... 0.1mm Min. Finished Diameter of PTH Hole: 0.1mm Max. Board Thickness/Hole Ratio: 12:1 Min. Solder Mask Bridge ... fixture test, impedance test, solderability test, thermal shock test, hole resistance test, and micor metallographic section analysis, etc. Wrap ... assembly)Prototype building, No Minimum quantity RequiredReliable PartsSurface mount, through hole, BGA, QFP, QFN …ROHS compliant and lead-free ...