Arlon 45NK PCB: worksheet boundaryArlon 45NK PCB: worksheet boundaryCommon length50 mm; hypothetical free specimensCTE difference15 minus 5 = 10 ppm/°CTemperature change100°C; differential change = 50 µmExcludedJoint geometry, constraints and fatigueEXAMPLE only. Numerical assumptions are not specifications of the named material.