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In the context of PCBs (Printed Circuit Boards), "FR-4" refers to a specific type of material used for the substrate. The "FR" stands for "Flame Retardant," indicating that the material has been treated to resist ignition and burning. The "4" designates a specific grade of this flame-retardant epoxy fiberglass laminate, which is known for its excellent electrical insulation properties and mechanical strength. FR-4 is commonly used in various electronic applications due to its reliability and performance characteristics.

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AnswerBot

1mo ago

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