2 Layers FR4 PCB

FR-4 material, which is the abbreviation of glass fiber cloth, is a kind of circuit board raw material and base material, the code name of the flame-resistant material grade, which means that the resin material must be able to self-extinguish after burning. A material specification. Most commonly used in PCB (printed circuit board), general single, double-sided and multi-layer PCB circuit boards are made of this! Because of its high strength and flame retardancy, most circuit boards will choose FR-4 as the substrate.