Ultrathin 40 micron laminate is glass-reinforced and does not have thermo-mechanical mismatch issues commonly associated with unreinforced films. Has a glass-transition temperature (Tg), above 170C. Young's modulus (Tensile Modulus) and thermal expansion coefficient are said to be similar to high-Tg systems.
Isola Group, www.isola-group.com
Circuit Foil, www.circuitfoil.com