Professional Hand Soldering Training - SMT, The Art of Drag Soldering and Fine-Pitch QFP

By John Gammel, MIT (Master IPC Trainer. Circuit Technology Inc. Surface Mount Technology

[LeftyLuc]

If you continue to drag the tip of the soldering iron until it is fully off of the IC instead of pulling it away from the IC you can prevent bridging from occurring at the last couple pins like it did at 1:22, 2:07, 2:25, 3:14, ect. The trick is to keep moving at a uniform and steady speed until you break contact with the final pin.

[brittanychristian]

This is so satisfying to watch. I was a welder in the Navy years ago and thought soldering would be too small scale/precision work for me. I think I'll be buying a soldering iron now.

[jacquylenoir]

Cela fait plaisir de voir quelqu'un qui sait enfin souder des CMS sans abimer les traces, merci, c'est tellement rare un vrai pro

[harrymason]

Nice job, soldering. Good use of flux. Nice the way you keep it both clean and fluxed. Lotta skill there. I hate watching videos when they use poor soldering skills. You're excellent.

[paulmoffat]

I've hand soldered boards that had SMT parts with pitches as fine as 0.8mm - assembled the first go of prototype boards - all worked properly the first time.
One thing that I did, on larger QFPs, was to tack solder the corner pins to keep the part from shifting when soldering the main body. Also works for PLCC components.

[ВпсяПупкин]

Круто! Глобализация - это хорошо, все люди, во всем мире, между собой могут делиться своими мыслями и опытом, государственные границы теперь не имеют роли в передаче информации, невероятное 30 лет назад и повседневное сегодня!

[dappa]

you're a pro. You corrected so effortlessly

[Pozydrive]

this is such an impressive display of skill with the iron.

[henrikevertsson]

Good eye sight is of essence. I'm 61 and can't do anything without glasses nowadays. Looking glasses usually are too weak for me, so I have found a neat solution.
A store nearby sells reading glasses for the equivalent of $2. I'm using three glasses that I have taped together, on top of each other. Two +3 and one +2.5, that is around 9. The advantage is cheapness and that the "looking glass" always is directed to the right spot in front of my face. It's almost like having a microscope on the tip of the nose.

[deadbluesky]

Well this is pretty easy, what he dosent tell is how to pin the ic in place before he start so it wont move when you solder it for those kind of ic, and what kind of tin and flux you use and also the temperature of you iron !! If this is a solder training well you miss too much thing for the beginner... just saying

[ReginatorNet]

No unnecessary talking, just action - Nice!!!

[shake]

is it only me who got relax while watching a professional soldering?

[zaqwertyfish]

Nice. Getting a little refresher on some soldering techniques for a possible new job. I've done a lot of aerospace work... some pretty challenging and fun stuff.

[cwbh]

you skipped the step of soldering a few tabs to hold it in place, that could confuse a beginner for sure!

[jimmythepowerful]

You telepathic communication skills are incredible...

[phenomkrumper]

I always wondered how they did little ICs like this on boards. Wow, so neat. Amazing how the solder just hits the pins precisely!..

[BitsofSkin]

Very nice!!

Looks like its been done in an oven man..

Perfect.

[dsalpha]

I don't know why but i find this video very relaxing to watch.

[schautamatic]

Nice work! 👍🏼 Back in the 386 Heyday when I worked at Intel, the 25-mil PQFP was being developed. All the pads were printed with solder paste, the PQFP was placed, then IR or vapor phase solder reflow finished the job...sometimes with those annoying solder bridges to deal with. 🤦🏻‍♂️ I noticed that every time you made your solder pass, the last three leads always bridged and needed rework. I wonder if having a fine-thread solder wick at the end of—and and in-line with—your pass would eliminate that bridging tendency. Wouldn’t need any rework that way! 😀

[pauligrossinoz]

I suspect that this isn't your first time ...😆

Bloody good job! 👍