The Materials composition of rigid PCB
The rigid PCB has alternating layers of different materials laminated together by heat and adhesive to form a single object. So what materials is it mainly composed of? 1. Base material Base material is fiberglass. The most common sign of this fiberglass is "FR4". This rugged core gives the PCB rigidity and thickness. Cheaper PCB and perforated PCB will be made from other materials. For example, epoxy or phenolic resins that lack FR4 durability produce a very unpleasant odor when soldered, but at a much lower price. In addition, phenolic resins have a lower thermal decomposition temperature. If the soldering iron is held on the PCB for too long it will cause them to be layered, smoke, and scorched. This type of substrate is commonly found in low-end consumer electronics. 2. Copper The next layer is a thin copper foil laminated to the PCB with heat and adhesive. On a ordinary double sided PCB, copper is applied to both sides of the substrate. Only a PCB with co