FR4 is a widely used, flame-retardant material, typically a composite of fiberglass and epoxy resin, that serves as a substrate for printed circuit boards (PCBs). It's popular due to its excellent electrical insulation properties, mechanical strength, and resistance to moisture and high temperatures, making it suitable for a broad range of electronic applications.
Free QuoteFR4 material is resin based, glass reinforced, 1oz copper coated, PCB laminate. FR2 material is similar in appearance, but uses laminated paper rather than glass. It is not quite so strong, but it is much less abrasive. This means much longer tool life and lower cost, making it an ideal choice for education.
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