How wide are the pins? That comes into play more than the pitch of the pins.
Like in this tutorial: http://skywired.net/blog/tutorials/how-to-solder-qfp-tssop-soic-surface-mount/. Or this video: http://arduino.cc/forum/index.php/topic,112531.0.html. The method proposed in the schmartboard promo video is clearly inferior.
I did not write "solder paste". I wrote "flux". The solder paste method is more efficient as well but a completely different story. I have no clue how expensive the schmart board is and I do not use break out boards.
Usually I design my circuits in Eagle and etch the whole stuff or let it manufacture. So I have no clue about prices for break out boards.
I always buy the cheapest flux that say "lead free" and "no clean". And yes, this stuff is always pretty expensive. But it last pretty very long. At least for me.The approach is to soak everything with flux.Then put solder on the tip and smear it over the pins. Surface tension will suck the solder in.In order for this to work the tip must be sufficiently big otherwise it does not carry enough solder and it will cool down to fast.The only issue is that this approach tends to create solder bridges. Thus as a final step check for solder bridges and if you find any apply braid.This yields consistently good results and is much simpler than it sounds. After my second SMD chip I got the hang of it and I will not use any other method any more (except for solder paste + oven).
The solder is on the tip already in that video.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16