How to solder through-hole components – another teaching moment from Digi-Key

30 April 2020

Do you have everything you need to solder, but are unsure exactly how to go about it? This Another Teaching Moment video demonstrates the basic process of through-hole soldering to help you get started on small-scale projects. You will need a soldering iron or station, flux core solder and safety glasses. You may also use a fume extractor to remove potentially harmful flux fumes if your room is not well ventilated.

Safety is of the utmost importance, so put on safety glasses and turn on a fume extractor while your soldering iron heats up. Then follow the step-by-step instructions in this video tutorial to learn how to solder through-hole electronic components, from cleaning the tip before you start to removing flux residue from your circuit board when you are finished. The video highlights a good “chocolate kiss” solder joint and explains what to do if you end up with a bad solder joint, including those with no connection to the pad, no connection to the post, a short or bridge between two posts, and too much or not enough solder. This video will also teach you when to use a flux pen, a flux remover pen, solder wick and tip tinning paste.

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