See Maukka's report on 4000k here: https://budgetlightforum.com/comment/1747794#comment-1747794
The 4000k is still in stock, here's final pricing (all transfer fees included)
Item Cost: $12.6 $11.0 (effective december 2020 onwards)
Shipping: Refer to this thread instead: https://budgetlightforum.com/node/69056
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Following the discussion on http://budgetlightforum.com/node/68689
Djozz's test: http://budgetlightforum.com/node/68899
Meet the GT-FC40, the domeless sister of the XHP series. The one in the picture (on the left) is a 40w LED 5000-5500k (I'd say 5300k) that produces up to 3200lm at 95 CRI.
The one on the right is CREE's XHP70.2 5000k 90 CRI.
Specs (5000-5000k version)
Voltage: 12-14v (13.3v @ 3.0A)
Current: 3.0A (may tolerate above 3.5A, but not recommended) -- Djozz's test indicated that the LED may survive up to 7A (92W) for a few minutes with proper cooling
Output: 3000-3200lm (at nominal current)
CRI: 95+
Construction: Flip-chip blue LED, Silicone-based phosphors
MCPCB: 20mm star
The one above is on A5 bin (5000-5500k), but A4 bin (4000-4500k) is also available.
Anyone who are interested can sign up here, specify the amount and color. You can sign up for both colors, of course.
for example:
- A5 bin 2pcs, A4 bin 3pcs.
- 4000k 2pcs, 5000k 2pcs.
The regular price will be $12/ea, but if a color has the total order of at least 45pcs, OR at least 80 pcs for both color combined, the price for the people in the list will be $11/ea (the discount only applies to the color you signed up with).
I am targeting at least 35pcs/color or 60pcs total before it's financially viable for me to buy.
The minimum you can buy is 1pcs, but you can contribute to lower pricing for everyone here by pushing the total. There are two methods of shipping: $4.5 Standard (Tracked, 2-4 weeks delivery time), $1.5 Economy (Untracked, 2-8 weeks delivery time *use at your own risk*).
Be responsible, I'm presuming that everyone signing up here are reasonably determined to buy. My motivation to find more stuffs in Alibaba depends on the success of this GB.
Here we are, 4000k has arrived. The 5000k will have to wait.
Die porn shot, A5 bin from previous sampling on the left, and the A4 (mass produced) on the right.
Color variation test on two LEDs @4000k: not exactly equal but at least both can be considered in a rosy territory.
As happened in the djozz's samples, the chip on the LEDs indeed aren't perfectly matched. At 9.0v we might see an entire row almost gone missing.
Bumping the voltage slightly to 9.3v and the entire array now lit up fairly evenly. Luckily, at 9.3v my lab bench didn't even register 10ma current-wise. So, the voltage mismatch doesn't seem as serious as it would look at 9.0v. For aesthetics reason, however, you might want to keep the voltage (esp. for ultra-low mode) at 9.3v or above.
Reserved for counting
Total order: (38/60pcs -- 80pcs for discount)
4000k buyers: (26/35pcs -- 45pcs for discount)
1stein -- 1pcs
KevinZA1988 -- 2pcs
Skylight -- 2pcs
DavidEF -- 3pcs
808Hi -- 2pcs
whipskirtayeyay -- 1pcs
SKV89 -- 2pcs
id30209 -- 1pcs
contactcr -- 1pcs
BueSwordM -- 3pcs
Shirnask -- 2pcs
Uncolo -- 2pcs
Texas_Ace -- 2pcs
sanches -- 2pcs
5000k buyers: (12/35pcs -- 45pcs for discount)
1stein -- 1pcs
808Hi -- 2pcs
KevinZA1988 -- 2pcs
whipskirtayeyay -- 1pcs
SKV89 -- 2pcs
id30209 -- 1pcs
BlueSwordM -- 1pcs
Unloco -- 2pcs
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
Thanks for this opportunity, really happy with it.
Just for curiosity:
In for 4000K 1 pc, 5000K 1 pc
[WTS] HID host: http://budgetlightforum.com/node/68693
[WTB] Interesting LEDs:http://budgetlightforum.com/node/68968
Are these bare or on the shown mcpcb?
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)
A5 bin 2pcs
808Hi
On the shown mcpcb
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
I wonder if these will be available in different MCPCB sizes.
Interested in 1× 4000K and 1× 5000K. Thanks
Acebeam L18, Armytek Prime C1 Pro, Armytek Prime C2 Pro, Armytek Tiara C1 Pro, BLF A6, BLF FW1A, BLF FW3A, BLF FW3C, BLF LT1, Convoy L6, Convoy C8+ , Convoy S3, Emisar D4, Emisar D4V2, Emisar D4K, Emisar D4SV2, Fireflies E07, Jaxman E2L, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Olight Baton 3, Olight Warrior Mini 2, Olight M2R Pro Warrior.
Most of them have been modded! =)
https://photos.app.goo.gl/JaJaDv4V838AEJf39
Probably not in the near future. They seems to be only have 20mm MCPCB in stock for now.
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
I would like two pieces of the A4 bin (4000K). Thank you.
My Youtube channel: Alllightson Reviews
My OL contest builds: 7th 8th 9th
My reviews: Sofirn SP31 V2, Nightwatch NI40, Sofirn C8F 21700, Brinyte WT01, Sofirn SD05,Ti AAA keychain, Sofirn SP33 V3, Skilhunt M150
My video-reviews: Brinyte WT01, Sofirn SD05, Ti AAA keychain, Sofirn SP33 V3
A4 bin 3PCS
The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy
Also add A4 bin 2pcs to my order
808Hi
Bumping because I’m surprised this hasn’t taken off a little bit more.
The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy
12V and no testing is a pretty big barrier to entry. We are watching no worries
The 3A limit is also a possible issue if it truly can’t handle anymore then that. That could be a real issue with using FET drivers which would make it even harder to use these.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
I quoted 3.0-3.5 A from the manufacturer’s spec sheet. I have no idea how much it can take more than that due to the lack of testing equipment. I sent the samples to djozz for this purpose.
In comparison, the 12v version XHP70.2’s are rated at 2.4A as the absolute maximum, yet I saw people overdrive the hell out of it.
These FC-40 can probably survive well above 3.5A (at least for a short period), but I probably don’t want to take responsibility for that claim.
Anyway, djozz has gotten samples, and I hope he publishes the result soon. Keep an eye on the discussion thread.
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
I thought it strange that the limit would only be 0.5A more then the rating.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
Definitely interested in:
(1) 4000k
(1) 5000k
Clemence had problems placing four E21a’s too close together, some of the photons would go out the side of the emitter and heat up the one beside it. It lead to the whole array overheating and dying.
This led has the advantage of phosphor between the dies but the four in the middle may have a hard time trying to stay cool.
Test:
http://budgetlightforum.com/node/68899
link to djozz tests
Please put me down for
2) 4000K
2) 5000K
Thanks for the test Djozz. Very interesting results.
I would be interested in a ~4500k 95CRI version for testing depending what my funds look like at the time.
If 4500k doesn’t happen then I could go either 4000k or 5000k. Both if I have the funds available.
If you could get this LED in 3V I would seriously consider swapping my EDC over to it. Just sad there are no TIR optics for this size LED in 20mm.
Texas Avenger Driver Series
My LED Test series - XP-L2 V5 - Nichia 219C 90+ CRI - Latticebright "XM-L" - XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5 - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT - XHP70.2 P2 - XHP50.2 J4 - Samsung LH351D
Easy comparison tool for all my LED tests
They said they can do 6v if there is enough demand, but that usually means thousands of pieces to be ordered. That’s something I don’t want to risk going bankrupt over. Maybe @Djozz could try desoldering one of these and see what’s beneath it and if swapping to 6v MCPCB is possible. I previously sent him two pieces so he can abuse one of them as much as he like.
4500k seems unlikely as they usually make A5, A4 and C2 bins in their other product stack.
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
1pc 4000k
1pc 5000k
WTB Titanium 4sevens 2xAA tube
Anyone care to guess the throw vs xhp35 hi at the same current?
I’d hazard guess slice&diced XHP70.2 in term of beam profile, but less overall brightness due to “CRI Tax”
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
Please double my initial interest. Thanks
Acebeam L18, Armytek Prime C1 Pro, Armytek Prime C2 Pro, Armytek Tiara C1 Pro, BLF A6, BLF FW1A, BLF FW3A, BLF FW3C, BLF LT1, Convoy L6, Convoy C8+ , Convoy S3, Emisar D4, Emisar D4V2, Emisar D4K, Emisar D4SV2, Fireflies E07, Jaxman E2L, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Olight Baton 3, Olight Warrior Mini 2, Olight M2R Pro Warrior.
Most of them have been modded! =)
https://photos.app.goo.gl/JaJaDv4V838AEJf39
1× 4000k for me
Thank you for organizing this. Any possibility of including the A3 bin?
I will focus on A4 and A5 in this GB run. Other bins may be possible in the next round, if this run is successful.
High CRI or Bust.
Ongoing Quest: 5mm thru-hole High Power, High CRI 4500k emitter group buy.
Current interest list:
https://docs.google.com/spreadsheets/d/1CXZmiVGHpHvenmt0NSIr5ttRq5Lr_v7J...
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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