Respectfully, that is not true. The sinkpads and noctigons are either solid aluminum or copper, directly connected to the led thermal pad. And it has far better thermal dissipation than a small brass plug.
That is gold plated copper. It is soldered directly to the thermal pad of the LED through a plated Via in the PCB.
What makes it better than a sinkpad is the mechanical connector. The ability to drive a screw directly into the connector, and “pull” it forcefully against the heatsink is difficult to match with a sinkpad.
The resistance of TCAP-4325 is less than 2 degrees C per watt. Experimental data and application notes are provided in the datasheet.
The heatsink “comfortably” dissipates around 1 watt of heat.
(2.9V * 0.35A = 1watt)
I have 0.35 amp resettable fuses on them now, but theres no reason they cant take more power with a bigger heatsink, or at a higher temperature. The XML is rated for up to 3 Amps!
They work nicely at 0.35Amps though. Luke warm and very bright.
Apologies, I missed that it was copper. I would want to see a side by side comparison before I reach any conclusions though.
The more I look at it, the more I see each option has its own strengths and weaknesses.
I might have to find a use eventually for a few of those heatsinks though, they look a lot nicer than the generic ones. I see a remote phosphor plan already forming…
Any interest in sending one out to a member for testing / review?
Very cool!
I don’t do reviews but I’d like to volunteer, I’m setup to test output vs. temp (again for personal use, I haven’t done a review before) but I would for one of these.
What does the light under the unit look like? Have you considered diffuser film/roughing the surface?