BlueSwordM LED Group Buy 3: a 3V 5050 domeless Ra9070 4000-4500k LED, the perfect XM-L2/SST-40 (UPDATE 2: Something new!)

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mattlward
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Put .e in for 10 in the US.

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

Cheule
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I’m in for 20.

If the sample shows positive results, I’ll increase to 40.

My zombie apocalypse trio: TorchLAB BOSS 35, Acebeam L19 green and MK38.
My current edc: Hanko gunner twist 519A sm455 de-dome 3400K CCT

Bob_McBob
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I’ll take 50 if fogofwar is able to confirm low CRI samples look good in common optics and OP reflectors.

BlueSwordM
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You’ve all been added Big Smile

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pc_light
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pc_light wrote:
5 3V for me.
@BlueSwordM, update me from 5 to 10 please. Doing what I can to make it happen.

Plus FOMO because I ordered 1/2 of what I ended up needing of the initial release of the DA0GF4RTS6’s and AZHU’s 219B D220 SW45K’s.

On the light side.

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Done.

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Lick
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Would like to see beamshots of this first but I am interested. 

Chatika vas Paus
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I’ll try 10pcs

BlueSwordM
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Interesting update

Interesting new information for you my friends.

I’ve actually found another manufacturer making a high CRI 5050 3V LED!!!!!!

Even better from Rayten in some ways: single emitter die(so it should have higher intensity and no cross-die), Ra9580 (not a “puny” R9070) and a nicely lower VF for better regulation Big Smile

The only downside? Much higher thermal resistance(5C/W instead of 2C/W) and a bit lower efficiency.

My very own high current Beryllium Copper springs Gen 3:
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Cheule
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Is it domed? Or domeless? (The new option that is a single die).

My zombie apocalypse trio: TorchLAB BOSS 35, Acebeam L19 green and MK38.
My current edc: Hanko gunner twist 519A sm455 de-dome 3400K CCT

BlueSwordM
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Domeless obviously Big Smile

I wouldn’t even bother if it was domed due to tint shift Smile

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http://budgetlightforum.com/node/67401
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Cheule
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It sounds good. I’m not worried about efficiency all that much with a 5050 size.

My zombie apocalypse trio: TorchLAB BOSS 35, Acebeam L19 green and MK38.
My current edc: Hanko gunner twist 519A sm455 de-dome 3400K CCT

BlueSwordM
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Ye. Most interesting thing though is that if I believe the manufacturer’s datasheet, it’s got a decent bit lower Vf than the Rayten LED.

Now, it’s no 2022 XM-L2, but it’s still a very nice development.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
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BlueSwordM
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Here’s the datasheet in question:
https://drive.google.com/file/d/1_Sxs98nCJsLdIyrKIvLgftYnkpOerEw7/view?u...

Now, I don’t want to be judgemental, but these graphs seem a bit… odd. Almost seems like they got it from somewhere else.

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thefreeman
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The link doesn’t work.

5C°/W is not very good, especially for a 5050 LED, that’s 219C level of thermal resistance (4.2~6.4), first gen XM-L2 is 2.5, new gen 0.75, SST-40 : 0.8

BlueSwordM
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Yeah, that’s what I figured as well.

Here’s a fixed link:
https://drive.google.com/file/d/1_Sxs98nCJsLdIyrKIvLgftYnkpOerEw7/view?u...

I just wanted to know you guys’ opinion.

Man, I just wish Luminus had released a high CRI SFT-40 honestly. Imagine how much time we could have saved Silly

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Correllux
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Datasheet does look a little suspect but if any of that is to be believed then these look like fragile dim emitters. 900 lumens at 3amps on a 5050? Reflow info doesn’t make them seem very robust…maybe the info taken altogether suggests that they wouldn’t be very good in a flashlight host where things are cramped and hot.

Still waiting to hear back again from my Luminus fellow on whether high CRI and/or lower temps are in the cards for those emitters but if so we’re looking at probably more than a year away. (I wonder if, say, Hank and Simon and Sofirn were to get together and request several reels if Luminus would make a special run…..the dream team collaboration. lol)

BlueSwordM
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To be fair, the LES seems to be quite small. I wonder how small it really is, which is one of the questions I asked.

I was going to be happy until I saw the thermal resistance specification.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
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mattlward
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I would be concerned with a low Vf and high thermal resistance, sounds like it would be easy to drive to death!

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

Bob_McBob
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Correllux wrote:
(I wonder if, say, Hank and Simon and Sofirn were to get together and request several reels if Luminus would make a special run…..the dream team collaboration. lol)

My impression is with companies like Nichia and Luminus you have to be regularly ordering hundreds of thousands of high power LEDs before any kind of customization would be on the table. Nichia won’t even sell their low yield special chromaticity bins to regular customers ordering in the tens of thousands.

BlueSwordM
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@bob_mc_Bob, not hundreds of thousands.

MILLIONS.

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Correllux
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Well then, these big emitter companies have just gotten a bit to big for their britches, haven’t they. Smile

I’m not in for a million…much as I might like to.

BlueSwordM
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Anyway, some color information about the other LED:

Man, it’d be so nice if it had lower thermal resistance :/

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
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BlueSwordM
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Some more pictures:

Currently in the process of getting a close up picture of the whole LED so we can estimate the LES.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

id30209
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BlueSwordM wrote:
Some more pictures: !{width:40%}https://i.postimg.cc/tCk4hPMX/LED-5050-95-CRI.jpg! Currently in the process of getting a close up picture of the whole LED so we can estimate the LES.
 

 

Dude...!

WTB Titanium 4sevens 2xAA tube

Hoop
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It’s not a very high res picture, but measuring it in CAD shows between 1.35mm sq and 1.8mm sq, depending on whether it is measured from the fuzzy part of the outline of the phosphor or the more solid part.

BlueSwordM
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Slurp

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Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
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The manufacturer and our contact is really dedicated, god damn Smile

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

thefreeman
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They don’t know the LES of their own LED so you have to ask high res pictures to estimate it ? Lol

I got this using webplotdigitizer : 1.53×1.17 = 1.79mm2

SST-20 is 2mm2 I think ? so it’s quite similar, no dome, but probably lower current handling as SST-20 thermal resistance is 1.6C/W

BlueSwordM
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That’s something that’s really strange about a lot of manufacturers that I’ve dealt with outside of Getiand and Rayten.
LES stuff doesn’t seem to be something they put in the datasheets lmao.

How come they can’t give me every detail possible about the physical parameters of the LED?

Anyway, with the amount of money I would need to invest to and the rather high thermal resistance, I’m not sure we should go with this LED, even though it looks a lot more… interesting than the Rayten LED.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

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