Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

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vinte77 wrote:
Any progress on any of the new items that you are planning to release?

Limited qty of subZero switches should be available in 2-3days,spacers too, full kits 2-3days after those.

 

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adam7027 wrote:
led4power wrote:

I don't know what do you mean by "safe", it could be safe to use that host at any current, only difference is lumen output and time until host reach temperature that will trigger OTP protection.

I meant it regarding the driver plate. But as the head of a 8×7135 Convoy S2+ can reach temp easily above 70-75°C in still room temp air in less than 15 minutes, probably 6A with the E2L host will mean only about 3-4 minutes 'turbo' usage before driver protection shutdown mechanism at 105°C will kick in.

LD-A4 can handle 6-9A in triple setups,but only with good thermal path between driver's FET surface and flashlight body, something like S2+ thermal enhancement kit from my store would be required.

LD-B4 doesn't have these problems, but mosX boards must be used, and problem with JAXMAN host is that it uses non-standard ~19mm PCB diameter, with max. allowable diameter of ~19.5mm, at least that is what I've heard. Maybe new version of hosts allow 20mm pcbs?

Usually you can sand down pcbs by 0.5-1mm, but with mosX is there is high chance of short between copper top layer and core.

djozz
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The E2L still does not allow 20mm boards.

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led4power wrote:

vinte77 wrote:
Any progress on any of the new items that you are planning to release?

Limited qty of subZero switches should be available in 2-3days,spacers too, full kits 2-3days after those.


 

What about the high-current drivers? I want to order everything at the same time.

led4power
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Full kits will include drivers.

vinte77
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led4power wrote:

vinte77 wrote:
Any progress on any of the new items that you are planning to release?

Limited qty of subZero switches should be available in 2-3days,spacers too, full kits 2-3days after those.


 

Thumbs UpThumbs UpThumbs Up Looking forward to the new releases!
Athlon2350
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L4P-3of50 3€ for every order over 50€

L4P-10of100 10€ for every order over 100€

L4P-25of200 25€ for every order over 200€

L4P-45of300 45€ for every order over 300€

Coupon code not work Sad

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New coupon codes:

L4P-8of100 for every order over 100€

L4P-12of150 for every order over 150€

L4P-22of200 for every order over 200€

L4P-40of300 for every order over 300€

 

3of50 coupon is replaced by discounted registered shipping which is automatically applied for every order over 50€.

Coupons are not valid for bare Samsung leds since there is already qty discount under product options.

 

 

Agro
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Any chance you’ll get alu DTP boards in the future?

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Agro, can’t understand. How do you want to solder alu?

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Chatika vas Paus wrote:
Agro, can’t understand. How do you want to solder alu?

SinkPad makes both Aluminum DTP boards and Copper, while Noctigon are only available in Copper. These are the most recognized brands of DTP boards here, but there may be other brands that do Aluminum DTP boards as well. There is a metal coating over the contact points of the Aluminum DTP board to allow soldering the emitter.

EDIT: We’re talking about led4power made DTP boards here, which are all copper.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
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Oh… Got it!
I did not even know. I have always used the noctigon because it is easier for me to get.
Thanks.

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Yeah, L4P DTP Copper are said to be the top notch. He offers non-DTP alu boards which are superb too, way better than most non-DTP boards. But sometimes one would want that little edge over what non-DTP offers…

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Agro wrote:
Yeah, L4P DTP Copper are said to be the top notch. He offers non-DTP alu boards which are superb too, way better than most non-DTP boards. But sometimes one would want that little edge over what non-DTP offers…

I think testing has shown that in MOST configurations, his MOS-X boards perform at least as well as DTP, and in some cases even better than DTP, because DTP is only great at wicking away heat in the small area of the thermal pad of the emitter. The rest of the board top is heavily insulated from the core.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
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Do they perform just as well even if you use it with regular driver or is it only better when you have FET on the MCPCB like his special linear config?

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@Agro

ALU DTP boards are possible, but for flashlights no one uses them because copper DTP PCBs, while in theory ~2x more expensive, are still just small fraction of total cost of flashlight.

In other industrial areas they are much more common than copper DTPs because cost is very important, and difference in performance is rather small compared to copper DTP.

I have three types of boards:

1.Standard copper DTP - DTP pad in center, FR-4 based laminate on rest of the surface - used when you have only LED on MCPCB

2.mosX ALU-ceramic  - non-DTP board, isolated top surface from core, very good thermal conductivity (of course not as good as dtp Cu at very high powers) - since board is isolated,mosfet which generates heat in linear driver can be placed on such board; also it can be used for LEDs which don't have electrically isolated thermal pads (like OSRAM IR, some Nichias...). Also one advantage over DTP is that you can route thick traces "over" LED thermal pads during pcb design, this is very helpful when there is not much space for routing on pcb.

3.Copper mosDTP - DTP pad in center, high performance dielectric isolation on rest of the surface - this is the best possible combination,LED is cooled via DTP pad, mosfet is placed on isolated part of DTP, which thanks to the much higher performance dielectric, is also well cooled. This is also the most expensive solution, currently I have only one board in this technology, 20mm 4040 PCB.

 

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Added new OSRAM LEDs which replace BLACK FLAT - 1mm2, similar or slightly higher lumens, but with much lower Vf and electrically neutral thermal pad (normal DTP pcbs can be used). Also emitting area is pure square,without annoying wire shadows etc.

Preliminary tests show peak output of ~980lm@5.75A, 960lm@5A, I recommend 5Amps in flashlights because cooling is not as good as with bench tests.

https://led4power.com/product-category/leds1/osram/

 

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i’m guessing it’s cool white but any idea what the color temp is, roughly?

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As much as I want to own the current champ thrower LED, and put it in a light, I have to admit to myself that I have bought already enough LEDs, drivers, reflectors, and other components, and never did anything with them. They say the first step is admitting you have a problem. I’m admitting that I too often fool myself into thinking that “this time” I’ll actually do something with the amazing new technology that has suddenly come available, so I should buy it before somebody else does. Cash

Well, I’m not gonna do it. I’m going to leave these amazing LEDs for the true modders, who will make use of it. I will be amazed at their creation and wish I had it myself. But it won’t do me any good, because I’m too lazy to build it. Tired

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Thanks for bringing these to us. Looking forward to put into the EE X6 and Convoy S6 with SMO hosts.

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DavidEF wrote:
As much as I want to own the current champ thrower LED, and put it in a light, I have to admit to myself that I have bought already enough LEDs, drivers, reflectors, and other components, and never did anything with them.

I know how you feel. I really want to do a full Led4power build (MOSX MCPCB, LD-4 driver, illuminated tail cap) because the components all look awesome, but I’ve got a pile of components I still haven’t used yet.

Still, the OSRAM KW CSLNM1.TG (catchy name) does seem like the perfect answer to the question of what to do with the two Cometas I bought recently…

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I did buy some of the new leds despite the pile of components that I still haven’t used yet Facepalm
(I admit that I have a problem, that is the first step, right? Innocent )

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Are any new products going to be added any time soon? I’m not sure if shipping charges are going to change any time soon…

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Shipping fees should remain the same as they are now.

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L4p what color do these new Osram leds have?
And when the spacers for c8 i x6 will be available?

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Man the new Osram looks sweet. Too bad I already made an order from you last week. I will order some for the Cometas I got when you have the C8 spacers for the 6x emitters. Are you going to make a kit for the Sofirn C8F 21700? That seems to be the ideal light for this new mcpcb.

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SKV89 wrote:
Man the new Osram looks sweet. Too bad I already made an order from you last week. I will order some for the Cometas I got when you have the C8 spacers for the 6x emitters. Are you going to make a kit for the Sofirn C8F 21700? That seems to be the ideal light for this new mcpcb.

I sent some measurements to kiriba-ru for the C8F 21700 but you should express your interest to him as well. The C8F is e-switch and I suspect his e-switch driver may still be a ways off. Meaning, no “complete” kit for some time.

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contactcr wrote:
SKV89 wrote:
Man the new Osram looks sweet. Too bad I already made an order from you last week. I will order some for the Cometas I got when you have the C8 spacers for the 6x emitters. Are you going to make a kit for the Sofirn C8F 21700? That seems to be the ideal light for this new mcpcb.

I sent some measurements to kiriba-ru for the C8F 21700 but you should express your interest to him as well. The C8F is e-switch and I suspect his e-switch driver may still be a ways off. Meaning, no “complete” kit for some time.

No complete kit is fine. With Sofirn’s revised driver (the first one had problems) it is still a very good driver and with 6x emitters, it will run alot more efficient if not a whole lot brighter.

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Chatika vas Paus wrote:
L4p what color do these new Osram leds have? And when the spacers for c8 i x6 will be available?

The chromacity bin is: ebxD46. Looking at the Osram datasheet and plugging the coordinates into this website,
https://www.waveformlighting.com/tech/calculate-color-temperature-cct-fr...
the CCT is between: 5849k to 6384k
Less cool than the Black Flat
Plugging the coordinates here:
https://www.waveformlighting.com/tech/calculate-duv-from-cie-1931-xy-coo...
the DUV is between: -0.0044 and -0.0043, which will at least ensure the beam will not be green, maybe it will be a bit on the rosy side. I like the pure white of the black flat. Hopefully this is about the same.

The flux bin is 6N
at 1A: min 315 lm and max 355 lm

Compared to the Black Flat sold on Mouser=, which is 8M flux bin:
at 1A: min 250 lm and max 280 lm

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skinny_tie wrote:
DavidEF wrote:
As much as I want to own the current champ thrower LED, and put it in a light, I have to admit to myself that I have bought already enough LEDs, drivers, reflectors, and other components, and never did anything with them.

I know how you feel. I really want to do a full Led4power build (MOSX MCPCB, LD-4 driver, illuminated tail cap) because the components all look awesome, but I’ve got a pile of components I still haven’t used yet.


Me too… Tired
Still, boxes with plenty of parts are better than fewer parts. Innocent
Quote:

Still, the OSRAM KW CSLNM1.TG (catchy name) does seem like the perfect answer to the question of what to do with the two Cometas I bought recently…

Maybe call them “White Flat” ?
Yeah, i just ordered 3 pcs..
They will find homes pretty soon though. Smile

2Q19

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