KC1 keychain light is available now

I'm liking the results of the YINDING 5050 5000K round die so far: https://budgetlightforum.com/t/-/68542/43

De-lensed it's doing better in throw, and better in lumens. De-lens, it seems to be doing as good as a Boost HX (W2) but cheaper, and using a standard 5050 footprint.

So I checked the Nichia datasheet. B35AM is 0.73mm tall. The CREE XPP is 0.75mm, NM1 and PM1 measured 0.80mm, SFT40 was 1.10mm. The round 5050 yinding came in at 0.68mm. Haven’t measured the Cree HIs but datasheet says 1.0mm.

Is your SFS80 in a Nightwatch, Mateminco, or something else?

I have a Mateminco MT35 Mini-S with SFS80 that pulls 7.2A and does 115kcd from a 43mm head (a bit smaller than a C8) and 2100 lumens from my measurements. The beam is immaculate. It also has a lower color temperature and a slightly rosy tint.

On the other hand, I have four SFT40s in one light and three of them developed black spots. The total lumen output from all four is only 7600.

The E21A tint ramping version is up,
https://intl-outdoor.com/tint-ramping-instant-channel-swiching-led-flashlights.html

I have sfs80 in mt35 mini also. The beam is cool white, mine is not at all rosy, mostly very cool but somewhat "neutral", meaning not green. The beam also was horribly centered from the stock light, I had to recenter using a new centering ring which made it better but not perfect. I haven't measure throw yet but I'd be surprised if it was getting over 100kcd... it seems like another LED that is very sensitive to reflector height, like sft40. That stock Mateminco centering ring in mine is trash.

lumens seem higher than the sft40 though, just from a visual inspection- there is more spill to the sfs80 beam. That is a positive. I don't Ike the color anymore or less than the sft40. But that is all opinion of course. I have some sft40 that seem greener than others.

I don't doubt that 4 sft40 is only putting out 7600 lumens (1900lm each led) in a multi emitter setup, according to Djozz's testing that would mean that your light would need to be getting over 5.5amps to each of the emitters, over 22amps total. There are too many factors at play to effectively compare one led being better than another based on how one performs in a single emitter light vs the other in a multi emitter light. According to djozzs bench test the sft40 would be pulling 2300lm at 7.5a if in our mt35 mini's. But your 4x emitter light would need to be pulling 30amps+ for that to happen.. not a small feat.

Anyway, their performances are close at best. But the beam of the sft40 I have found to be better for throwing (tighter beam, more pronounced hotspot, generally speaking). But I do not have enough sample of sfs80 to completely verify that. I have 7 lights with sft40 and 1 light with sfs80.

Edit- the black spot occurrence - I've had it happen twice out of installing around a dozen sft40 in about 15 lights. I have seen others with it too. It is terribly disappointing. Someone I had given a sft40 to had black spots when they received it, which means I was the culprit. We both agreed it was more than likely soldernsplatter, something I was not terribly concerned about avoiding before working with the sft40. So, your right that the "ease of install" is diminished with the sft40..

I agree that they are similar which is still pretty impressive for the unknown Chinese manufacturer. The SFS80 is possibly more inconsistent than the SFT40 given some the anecdotal evidence on this site. Although both are not great.

It’s too bad that your SFS80 was poorly centered. Overall, I like the MT35 Mini-S more than I thought I would. I was pleasantly surprised on the lumen output because I thought it would be closer to an Osram W2.

The sfs80 is 263% the size of the w2 and 132% that of the sft40. I think some might be missing the point of how large this emitter is and that north of 3300 lumens would be needed to match the sft40 at max output and nearly 4200lm to match a w2 in intensity. Short of some voodoo magic - or a terribly nonhomogeneous brightness across the die surface - there is no way it competes in the throw realm with these emitters at max output. I could believe /expect that in the 3-5A range though it will put out more lemons than the sft by a meaningful margin.

How much current does the E21A tint ramping diver deliver? Is it 2.5A on each of the channels?

DM11 Prototype!

That is pretty! Is that a photo from Hank, or do you have the prototype in your possession? If it’s in your posession, what emitter is it? How’s the knurling?

It’s in my posession. This light has a B35AM in 5000K. The knurling is definitely pretty aggressive, I think it might be a bit too abrasive for pocket carry. There was a pocket clip included with the light, it’s a new design.

Hank says this is 99% identical to the production verison, I don’t know what has or hasn’t changed. This light actually has a Noctigon branded tailcap.

Aux leds?

How is the tint?

Is it deep carry? Is it a "captured" style clip (like kr4 clip) or a "snap" on style clip (Like d4v2 clip)?

What a tease!
Does this mean you will release a video review soon? :slight_smile:

It’s been released check the first page for link!

Hank: Can we choose the color of the switch leds?

Hank, do you offer Osram Red for D4V2 or D4SV2?

That's what I wanted to ask...

Yes, we do have it, please order the Osram W2 LED on the site, and let us know the order number,
we will send as request.

My mistake, just added the options.

Ordered DM11 grey/green switch with B35AM 4500K, very excited. Thank you Hank.