... fabrication service, for rigid or flexible, RoHScompliant, High Tg boards. All project comes with satisfaction guarantee ... 48mil 10 layer 1.60mm 60milMax Ratio of Board thickness and Via diameter22:1Min space0.075mm 3milMin ... ,Imm Tin,Imm Silver, OSP etc.Board materialFR-4 glass epoxy, FR4 High Tg, RoHS compliant; Aluminum, Rogers, ... SecondsFlammability94V-0Test voltage50-300V 6 layer high Tg PCB board