1 The Silk Road was established during the Han Dynasty. 2  This trade route from China to Europe was a great source of wealth and luxury items. 3  Buddhism first came to China during this time. 4  Social status was very rigid.
Third, the outer shield affects common mode impedance of the cable outside much more than it actually affects common mode ingress. When the braid was removed, excitation power had to be significantly increased to maintain the same common mode current. This shows a higher common mode impedance of the shield.
Possible wicking of solder paste into the via. In the case of BGA rework, paste loss due to wicking into the via is a result of the localized thermal energy causing the LPI mask to lift on the short distance between the ball and via capture pads.