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Pretty simple if the board you are putting it on is well solder masked.
Run down to Staples and get a package of Tac 'n Stik. Pity, that package is 2 oz and you'll need about a milligram. The two buck package will last you about ten lifetimes. OK, now take a really tiny little ball of the stuff - less than a millimeter in diameter - and stick it on the circuit board right where the part goes. Squish the part down onto the blue stuff. The blue stuff won't hold it all that well, so you need to be a little careful, but you do gotta squish it good. With your magnifier and an x-acto knife or dentist's pick, gently nudge the part around until all the pins are lined up on their pads. This is the hardest part -- be patient. Timidly solder one corner pin. Take your magnifying glass and recheck all the pins. Move the part back so it's lined up again. Solder the opposite corner - this is the moment of truth. Take your magnifier, and again check all the pins. Check them very carefully now, there is no turning back. Take your soldering iron and run a big blob of solder across each row of pins. Be sure to give plenty of time for the first row to cool before you do the second. If you have a part with a bazillion pins, you may want to do a section at a time to avoid overheating the part. For something like an AD9850 with only a couple dozen pins, this isn't necessary. Now take your solder wick and suck all the solder out. You need good quality solder wick for this operation. The cheap stuff seems to need a ton of heat. Take your magnifier yet again and carefully inspect each pin. (Needs to be a GOOD magnifier). You should have no little hairs of solder between the pins, and a thin film of solder under each pin. Solder paste is probably better, but it's breathtakingly expensive and has a very short shelf life. Plus, you gotta use a heat gun which will heat a large section of the board, potentially removing other stuff you already mounted. This takes a lot longer to describe than to actually do. ... "Tom Kreyche" wrote in message news:zpgqb.86794$9E1.437033@attbi_s52... I can't avoid it anymore! I have an IC in SSOP package that I want to use. Does anyone have tips on how to do it or maybe this is on a FAQ someplace. thanks, Tom |