... quality with competitive price 3.ISO,UL,RoHs,SGS Electronic Timer PCB1.We have over 10 years experience in PCB filed2 ... >1012 Ω Normal14Electric strength>1.3kv/mm15S/M abrasion>6H16Thermal stress288°C 20Sec17Test Voltage50-300V18Min. blind/buried via0.15mm (6mil)19Surface FinishedHAL ... -TG,Teflon,Rogers,Ceramics,Aluminium, Copper base 4 Layer Electronic Timer PCB Board