Letters: Drag-soldering small pitch TQFP packages is easy
Firstly , let me thank you again for my free coupon . My item which I ordered with the coupon arrived today.
You sent me a follow up mail saying to send a picture of my finished board to get a replacement free coupon.
Thats not too easy for me to do because I didnt get a free PCB with the coupon, I chose instead the practice chips
which i figured was the best option for my first try. You see , I am in the older age group . I am in my 60’s and retired from work now . The problem as you age is your eye sight starts to fail and your hands get very shaky. I am ok with
through hole components and DIL chips but I worried that SMD’s such as SOIC and worse still TQFP might be beyond my capabilities. Thats why I decided the practice chips might be a good option .
While I waited for the chips to arrive I designed a small PCB on Kicad that would give me the footprints I needed for SMD devices and I had Seeed Studio make the boards for me ( I have attached pictures of the board ).
I have looked at the chips and although most of them are either the wrong footprint for my board or the pins were a bit mangled in the post but I was able to use an SOIC and a 64pin TQFP which are the sizes I most wanted to use.
I couldnt believe how easily they went on the board. Instead of trying to solder one pin at a time I followed a you tube video which showed how to do it by applying flux and then running the tinned iron allong all the pins . I didnt even have to use solder wick as there were no bridges at all. So now thanks to your coupon I am no longer worried about soldering SMDs .
This entry was posted in mail and tagged drag soldering, mail, TQFP.