What Makes FR-4 the Ultimate Standard for Custom PCB Fabrication?
FR-4 represents a composite thermoset plastic laminate, specifically a flame-retardant epoxy resin reinforced with woven fiberglass cloth, which currently supports 80% of global rigid PCB volume. The material achieves a dielectric constant of 4.3 to 4.5 at 1 MHz, ensuring predictable signal propagation for modern electronics. Standard grades handle operating temperatures up to 130 degrees […]
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