Electronics Forum | Wed Feb 08 06:58:12 EST 2017 | rob
I would recommend getting someone else to do it, like a specialist (Global Datum or other), as it makes a frightful mess. The world is littered with machine shops that have machined Durastone once.
Electronics Forum | Fri Feb 24 03:14:47 EST 2017 | rob
Deni, I would suggest N2O over straight Nitrogen, as you will immediately find your results more satisfying, and any defects will become less of an immediate concern.
Electronics Forum | Wed Mar 15 08:18:29 EDT 2017 | rob
It's well documented in higher power semiconductors where thermal interface materials are used, such as SIL pads, thermal grease etc. There are a couple of papers on the effects of voiding on MOSFET performance, but I haven't got around to reading
Electronics Forum | Wed Mar 15 09:53:58 EDT 2017 | rob
Hi Etimov, Understood that to us assembling parts that IPC is king, however it isn't neccesarily the bible for design engineers. We've had customers demand almost zero voiding, or had to use conductive epoxy to avoid it. For some of us solder joi
Electronics Forum | Wed Mar 15 11:43:45 EDT 2017 | rob
Hi PZ, What, sort of like this one? http://creativeelectron.com/papers/EconomicsofLEDVoiding.pdf It even has the handy calculation for the reduction in thermal performance with voiding.
Electronics Forum | Thu Mar 16 03:45:51 EDT 2017 | rob
It's the same thermal issue whether it's a die or package. It's different if it is just a signal trace, but if it's a heatsink pad (LED, FET, Motor driver, PSU IC etc). I think the voiding issue boils down to what the part is actually doing. The or
Electronics Forum | Thu Mar 23 04:18:23 EDT 2017 | rob
Have you thought of contacting these people: http://www.solder.net/ I have a feeling they may be quite close to you geographically.
Electronics Forum | Thu Mar 23 11:39:58 EDT 2017 | rob
Yep I know, British humour.
Electronics Forum | Thu Apr 20 01:58:15 EDT 2017 | rob
Personally, I try to keep them to a minimum, as if we put conveyors between the SMT machines I find less effort is made on automating awkward components - it's so easy to add a hand fit operation. We run Loader-Printer-Conveyor-3xSMT-Conveyor-Oven
Electronics Forum | Wed May 03 09:25:45 EDT 2017 | rob
Durastone pallets, we use lots of precision ones for selective wave soldering. An utter nightmare to machine - hideously fibrous. We use http://www.globaldatum.com/ for ours.
