Custom CRI 90+ 4W GU10 LED spotlight bulb LUXEON 2700/4000/5000K

Bocian · 2019-10-29T12:06:41.000Z

The latest edition of modified Niviss 4W LED spotlight bulb described below:
Bocians custom 90+ CRI 4W GU10 LED spotlight bulb 3000/4000/5000/5700K
This version is based on Lumileds LUXEON 3030 2D Line (Square LES) LEDs It is new Lumileds product, achieving efficiency levels of 130-145lm/W at CRI 90+ (it is rather in vain to look for such 3030 diodes from other manufacturers). Such high efficiency was achieved due to, among other things, the specific structure of this emitter (the light emitting surface of the diode has a square shape). It is also interesting that color coordinates are “hot binned”, at a temperature of 85 ° C (thanks to which the declared color parameters of light , are to correspond in real terms of use to the manufacturer’s declarations.) Below is the link to the LEDs documentation:
SPECIFICATION:

Two-structure LUXEON 3030 diodes are connected in 2s2p topology and powered 140mA per emitter. The isolated converter supplies ~ 11.5V voltage and 280mA output, which gives the power of ~ 3.2W with which the diodes work. The measured efficiency of the inverter is ~ 80% at a power factor of PF = 0.6 Optics - textured reflector. Total wide emission angle approx. 120*.

Heat sink made of CNC machined aluminum with a very good thermal possibilities in relation to the power with which the source works. The total active power consumed from the 230V grid is 4W (after heating up, the average power consumed is 3.8W). The temperature that the radiator reaches after heating at room temperature is ~ 50*C. Onboard converter with isolated and very fast output (frequency 60-70kHz) which means no exhausting eyes flickering (strobo / flickering effect). The power supply has high quality components (including Rubycon BXC series electrolytic capacitors).

Housing in color SILVER + gray bezel, GU10 base (connected directly to the grid).

Input Voltage: 85 – 264 V AC
Frequency: 47 – 63Hz
Operating temperature: –20°C – +40°C
Lifetime: Up to 50,000 hours @ 25°C room temperature

Below all available color options:

2700K CRI min. 90 luminous flux min. 400lm – 8$
4000K CRI min. 90 luminous flux min. 440lm – 8$
5000K CRI min. 90 luminous flux min. 440lm – 8$

Shipping cost (international shipping priority registered package via Polish Post):
1-5 pcs 5$
6-8 pcs 7$
9-16 pcs 13$

PayPal payment.
Each source has a 3-year warranty from the date of sale.

Total length of the 54mm source
Diameter at the widest point of 50mm
Weight 58g

The luminous flux of LED module for the 85*C LEDs junction temperature.

Agro · 2019-10-29T12:23:20.000Z

According to datasheets:
Everlight 62-227ET/RK6D does about 200 lm/W (not sure, probably cold binned). But it’s not 3030.
Osram Osram Osconiq S3030 does 173 lm/W cold and about 163 lm/W warm. And it is 3030.

BTW, I like your lights.

Bocian · 2019-10-29T12:33:19.000Z

Agro:

According to datasheets:
Everlight 62-227ET/RK6D does about 200 lm/W (not sure, probably cold binned). But it’s not 3030.
Osram Osram Osconiq S3030 does 173 lm/W cold and about 163 lm/W warm. And it is 3030

With CRI min. 90? Check one more time

Agro · 2019-10-29T12:36:41.000Z

Yes, CRI min. 90.
Osram GW QSLM31.QM.

Agro · 2019-10-29T12:49:27.000Z

Also, Samsung LM301B seems to do about 145-185 lm/W when hot depending on CCT and bin lottery.

Lexel · 2019-10-29T13:00:10.000Z

2700K 90CRI 132lm/W L130-2790003000X2 @120mA hot

132lm/W CRI90 2700K
11.2V 280mA—>3.22W—>425lm
80% PSU
3.22W/0.8—>4.025W

so all is pretty much solid

Bocian · 2019-10-29T13:23:32.000Z

Yes bin lottery :-). All the LEDs manufacturers pride themselves on advertising brochures with extremely high product performance that is achieved by a small percentage of total production (and is usually not available for mass purchase). As you can see, these are all quite fresh products (a common feature is the square emission surface). To be honest, I have to admit that I started this project a few months ago and did not follow new products of 3030 class from other manufacturers. Osram GW QSLM31.QM, as I can see, has a lower thermal resistance but is a single 3V diode (in this design you would have to use them twice as many). It also has a statistically lower forward voltage (hence a slight advantage in efficiency at similar currents, e.g. for the 2700K option).

Lexel · 2019-10-29T14:10:38.000Z

Bocian:

Yes bin lottery :-). All the LEDs manufacturers pride themselves on advertising brochures with extremely high product performance that is achieved by a small percentage of total production (and is usually not available for mass purchase). As you can see, these are all quite fresh products (a common feature is the square emission surface). To be honest, I have to admit that I started this project a few months ago and did not follow new products of 3030 class from other manufacturers. Osram GW QSLM31.QM, as I can see, has a lower thermal resistance but is a single 3V diode (in this design you would have to use them twice as many). It also has a statistically lower forward voltage (hence a slight advantage in efficiency at similar currents, e.g. for the 2700K option).

In that table they give you the minimum guaranteed flux for this combination of CRI and color
those low power LEDs are usually pretty much on the typical specs, and if you buy a specific reel you target for above typical flux

All those XPL V6, XHP35 HI D4, XHP70.2 P2 bins are quite a lot above the typical in the data sheet

I am pretty sure they know which flux group they got to build in the product to meet their own specs

When I build a flashlight I also know which bin I get, there is no lottery involved if you build stuff

Scallywag · 2019-10-29T14:13:50.000Z

Where was this a month ago when I bought lights for my hallway?
Instead I got CRI80 Satco S9385. Which aren’t even that much brighter…

Bocian · 2019-10-29T15:35:10.000Z

Lexel, you explain the rules that are obvious to me. Ordering mid and low power LEDs is different comparing to high power diodes (XPL, XHP…). For high-power diodes you gave as an example, we can easily buy a carefully selected, large amount of bins. But for the smaller ones, you usually buy diodes from a very wide bin range. I meant more about this situation: I open the Osram GW QSLM31.QM, data sheet and see on the first page: CRI 90+, Luminous Flux: typ. 31 lm @ 3000 K, Luminous efficacy: typ. 173 lm/W @ 3000 K for 65mA current. Then I see that the bin ranges for this option are very wide: 28.5 … 43.5 lm. I see 12 flux bin codes from the lowest GV (25,5lm-27lm) to the highest HV (42-43,5lm). So I think OK if 31lm is typical so I should find with no problem bin H2 (30-31,5lm). That should be ~31lm and 173lm/W (cold junction). I open google, try to find it and all I see (at Mouser, Digikey, RS-online) is only bin ranges (very wide from H1-HV - 28,5lm-43,5lm). Nobody will go to the warehouse to select manually most attractive rollers. And they can be very diverse (the range is wide). That is why it is a real lottery about low and medium power diodes. I am not a great producer who can negotiate and require from the manufacturer diodes with strict parameters (and they usually do not do it because it raises the price very much). It’s more like hobby production/modding

fneuf · 2019-11-01T22:05:40.000Z

By any chance, would you be able to tweak bulbs also?

Bocian · 2019-11-02T11:10:31.000Z

fneuf:

By any chance, would you be able to tweak bulbs also?

Yes, I have several designs of bulbs with high CRI. Link below but you must use translator:
https://www.swiatelka.pl/viewforum.php?f=57&sid=90349a50c40ed1c53ce988f2b25a9c7e

fneuf · 2019-11-02T11:21:58.000Z

That is very interesting Bocian. Do you have a full spectrometer report for your 3000K and 4000K setups?

Bocian · 2019-11-02T11:26:56.000Z

Some time ago Maukka tested Citizen 97 CRI 6,5W GU10 light sources. Link below:

Bocians custom 97 typ. CRI 6,5W GU10 LED spotlight bulb 2700/3000/4000K LED Light Bulbs

I wanted to present a few replacements for incandescent GU10 / MR16 LED sources based on Citizen COB type LED emitter (6th generation). CRI typical 97. The radiator is an aluminum cast (anodized) which means that the LED is in direct contact with the mass of the radiator - this has a positive effect on its thermal operating conditions. The total active power consumed from the 230V grid is 6.5W. 160mA current powers the LED with the voltage of 37.2 V, which gives ~ 5.9W of power with which the C…

Measurements:

Bocian Citizen COB 6 W LED spotlight bulb review (CRI97, GU10) LED Light Bulbs

Bocian sent me three of his Citizen COB based spotlights for testing. They come in three variations, 2700, 3000 and 4000 Kelvin, which covers the whole range of Citizen COB model number CLU028-1201C4 (click for datasheet). [image] They are relatively low power at 6.5 watts but with a good power factor of >0.9. All the models have great color rendering. The 3000 K sample of mine was a bit yellow, but the 2700 K and 4000 K were great. The beam is wide and even, so not really a spotlight. Here’s…

fneuf · 2019-11-04T08:30:56.000Z

That are some really interesting results! Do you have a list somewhere of all the custom products you offer?

Have to add, that right now you top-off the brand new "BLF Bulb Quality factor™" thanks to Maukka's test. Congrats!

Bocian · 2019-11-04T08:44:04.000Z

Hi. Yes, I can prepare such a list. BTW. Do you have any particularly desirable LEDs on which you would like to have LED-based sources? Any GU10, E27, E14 mounts and so on… But if it did happen, it would be small quantitative series.

fneuf · 2019-11-04T08:53:22.000Z

Based on my current knowledege, I think Nichia's Optisolis offering is top of the art and CitiLED the second's best. Have to think about it before being definitive, but personally I am sure to be interested in E27 bulbs, and maybe a few E14.

macross42 · 2020-01-22T08:29:00.000Z

Hi Bocian,

I’ve been looking for a high CRI, GU10 (120VAC), dimmable COB LED for sometime now, and was wondering whether this Lumileds LUXEON 3030 version is dimmable (and doesn’t flicker horribly at say <10%)? There have only been a few LEDs I’ve found that are, like SORAA. I especially like that you’re using Rubycon capacitors.

Thanks!

Bocian · 2020-01-22T08:55:00.000Z

Unfortunately these are not dimmable but have very fast output without the strobe/flickering effect.

macross42 · 2020-01-22T09:53:11.000Z

Ahh, thanks for the quick response! I noticed that the older Bocian Citizen CitiLED-based bulbs from the BLF table in Ultimate LED Bulbs - Ultra High CRI - The Honorable Quest indicate that they’re dimmable - is this correct (e.g., cell T8) (actual Google sheet: https://docs.google.com/spreadsheets/d/12jj1A6PNjHmWbFNu0FSisEztir7izxAhqw3ebxPLCZA/edit#gid=0). I thought your other post on the Citizen CitiLEDs indicated that they are not dimmable either. Thanks!

I should also add that I’m looking for qty around 120, in case there is an option for custom work to make them dimmable.