Nice, thinking about getting those too. Did you do 4k or 5k?
Bridgelux EB Gen 3 High Output 4ft Strips
- Thread starter MidnightSun72
- Start date
That's what I'm wondering, maybe it is just cheap marketing on their part.
A digi-key engineer said it is possible that they are completely different diodes. But that seems unlikely to me if you are saying they are the same size as the regular Gen 3. He also said that maybe the PCB has "Heavier copper layers maybe, possibly a lower junction-case thermal resistance on the emitters. Or possibly nothing; selling the same product with two different labels at two different price points is not an unheard of marketing tactic…".
Rocket Soul
Well-Known Member
My best bet is that they use high output double die chips, 2 in 1 with double nominal current. And that @ 1400mA nominal is not compatible with no heat sinks. My best bet is that someone made a misstake in the datasheet and whoever youve been in touch with at blux is just quoting the datasheet, even though its not right. I dont know any 2 foot plastic strip that can take 28w output without trouble.
These might be interesting for using like a standard eb currents (700mA) but hopefully more efficient. I had a buddy do tests on the standard gen3s if anyone wanna get these tested im sure i could get it arranged but it would mean sending the strips to Australia (not a good idea for 4 footers
These might be interesting for using like a standard eb currents (700mA) but hopefully more efficient. I had a buddy do tests on the standard gen3s if anyone wanna get these tested im sure i could get it arranged but it would mean sending the strips to Australia (not a good idea for 4 footers
MidnightSun72
Well-Known Member
I offered to send 3500k Gen 3. Strip for testing and even pay for it. But he just referred me to the 90CRI 2700K test. I'd kill for some IES files of these strips so I can map out my room in dialux because I have some layout ideas I'd like to test without drilling and hanging lights 1000 times. .My best bet is that they use high output double die chips, 2 in 1 with double nominal current. And that @ 1400mA nominal is not compatible with no heat sinks. My best bet is that someone made a misstake in the datasheet and whoever youve been in touch with at blux is just quoting the datasheet, even though its not right. I dont know any 2 foot plastic strip that can take 28w output without trouble.
These might be interesting for using like a standard eb currents (700mA) but hopefully more efficient. I had a buddy do tests on the standard gen3s if anyone wanna get these tested im sure i could get it arranged but it would mean sending the strips to Australia (not a good idea for 4 footers
cobshopgrow
Well-Known Member
wanna know which diode they use there too.
i would wonder how thex squeeze 2 led dies in a case they usualy use for a single die, 2835?
they both use the same generic casing, what they can do is maybe use another lil higher grade bin, if.
having troubbles seeing big differences to the regular eb3, what i dont get?
nominal current is 700 and 1400mA, like with the regular ones and the lumen per watt are looking very similar.
they even print Imax 700mA on the strip itself.
also the 1400mA max are like normal with any blux strip, can be done, needs probably a heatsink.
i would wonder how thex squeeze 2 led dies in a case they usualy use for a single die, 2835?
they both use the same generic casing, what they can do is maybe use another lil higher grade bin, if.
having troubbles seeing big differences to the regular eb3, what i dont get?
nominal current is 700 and 1400mA, like with the regular ones and the lumen per watt are looking very similar.
they even print Imax 700mA on the strip itself.
also the 1400mA max are like normal with any blux strip, can be done, needs probably a heatsink.
Rocket Soul
Well-Known Member
I think the double die is quite common. Im pretty sure that the Cree 2835 HE is a double die and it has max amp 480mA : double the normal crees midpowers. I know alot of olld blurple chips where marketed as double die. Heck if they can get in 8 coils in a 5050 chip they should be able to squeeze in 2 in a midpower. Will and vaseline, lol.
Im pretty sure you can take the 90cri results and add maybe 2-4% in par /w. Really your in the realm of so small differences that i dont think it matters. The blux HO seems to another chip maybe Tek would go for it. Also he might be more amenable now after Covid stuff have settled a bit more where hes at.
Im not sure if he made or wanna share ies files. After all its business and his equipment cost a lot.
Rocket Soul
Well-Known Member
Te borran los post o los borras tu? Que cada vez desaparechen. Creo que les da mania lo del no ingles, o quizas algun usario
welight
Well-Known Member
Thrive chips have a max drive current of 80ma which seems quite low and would possibly explain why thrive strips have lower max rating, 98cri chip sets are generally lower drive rated, Cree 2835 Hi Fidelity 98 CRI is max 150ma as opposed to normal Cree 2835 HE at 480ma
cobshopgrow
Well-Known Member
on RGB 2835 leds its clear theyre using more then one die, so its doable even without vaseline.
while have never seen any bridgelux phosphor coated led using this technique, the numbers from the blux exel sheet also doesnt indicate a big jump or other differences.
would be interessted to read, where is it explained the cree 2835 he is using 2 dies.
the datasheet simply dont say much about it.
maybe not even the led youre refering to as it states 240mA max.
MidnightSun72
Well-Known Member
Anyone load that 2ft strip model into dialux? It comes up as a round fixture for me instead of a strip. Kind of weird snd making me doubt the results. Plus I am only getting about 500-600ppfd at 18" below the light with 56 of the 2ft strip ies file @ .700a
Rocket Soul
Well-Known Member
Youre quite right, too many datasheets. I was thinking of the lumileds 2835 HE
welight
Well-Known Member
welight
Well-Known Member
you have to adjust the light on ies import to its actual size
cobshopgrow
Well-Known Member
am confuesed there too atm.
cree datasheets are a bit confusing and now we have the Lumileds HE also
.no big deal, just was interessted what they do.
in the end the EB3 HO are the biggest miracle.
thanks for the info welight.
i thought this curve f.e. and the other data from above datasheet refers to their 2835 3V HE, maybe just a outdated datasheet.
cobshopgrow
Well-Known Member
i think this is the led used in the HO strips.
this is the regular blux EB3.
if you open the Bridgelux SMD Product Simulator EFFECTIVE 20200708 Rev 11.xlsm in their product sim you see the
beeing the best of the bunch and if thats the one used on these HO strips it looks not bad.
at a low 20mA
lpw = 190/204/198
"
this is the regular blux EB3.
if you open the Bridgelux SMD Product Simulator EFFECTIVE 20200708 Rev 11.xlsm in their product sim you see the
| 2835 0.5W 3V D |
at a low 20mA
lpw = 190/204/198
| 2835 0.5W 3V Gen2 | BXEN-30E-11M-3AA-00-0-0 | 190 | 150 | 150 | 20 | 2,7 | 0,05 | 10 | 0,2 | 2,8 |
| 2835 0.5W 3V(CRI90) | - | - | - | - | - | - | - | - | - | - |
| 2835 0.5W 3V D | BXEN-30E-21M-3DA-00-0-0 | 204 | 180 | 150 | 20 | 2,6 | 0,05 | 11 | 0,2 | 3,0 |
| 2835 0.5W 3V D(CRI90) | - | - | - | - | - | - | - | - | - | - |
| 2835 0.5W 3V Gen3 | BXEN-30E-11M-3CA-00-0-0 | 198 | 180 | 150 | 20 | 2,7 | 0,05 | 10 | 0,2 | 2,9 |
I don't see how 2835 0.5w 3v D could be the HO. It's efficiency is better than the Gen 3, yet in the datasheets for these two products the HO is slightly less efficient.
MidnightSun72
Well-Known Member
Because it's the same efficiency at double the amps with the same number of diodes. So it has to have started at a more efficient point.
ilovereggae
Well-Known Member
just had an idea. im going to try to contact someone from Bridgelux on LinkedIn maybe if we can find an actual engineer they can help solve this mystery. I feel like maybe the questions just aren't getting to the right people. who knows what kind of corporate ladder is in effect.
MidnightSun72
Well-Known Member
I didn't think of LinkedIn. But I did even message one of their employees on Skype. No response. Lmao.