 tint that Clemence was selling.
This apply not only to Nichia. Almost all LEDs with top bin at their particular category tend to be greener than their lower bin counterparts. Maukka also confirm this. Higher flux bin = more chance to land on green zone.
Light flux measuring devices adjusted to human eyes sensitivity. Our eyes sensitivity peaks approximately in the green zone.
Fortunately, E21A gets more rosy as the current goes up. D240K 4000K has mild greeness at very low current (< 50mA). Makes it unsuitable for pink tit snob who often use it at sublumen level.
With this findings, I will only place any order a step below max flux bin for green free measures.
For example: max flux bin for 5000K - 6500K is D260, I ordered D240 for these CCTs.