At best, I can only complete the payment to Nichia in 180622 or 180625. It’s a long holiday here. The last time I was about to complete it, Nichia couldn’t process my order because the Optisolises were out of stock. Now when they’re back, there’s this holiday.
- Almost invisible (from afar and when lit) yellow marking for enhanced aesthetic
Special solder footprint dimensions for precise LED positioning. Very easy to solder with DIY techniques. No more overflow solder - bumps which can impede optic placement.
NOTE: Ignore those erroneous guide boxes, they won’t affect the board/soldering performance. The LEDs self align perfectly.
This board is sure overkill for 757 LED family, the board thermal resistance is much lower than the LED thermal resistance itself. But with some scrapings here and there this board can be used for other high power (2 pads) LEDs as well.
NF2L757GT-F1 sm273 P9 Rfh00
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. VR21SP4 (larger version of VR16SP4)
New features:
- The closest performance to DTP copper MCPCB
- 1 Oz. copper
- Tighter LEDs spacings at 0,3mm
- Smooth backside
- 2,5mm holes can be tapped for M3x0,5 screws for alternate mounting options with thin heat sink plate.
- Diameter = 21mm
- Thickness = 2mm
Almost invisible (from afar and when lit) yellow marking for enhanced aesthetic
A quick test with VR21SP4: good news, with proper optics it can be used as a thrower. Not as throwy but decent at 8 - 10 degree hot spot (estimated).
Tested with Armytek Viking OP reflector, 37mm, and 45mm colour mixing TIR optics. Will post the beamshots if I have the time between soldering the 219B GB orders.
I will put mine in the Convoy L6 (medium to large size OP reflector) and will report back how that works. Iight convert the light to use the new Gaggaione 67mm silicone TIR optics.
The optics used were 45mm Gaggione LLC49R and Yajiamei 37mm. The reflector was from newest Armytek Viking. All resulted in good beams, little to no artefacts.
E21A on VR21SP4 can’t be driven as hard as the VR16SP4 because of the smaller gaps. 2A/LED seems near the limit for R9080 and 2,5A/LED for R70.
Finally had a little time for quick testing the VR21SP4 with some optics I laying around.
4x E21A sm403 D220 R9080
The contestant:
So, quadtrix E21A boards (VR16SP4 & VR21SP4) are not that hopeless for medium range thrower. To get rid off the center cross there are several options:
- Add diffuser or diffuse the optics used (including texturized the reflector when possible)
- Use colour mixing optics (OP reflector, special TIR with multi facet/pebbled surface)
Quad config is not as good as quadtrix config for colour mixing. I prepared all these boards for the CCT switching lights and for the upcoming colour E17A (I hope E21A as well).
NOTE:
Actual stock Carclo 10622 beam was so much uglier with blue hot spot. While on the other hand the frosted 10622 (yes I frosted it myself) was so much better with no red band at all. My camera limited dynamic range can’t reproduce the actual looks.