KD (kaidomain): Deals and new products thread

Buy / Sell BudgetLightForum Deal Alerts
1801

The default configuration is 6V or dies in 2S2P configuration, and it is dependant on MCPCB type. Kaidomain sells it on 6V/2S MCPCBs.

The problem with a lot of 12V/4S 5050/7070 MCPCBs found in the chinese market is that they route the current of the upper dies to the lower dies via the thermal pad, which leaves it at half the emitter electrical potential and rules it out as valid for flashlights without MCPCB insulation.

As far as I know only leddna (?) has dual voltage/arrangement 5050/7070 MCPCBs available, SinkPAD is the brand:

This pic is from djozz, grabbed from here.

1802

Have you considered GT-FC40
I think itā€™s a nice option for many lights where high CRI and XHP70 footprint are desired.

1803

It is nice option but Convoy driver is 6V. Also I desire more flood light with OP reflector of M21C. GT-FC40 is nice for thrower.
So KD XHP70.2 emitters are all in 6V confuguration if I undersood from Barkuti post?

1804

Kaidomain has some cool new products for flashlight enthusiasts who want quad LEDs in the 20mm format:

http://kaidomain.com/Flashlight-DIY-and-Tools/led-pcbs-or-mcpcbs/S028369-KDLITKER-Quad-4QP-20-DTP-Copper-MCPCB-2pcs

Unfortunately the optics are >20mm and wonā€™t fit the S2+, but you can put them in slightly bigger heads.

1805

Thank you for this! Just nabbed a quad 219b 3500k p60 drop-in and some much need spacers!

1806

These are not new (literally years old bad design) and often problematic quad boards/optics. When you assemble them be very careful about how the optic and PCB fits together. It can work itā€™s just not a drop in solution like you may be used to with the plethora of triple options.

1807

XHP70x configuration depends on the MCPCB; I haven't seen a properly done 12V MCPCB in the chinese market with the exception of the above by LedDNA.

The GT-FC40 or other 4S/12V emitters can be driven with an H2-C driver (now upgraded, more powerful). One good thing I see in the H2-C driver is that it supports 2S battery input, or input from 2 cells in series. With 2S cells I am fairly sure the current output could be risen a good deal further without problems.

1808

Too bad H2-C is 2.2A only.
Iā€™ve been looking for a good driver for this LED and aside from 4S FET ones the only good option that I see is GXB100 - but probably only one was ever made.

1809

The Convoy XHP35 driver was tested to be quite ā€œoverclockableā€ (see Convoy XHP35 Driver Analysis / Testing / Schematic). This new H2-C is still untested, but stock it works with 2S input which is a plus concerning efficiency and power input capability (double voltage by the current is twice the input power).

Looks with great modding potential, hope they didn't cheaped out on something with it.

1810

Quad Seoul SZ5 MCPCB, LED & Optics

Interesting price for 4x emitters, MCPCB (emitters already soldered) and optics are also included. for a quick and dirty quad build.

anybody knows more about Seoul SZ5 LEDs? are they any good?

Thanks.

edit if the link above doesnā€™t work (does NOT work for me), then please copy/paste this one:

1811

Hi friends

New Cree XM-L3 is available now.

Cree XM-L3 U4 1B White 6500K LED Emitter

Enjoy :smiley:

Ban

1812

Interesting news. :slight_smile:

1813

Will there be other tints and is there an increase in efficiency?

1814

6500K only? Iā€™d like to see this LED tested by someone before buying.

1815

The crappiest versions usually come first. For n00bs with crappy low CRI cool white flashlights to wander at nightā€¦ :-D

1816

I hope the 5D(4) bin will become available once.

1817

Datasheet goes down to 5000K, but that's it, but still U4: https://www.cree.com/led-components/media/documents/data-sheet-XM-L3.pdf

also spec'd at 5 amps max. The XM-L2's were spec'd at 3 amps max. There's some hope here.

1818

I ordered 2, but no promises about when the test will be done.

1819

Nice, thanks djozz! Put 2 in the cart but need something more to order...

1820

How long is too long to wait in the current climate? Iā€™ve been waiting 3 months now. The only info I have from tracking is from 3 months ago ā€œInformation Received ā€“ Item En Route to Postal Facilityā€. Iā€™ve received a number of different orders since and fear the worst :frowning: