【convoy】H4 and B35AM options are updated

Great thank you. Are the new 3X21A flat top adapters (molding not CNC-made) ready for shipping yet? I would like to order two more flat top adapters each for 4X18A and 3X21A along with my next order (S16 with SFT40).

How do you think about FC40 in S16? If it works in S11 I feel confident it would work very nicely in S16, too. :)

26800 tube

Thanks Simon they look great

yes ,new adapter now ,
i dont have reflector for S16 FC40 ,
M21B FC40 will available in two days

Great. I will wait for M21B FC40 to become available and then get back to you via PM.

You got me, I just ordered 5 of them 26800 extensions. Those 26mm PCB board for series connection, please consider 21mm and 18mm sizes.

ok,i will produce some

when to expect 26800 extensions for S11?

So i’ve got Nichia B35AM 5000K R9080 and installed iz in S21B.

AMAZING BEAM!

But it get’s realy hot on 100% so i’ll go with 3A driver instead of 4A (22mm single cell boost)

Best high CRI emitter right there. I did a quick color test of a 3500k B35A, good tint, great beam uniformity, great color rendering with very slightly oversaturated reds (good).

Simon could you look into sourcing it ? You already have several boost drivers (6V) suitable for it, the only downside of this LED is the footprint as it doesn’t have a neutral thermal pad, it requires a new MCPCB and the dielectric thermal conductivity/thickness plays a big role in the MCPCB’s performance.

edit : Actually you already have an MCPCB compatible with it : 16mm copper MCPCB for nichia 276A
Both use the same land patern :
B35AM datasheet
276A datacheeet

Awesome test the freeman.

Although Convoy is using thick AR coated lenses, this emitter just stayed at BBL and with ton of lumens.

Yeah i think those Nichia 276 MCPCB are good for it!

Thanks

Yes it would also be great if Simon could source lenses with better AR coating, current Convoy lenses have relatively strong purple reflections due to the AR coating, making the beam more green. Mauka tested this here with the L6 FC-40 , this is in line with my measurements of several Convoy lenses (duv + 0.002~+0.003).
(Different grades of) multilayer AR coating lenses have a lower effect on tint and also a slightly better light transmission, satisfying both tint and performance.
Some coatings can also have a different dominant reflected color, such as green which would then improve the tint (less green), even better. Djozz showed an example here
If sourcing better AR lenses is difficult (with cost considerations), a plain lens doesn’t modify the tint (as long as it’s good quality glass, not the kind that looks green when looking at its edge) and could be an option for customers who favor tint over performance.

Oh yeah. Plain lenses is what i’m looking for for some time now.

That purple AR coating simply makes beam awfull. Clear lens is better until i find those green coated.

I’ve polished the AR coating off of several lights with a Sunshine Cloth. It took maybe 45 minutes per lens to get both sides done.

I’ve read about that method but i’m just too lazy…

Left Zebralight SC600MkIV+ XHP50.2 4500K 80CRI

Right S21B Nichia B35AM

it can not be soldered on DTP board.
i worry about the heat….

[quote=Simon Mao]

See more details here

https://budgetlightforum.com/t/-/66345

Yeah but I don’t doubt Clemence when he said it’s the most expensive MCPCB he ever got made, very thin high conductivity dielectric and 3oz copper pour.

That said it doesn’t need to be driven at 4A, I’m guessing that limiting to 2~2.5A (2.4A max pulse rated current) is probably going to be OK on a normal MCPCB.

I could get some of the Convoy 276A MCPCBs with my next order and test if I find the time.

Good catch!

I might try the same.