UV/heat curable solder paste
UV/heat curable solder paste
(OP)
I'm looking for a single component solder paste (no two-parts, please) for prototype work with SMDs...I'm assuming the next best thing to two-part systems would be either UV or heat curable. Can anyone suggest brands, purchase locations, etc.
Thanks!
Thanks!





RE: UV/heat curable solder paste
http://www.highspeedpc.com/Merchant2/merchant.mv?Screen...
or search <www.dogpile.com>
<nbucska@pcperipherals.com>
RE: UV/heat curable solder paste
http://www.multicore.com
RE: UV/heat curable solder paste
strips alternating with non-conductive ones)
<nbucska@pcperipherals.com>
RE: UV/heat curable solder paste
Scotty, I'll keep the LocTite stuff in mind as projects size requires it. For the moment, having a shelf life measured in months and at freezing storage temps for single-component glues makes it more of a pain than it's worth.
If anyone else has any more ideas, I'm all ears...
RE: UV/heat curable solder paste
RE: UV/heat curable solder paste
RE: UV/heat curable solder paste
Works for me.
Takes a bit of practice though, specially on QFPs (above 100 pins or so) or SSOP packages.
A magnifying illuminator helps too, specially as you get towards 50 and the old eyes get longer and longer sighted.
rgds
Zeit.
RE: UV/heat curable solder paste
What kind of frequency ? Can't you use socket and through-
hole discretes?
Do you need to build it in final size?
HAPPY NEW YEAR !!
<nbucska@pcperipherals.com>
RE: UV/heat curable solder paste
I consider myself an accomplished solderman, so that's not the issue. The components are going onto a flexible substrate that for prototype purposes only needs to last a few weeks/months while I dink around with new ideas and placement. Not sure how well the silver paint will hold up to flexing in the lab, but if it holds on for a few weeks I'd be satisfied.
Obviously production units would use a higher strength resin, but mixing stuff up for a few components is more of a pain then I would like. In an ideal world, I would like a single component gel in a syringe that would cure with UV/low heat in a few minutes and do NOT require freezing temps for storage. That way I could keep the stuff sitting on my bench and use as needed without running to the freezer each time.
RE: UV/heat curable solder paste
Whatever you else you do, do not use a cyanoacylate type adhesive for this application. The adhesive decomposes at soldering temperature to give acrid choking fumes which burn your eyes. I seem to remember it is an isocyanate gas, but I'm not a chemist so I might be wrong.
I found out about this particular problem after a colleague glued down a circuit board track which had lifted during repair, which he then soldered. A lesson learned the hard way for him and the three other engineers present.