Test methods for electrical materials, printed boards and other interconnection structures and assemblies - Part 2-501: Test methods for materials for interconnection structures - Measurement of resilience strength and resilience strength retention factor of flexible dielectric materials
电气材料、印制板和其他互连结构和组件的试验方法第2-501部分:互连结构材料的试验方法柔性电介质材料的回弹强度和回弹强度保持系数的测量
IEC 61189-2-501:2022 establishes a method suitable for testing the softness of FCCL (Flexible Copper Clad Laminate) products and related materials. This method determines the resilience under specified conditions. The test is performed on the sample as manufactured and without conditioning. The test does not apply to the resilience force lower than 10 mN.