Can Standard FR-4 Handle High-Temperature Circuit Board Applications?
Standard FR-4 performance plateaus at 130 degrees Celsius, where resin softens, causing trace deformation and 15 percent increase in Z-axis expansion. Operating beyond this glass transition threshold leads to via barrel fatigue within 500 thermal cycles, necessitating material upgrades for high-reliability industrial hardware. PCBMASTER technical data confirms that standard epoxy systems exhibit dielectric constant instability […]
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