How to solder QFN SMD chip?

SMD stands for Surface Mount Device and they are components that you solder on the surface of a circuit board. Let me guide you through how to do SMD soldering with a soldering iron. (The most common method to solder these components is using an oven. Also called SMD Reflow Soldering)

QFN is a lead frame-based package which is also called CSP (Chip Scale Package) with the ability to view and contact leads after assembly. QFN packages typically use a copper lead frame for the die assembly and PCB interconnection. The QFN can have a single or a multiple rows of pins.

Soldering is a process in which two or more items are joined together by melting and putting a filler metal (solder) into the joint, the filler metal having a lower melting point than the adjoining metal. Unlike welding, soldering does not involve melting the work pieces.

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