Drilling
Description
Standard
Advance
Description
a
Min. Diameter of Drilling Hole
0.20 ( 8mil )
0.15 ( 6 mil )
b
Min Diameter of Annular Ring
a + 0.20
a + 8 mil
a + 0.15
a + 6 mil
c
Diameter of Finished Hole
0.15 ( 6 mil )
0.10 ( 4 mil )
d
Internal Ground / Signal Clearance
150 ( 6 mil )
100 ( 4 mil )
e
Min. Diameter of Blind Via (Finished)
0.10 ( 4 mil
0.05 (2 mil )
f
Min. Diameter of Buried Via (Finished)
0.10 ( 4 mil )
0.05 (2 mil )
g
Max. Hole Diameter & Board Thickness for Filled Via with PSR
Diameter
Thickness
0.6 ( 24 mil)
2.0 mm (80 mil)
h
Max. Hole Diameter & Board Thickness for Filled & Plated Via in Pad
Diameter
Thickness
0.5 ( 20 mil )
2.0 mm ( 80 mil )
...Throwing Power
     
...Aspect Ratio