It takes almost no solder on the ground plane to get a full bond. If you're getting solder balls pushed out, you've got too much solder on the pad. Just like heatsink compound, a very small amount of solder on the ground plane will spread out and fill the gap perfectly.
Tx I am building up courage to do this myself by watching a lot of these videos. I have not decided yet, but I need some mcp23s17 i/o expanders. For some weird reason they are completely sold out with some stock left here and there and new stock arriving over a half year or so. So at first I wanted to use the tsop package with the 1.27 mm pitch. But sold out. Then the tssop package with the .65 mm pitch. There was some stock left, but I gave it a week, not sure I could do .65mm, it looks all very cool under the microscope but when you realize how tiny it really is... So after that week thinking about it that stock was gone, and so now I am left with the Qfn package or wait a half year... Ok, let me think about that... 🙂
Definitely give it a go if it’s something you’re interested in I just solder them now don’t use paste no more I use best 60/40 from AliExpress it’s cheap and good definitely give soldering a go 😀
No never happened me but maybe its possible if the chip is not pressed flat to the board.next time i will use a louis rossman amount of flux thanks for the tip:)
@@Jungleju1ce He mentioned the internal bridges. For example a data line bridges with big ground pad. This type of bridges you can't see, but a good quality flux don't let to be happen. After you can do diode measures if you know what is the data lines.
sir iam a biomedical technician from srilanka , can you please tell us whats the flux that you use , can you give a link to buy it, also sir to apply the flux and solder paste you use a special tool please be kind enough to give a link to buy it also , please show us your tools from a video and how to use it
Hi the flux i get cheap from aliexpress i get most things from this website thank for you comment www.aliexpress.com/item/1005003936621625.html?spm=a2g0o.order_list.0.0.25ea1802ZCWExO
