Awesome, thank you for the video! And thank you very much for publishing your manufacturer It’s good to know that they’ll also produce small quantities.
Does actually someone have any experience with these guys: Thermal pad mcpcb for Flashlight Since they offer kind of the same.
Thermal pad dont have dielectric layer under it, not mask.
What is about height level of thermal pad? Is top of this layer flat to the mask or it is similar to sinkpads and cutter boards?
I too have considered something similar. I was thinking about having a batch of light engines built on copper. Where the components from a FET driver and the set of LEDs were on there.
Same here, kind of like the ones Lux-RC makes. But I think it would be hard to find components small enough. But a 20mm board with some AMC7135s should certainly be possible.
As a FYI, with a different order I received as a gift a couple of the DTP boards from the same manufacturer (Kerui) that the VOB is mentioning in the OP, but mine are 20mm XM-stars instead of 16mm XHP70, and I sawed one in half and made a few pictures. The DTP-pad looks nicely raised to the electrical path level
In my case the benefit would be ease of assembly. If I were to do it I would make them on the 32mm 3x boards that my maglite dropins use. This would cut assembly time, and also reduce machining time on the housings. No driver slot in the bottom would be needed.
For one thing, true thermal step-down would work more reliably, I’d guess. All the heat would be in one place, and the driver could read that. Also, if the traces were made wide enough and thick enough, you’d be shaving some resistance that would normally be introduced in the path from driver trace -> solder -> wire -> solder -> LED trace. It could be instead a solid copper trace from driver to LED, and potentially a shorter path as well.