I just finished my 2nd tube and so far it’s been excellent. Opened my D4 after almost 18 months to do another emitter swap and the paste wasn’t dry. The problem is it’s sold out at every supplier in SA for the past 3 months. I should have bought more when I had the opportunity.
I got some IC Diamond paste and i was surprised by A LOT how effective this one is.
You can feel the heat much sooner than with any other paste i've tried. Bloody amazing!
Since it's quit thick it doesn't get dry so fast unlike others.
But as soon as i discovered this gem, i've start soldering MCPCBs... THE BEST solution for heat transfer!
in our flashlight applications we try to ensure both surfaces are flat and smooth as is practical.
this reduces the dependency on the type of compound used.
then i use the same generic white compound i use when replacing igbt /ipm modules in motor drives.
its silicone oil and zinc oxide based.iirc its cooler master ice fusion.
cheap and does not dry out. some of these ipm’s are huge so low cost is important.
too many lights are built with sloppy surfaces that negate even the best mcpcb or compound.
speaking of mcpcb there is now no reason to use aluminum mcpcb with dielectric layers.
copper dtp serve as a very effective heat spreader with a low thermal resistance from the die to the copper.
makes life easier passing the heat to the lights body.