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Topic: How does one begin SMD soldering? (Read 5 times) previous topic - next topic


Dec 29, 2012, 11:14 am Last Edit: Dec 29, 2012, 11:16 am by dc42 Reason: 1
I use a flux pen, solder paste and a hotplate. See http://www.hobbytronics.co.uk/hotplate-smd-soldering. The trick is to get just the right amount of solder paste on the pads for ICs, so that surface tension pulls all the solder on to the pads, leaving no solder bridges. I find that warming the solder paste first helps. If you do get solder bridges, I use desolder braid to remove them; but I don't put solder on the desolder braid as shown in then tutorial, I run the flux pen over the braid instead.
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One thing I forgot to mention is that you can make a cheap "Hot Air Station" from a Radio Shack desoldering tool and an aquarium air pump.  The desoldering tool has a heater like a soldering iron, a hollow tip, and a squeeze bulb to apply suction.  Inside the hollow tip is a chamber to catch the solder.  You pack the chamber with copper wire to provide a large surface area to heat air and replace the squeeze bulb with a cheap aquarium air pump.  The result is a stream of hot air coming out the tip.
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I have my stencils lasercut and use soldering paste, a steady hand, and a toaster oven. This method is covered all over the web and works well if your only doing a few.

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