Re: Stuffing boards with pulled QFP chips

On 03/31/2017 06:15 PM, Jon Elson via cctech wrote: > I have a project I do from time to time using 128-lead 14mm TQFPs > with 0.4mm lead spacing. I use a stereo zoom microscope with a > home-made LED ring light. First, I rub the pads with a pencil eraser > to remove oxidation caused by reflow

Re: Stuffing boards with pulled QFP chips

On 03/31/2017 06:28 PM, allison via cctech wrote: Is this something that an experienced hand can manually do? Yes, definitely. 100 lead PQFP is perfectly doable if the lead pitch is not insanely small. It takes a good fine tip soldering iron (mine is a Weller with a PTS tip), fine solder

Re: Stuffing boards with pulled QFP chips

On 03/31/2017 02:00 PM, Paul Koning wrote: >> On Mar 31, 2017, at 1:51 PM, allison via cctech >> wrote: >> >> On 03/31/2017 06:32 AM, David Griffith via cctalk wrote: I'm down to the last few P112 boards for sale and am pondering another run of them because

Re: Stuffing boards with pulled QFP chips

On 03/31/2017 06:32 AM, David Griffith via cctalk wrote: >> >> I'm down to the last few P112 boards for sale and am pondering >> another run of them because demand is steady. One of the biggest >> challenges for the last run was getting the QFP-packaged 100-pin >> chips[1] in a state such that