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Pad to Hole Size

Pad to Hole Size
Pad to Hole Size	Production	Standard	Advanced	Emerging
Minimum Plated Hole Size * (Finished)	.010	.006	.004	< .004
Tolerance - Plated Hole Size	+/- .003	+/- .003	+/- .002	+/- .001
Minimum Inner Layer Pad 1 mil annular ring)	+.018 OVER F.H.S.	+.018 OVER F.H.S.	+ .012 OVER F.H.S.	+ .008 OVER F.H.S.
Mech. Min. Drill Hole Size	.010	.010	.006	< .006
Normal Finished Hole Size	.010	.008	.004	< .004
Plane Relief Diameter Over Drilled Hole	.024	.020	.016	.010
Minimum Outer Layer Pad (1 mil annular ring)	.012 OVER F.H.S.	.010 OVER F.H.S.	.008 OVER F.H.S.	.006 OVER F.H.S.
Min. Outer Non-Plated Hole to Metal	.010	.010	.006	< .006
Min. Inner Non-Plated Hole to Metal	.010	.010	.006	< .006
Max. Number holes/sq. in. (average over board)	200	250	300 +	500 +

* On particular sizes holes less than 50 mil in diameter.

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