astra77ASTRA77 Website Resmi Sekolah ini sebagai sarana interaktif komunikasi Civitas Akademika tak terbatas waktu dan tempatThe ASTRA MT77 from Isola Group is a PCB Laminate with a dielectric constant (Dk) 3 that is stable between -40°C and +140°C. This laminate has a Glass Transition Temperature (Tg) of