Fw: [softrock40] Re: [AQRP] Manhandle those .5mm pins
- --- In firstname.lastname@example.org, windy10605@... wrote:
> >I have a 20 pin QFN package that I have to attach. The best idea that
> >has occured to me so far: hollow the the ground pad area of the pcb
> >completely, then machine a slug, tin, heat and complete with a strap
> >on the back.
> >I'm seriously open to any and all suggestions.
> Surface tension has allways pulled solder into vias and if you feed in
> more solder it comes out the other side. At least that's been my
> experience. I would make sure the ground vias (use 2 or 3) you are going
> to use are at least large PIH size and have "thermals" but you don't
> to have them so large that the soldering tip touches the ground pad onDefinitely less time consuming than my idea! I appreciate the input.
> the part. Just heat up the via and feed in enough solder to contact the
> ground pad and let it flow. I think you'll find that solder readily
> attaches to the ground pad.
> 73 Kees K5BCQ
Since the pad on this is 2x2mm (CC2500) I could probably get 1 #68 in
there, which will be big enough to fit my smallest tip in. I'll
probably do a couple and remove them to check for flow with this method.