astra77The main parameters of Isola MT77: Tg=200 °C, Td=360 °C, Dk=3.00, Df=0.0017. Isola Astra MT77 is a low-loss FR-4 process-compatible PCB materialASTRA® MT77 laminate materials exhibit exceptional electrical properties which are very stable over a broad frequency and temperature range. Astra MT77 is suitable for many of ’s