Luminus SST-40, a N4 BA bin tested

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Mitko
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Those are the same stores BLF fellas, i know OT LED rom the time when they started, at first ( the store owner is called Amanda) they provided me even with the exact bin, but then they business expanded and they started selling fakes, factory reject and bad binned emitters, youll never find anything good in there now

Typical corporate illness, callled more profit and greed: thats the main reasos we have those random global econ crysis if you ask me, too much greed

You know, there was a time when this store have found 1304 Cree chips with the impossible bin and 96 CRI, and they were great….now, they care only for more profit, not the quality

99% of the buyers dont care the the emitters bin and quality as long as it “shines”

Sellers like RMM and IOS are rare as hell, Mouser for instance dont know exacly that they are selling, i had several quite long chats with their support, and believe or not i do believe that most of BLFers will work ways better than those ppl

Jerommel
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Agro wrote:
Can’t find it on the arrow site. Mitko, could you share the link please?

Can’t find them either.
Maybe Mitko bought them all.
Or he was joking?

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

blueb8llz
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Mitko wrote:
I got some from Arrow too: 7500k the highest bin,

The main difference is: when properly dedomed( its not that easy though, at least those samples) The tint didnt shifed much, like only 1000k or something , thus resulting in the best cool white tint( accoarding to the BLFers), like 6000k 1D or so, paired with an the AR glass even i like it.

I tried keeping it at about 7, 7.5 amps tops, to awoid burn-outs

Paied with a good fed dd driver it resulted at arround 2050-2080 lumens( at 7 amps) WHEN DEDOMED, measured with my spectrometer, candelas ( in most knows hosts) are as follows
C8 – 162000
X6 – 108000
L2 – 315000
B158 – 269000

I`ve modded a M3x torch with it too, using a boosted default driver at 7.1amps and it ended at 335k candelas

A very good emitter, especialy if you aint at a good cool white tint after dedoming, simmilar or even an idea better than W2-W3

Thanks for this. Wait, so does a dedomed sst40 throw very similar to a dedomed xpg2? I would t think it would, but looking at your numbers on those host,especially the c8, it seems like a xpg2 would give similar results. I think I remember seeing you get like 175 kcd on a c8.

Sirius9
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LightRider wrote:
Sirius9 wrote:
I reflowed 3 pcs (from ali seller) yesterday, dedoming them later today…

Did you buy from:

Or
Shenzhen Great Technology Co.,Ltd.

Bought them here, they look ok to me, nothing to indicate they are fake!
They look exactly like in djozz first post:

They are CW for sure (which is ok for me because I need them to have best throw they can and NW or WW
doesn’t throw as good as CW) but there is no seller on aliexpress that will provide more precise informations.
I would be very happy if I could buy from Mouser or MTN (all those nice drivers :/) but I just can’t afford
paying 60$-70$ for 10 leds + 20-30$ for shipping Sad

 

giorgoskok
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These aliexpress leds’ specs are :

Flux : N4
Color : BA
Voltage: VK

Henk4U2
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As stated before, I ordered from Shenzhen Great Technology Co.,Ltd. All came with bubbles. Some small, some big(ger). So at least some of them should be dedomed. Question was: shaving or solvents. I decided for the first and remembered that TK once mentioned using a washer. The bond wires protruded about 1.5mm in the dome, counting from the star. Of course I had no suitable washer in my box of bits and bobs. What I did have was this (very old and rusty) key to a bicycle lock.

I gave it a tour on my whetstone, and then it looked like this. A nice smooth working surface for my knife.
With a handle. And the 7mm hole almost directly offered a perfect fit for the base of the 5050 LED.
So you put the tool upon the star. The LED sticks out a bit, and presto!

Unfortunately I used the wrong knife. Or the knife wrong. Despite the smooth tool, the surface of the LED looked like a plowed field. Time to execute plan B: using MEK. Two hours later the LED looked like this

The result? I’m not sure what to think of the absolute values on my LX1010B luxmeter, set at 2 meter. I’ll give you the outcome “as is”. They should be treated as relative results. Only comparable within the following list.
Nevertheless a nice outcome for my first dedome of an SST-40.

Convoy C8 with X5/X6-driver. XM-L2 with dome: 102
Convoy C8 with X5/X6-driver. XM-L2 dedomed: 183
Convoy C8 with X5/X6-driver. SST-40 with dome: 112
Convoy C8 with X5/X6-driver. SST-40 dedomed: 194
Convoy C8 with LD-2. SST-40 dedomed: 192

For reference
Olight M2X-UT with dedomed XM-L2. Stock: 290
Thrunite TN32. Stock: 424

Edit: did some tinkering and added a few results. In all cases the SST-40 offers a bit more throw than the XM-L2 U2-1A.

I always think long and hard before I say something really stupid.

KawiBoy1428
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Henk4U2 wrote:
As stated before, I ordered from Shenzhen Great Technology Co.,Ltd. All came with bubbles. Some small, some big(ger). So at least some of them should be dedomed.

The bubble (s) come from re-flowing, got seven of them from Kaidomain and re-flowed as normal, the last 2 sat a little longer and developed a bubble (s) inside, no artifact’s in the beam from them that I can see, but then they are in a triple mmuX3 pulling just over 24amps. (right click then enlarge to see bubbles)

IJOY 21700 and Modified FETDD driver using the Hyperion FET that TomE turned me on too! Thumbs Up

Scary Bright! Steve

KB1428 “Live Life WOT”

Sirius9
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I also dedomed some of this leds and I am not that happy with results, I used heated liquid method that gives me almost perfect results with XPE, XPG, XML and XPL types of leds but SST-40 is tought cookie. In all cases silicone dome did not separate from phosphor surface so cleaning was required and that never gives “perfectly clean emitter surface” results.
So, I am not happy for now.
Click to enlarge…

As you can see, one of them is missing a bit of phosphor and the other one has tiny pieces of silicone that cant be removed without further damage to emitters surface…

 

Sledgestone
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Sirius9 wrote:
I also dedomed some of this leds and I am not that happy with results, I used heated liquid method that gives me almost perfect results with XPE, XPG, XML and XPL types of leds but SST-40 is tought cookie. In all cases silicone dome did not separate from phosphor surface so cleaning was required and that never gives “perfectly clean emitter surface” results. So, I am not happy for now.

Use straight Toluene. Dome comes off in about five minutes in finger warm liquid. Canned air is good to remove silicone leftover. Be careful to heat it though. Tried two times in boiling water and the LED came of with the dome. Also the tint is fantastic!

Left: Sst-40 dedomed in hot nitro thinner.
Right: Sst-40 dedomed in finger warm Toluene.

djozz
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^ Is this the first direct proof that a different dedome method results in different tint? Or is there more than just the dedome method different in the above pictures?

link to djozz tests 

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Sledgestone
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I can’t be 100% sure at this point, but they came from the same reel. In the next two days I’ll try the same thing with another SST-40, XP-L, and XP-G2.

Edit: I’m sure that there’s other members who have found other ways to eliminate the green shit. But I get the feeling that they are very reluctant to share their methods…

Newlumen
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Sledgestone wrote:
I can’t be 100% sure at this point, but they came from the same reel. In the next two days I’ll try the same thing with another SST-40, XP-L, and XP-G2.

Can u test the lumen/lux also? Using the same light with the dedome sst40, xpl, and xpg2?

Sledgestone
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I have no way to measure lumen, but I’ll measure the candela for sure!

AlexGT
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Sledgestone wrote:
Sirius9 wrote:
I also dedomed some of this leds and I am not that happy with results, I used heated liquid method that gives me almost perfect results with XPE, XPG, XML and XPL types of leds but SST-40 is tought cookie. In all cases silicone dome did not separate from phosphor surface so cleaning was required and that never gives “perfectly clean emitter surface” results. So, I am not happy for now.

Use straight Toulene. Dome comes off in about five minutes in finger warm liquid. Canned air is good to remove silicone leftover. Be careful to heat it though. Tried two times in boiling water and the LED came of with the dome. Also the tint is fantastic!

Left: Sst-40 dedomed in hot nitro thinner.
Right: Sst-40 dedomed in finger warm Toulene.

That dedomed tint looks fantastic Sledgestone!

I wonder if this stuff is the same as what you used… This one claims 99.7% pure Toluene
http://www.ebay.com/itm/Toluene-Toluol-500mL-Reagent-ACS-99-7-Solvent-Pa...

Jerommel
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Yeah, that’s the stuff.
500ml is a nice amount, USA seller, shipping to NL would be either impossible or very expensive..

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

Sledgestone
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That should be the same.

Mine is 100% pure though, but that shouldn’t make a difference.

This is available from the UK
https://m.ebay.com/itm/Toluene-Toluol-500ml-99-9-Pure-very-High-quality-...

Newlumen
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Sledgestone wrote:
I have no way to measure lumen, but I’ll measure the candela for sure!

I am very confident sst40 dedome outthrow xpl dedome in both lumen and lux.. I need opinions from you. Thanks.

Sledgestone
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Newlumen wrote:
Sledgestone wrote:
I have no way to measure lumen, but I’ll measure the candela for sure!

I am very confident sst40 dedome outthrow xpl dedome in both lumen and lux.. I need opinions from you. Thanks.

Well the SST-40 will have much more lumen and I think throw should be similar. But the SST-40 will run much hotter at over 8 amps vs the XP-Ls 6 amps.

Jerommel
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Well, whaddayaknow…
http://www.aurelio-online.com/Toluol-analysenrein-C7H8-mind-995-1-Liter-...
€19.48 shipped from DE to NL.
Ordered and payed just now.

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

Jerommel
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Sledgestone wrote:
That should be the same.

Mine is 100% pure though, but that shouldn’t make a difference.

This is available from the UK
https://m.ebay.com/itm/Toluene-Toluol-500ml-99-9-Pure-very-High-quality-...

Hey, that’s a fairly good deal too.
New listing? Hadn’t found it previously, or maybe i thought it was too expensive.. (?)

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

KawiBoy1428
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Ordered this to try out… $35.09 shipped….http://www.ebay.com/itm/Toluene-Toluol-1000-mL-32-fl-oz-/201393760689?ha...

MEK hot or cold just ain’t getting it for me….

KB1428 “Live Life WOT”

Tom E
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Oooh - KB, you beat me to it, but that was a help smile.  I got an unused can of MEK sit'n around. Keep us posted - it's expensive though but interested to see if it works.

Sledgestone
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I had hoped that you guys would have held out until I’ve had the time to do more testing Silly

Agro
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Vinh stopped fully removing SST-40 domes, now he shaves them. He says it gives him the same throw, but better output.

Jerommel
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Sledgestone wrote:
I had hoped that you guys would have held out until I’ve had the time to do more testing Silly

Haha Big Smile

Your picture of the nitro thinner dedomed SST-40 next to the toluene dedomed SST-40 shows exactly why we should use toluene.
The greenish tint is all to familiar to chemical dedomers, we all want the other result (right one in the picture).
Also, the fact that a tough dome like SST-40 is gone after a short while, and without heating the solvent, is another reason to get pure toluene.

Thumbs Up

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

led4power
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Hotspot with toluene dedoming is also visibly larger, which should mean silicone is not completely removed, smaller tint shift also indicates that.

Tangra
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What driver can I use for this diode to achieve 6V Vf?

Jerommel
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led4power wrote:

Hotspot with toluene dedoming is also visibly larger, which should mean silicone is not completely removed, smaller tint shift also indicates that.


Hmm.. You might be right..

..waiting for parts..

Still looking for 5” parabolic reflector (for recoil light)

Sledgestone
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This could also be because of different C8 hosts. I couldn’t completely screw the bezel down on the Toluene one. So it might just be different focus.

Edit: I’ll swap the mcpcb in both host and check if it makes a difference on the hotspot.

giorgoskok
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Jerommel wrote:
Sledgestone wrote:
I had hoped that you guys would have held out until I’ve had the time to do more testing Silly

Haha Big Smile

Your picture of the nitro thinner dedomed SST-40 next to the toluene dedomed SST-40 shows exactly why we should use toluene.
The greenish tint is all to familiar to chemical dedomers, we all want the other result (right one in the picture).
Also, the fact that a tough dome like SST-40 is gone after a short while, and without heating the solvent, is another reason to get pure toluene.

Thumbs Up

I use only nitro paint thinner and tint shift is nearly invisible . I don’t know why he got such a warm tint , seems really weird …

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