Why and When to Use Reflow Soldering?

As a beginner, you may confuse why you would use reflow soldering, what are the pros and cons of this technique, and when would you favor it over other techniques? This article will explain them one by one in easy words. 

Reflow soldering techniques are often a very good choice for surface mount components. While most surface-mount boards can be assembled manually using a soldering iron and solder wire, the process is slow and the resultant boards can be unreliable. Modern PCB assembly facilities use reflow soldering exclusively for large-scale production, with pick and place machines putting the components onto the boards, which have had solder paste applied to the pads, and the whole process is automated.
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