Design for manufacture(DFM)

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	Design For Manufacture

	Inner Layer

	Laminating

	Drill

	Etching

	Outer Layer

	Solder Mask

	Silkscreen

	Carbon Ink

	Peelable Mask

	Surface Finish

	Contour

	Special Tolerance

Serial NO.	Procedure	Item	Manufacturing capability
			Large volume （S<100 m2）	Middle volume （S<10 m2）	Prototype（S<1m2）
			Large volume （S<100 m2）	Middle volume （S<10 m2）	Prototype（S<1m2）
14	Laminating	Tolerance of laminate thickness	±10% PCB thick	±10% PCB thick	±8% PCB thick
15		Maximum laminate thickness	4.0mm	6.0mm	7.0mm
16		Laminate alignment accuracy	≤±5 mil	≤±4 mil	≤±4 mil
17	Drill (18um, 35um, 70um etc are finished copper. If not mentioned copper, finished 1oz is the default value )	Min.drill bit diameter	0.2 mm	0.2 mm	0.2 mm
18		Min.slot router diameter	0.60 mm	0.60 mm	0.60 mm
19		Min.tolerance of PTH slots	±0.15mm	±0.15mm	±0.1mm
20		Max.aspect ratio	1:08	1:12	1:12
21		Hole tolerance	±3mil	±3mil	±3mil
22		Space of via to via	6mil(same net)，12mil(different net)	6mil(same net)，14mil(different net)	4mil(same net)，12mil(different net)
23		Space of component hole to component hole	12mil(same net)，16mil(different net)	12mil(same net)，16mil(different net)	10mil(same net)，14mil(different net)
24	Etching	Min.width of etching logo	10mil(18um)，12 mil (35um)，12 mil(70um）	8mil(18um)，10mil(35um)，12 mil(70um）	6mil(18um)，8 mil(35um)，12mil(70um）
25	Etching	Etch factor	1.6-2.2	1.6-2.2	1.6-2.2
26	Outer layer(18um, 35um, 70um etc are finished copper. If not mentioned copper, finished 1oz is the default value )	Min.via pad diameter	20mil	16mil	16mil
27		Min.BGA pad diameter	12mil	12mil	10mil
28		Min.track and spacing	5/5mil(18um)	4/4mil(18um)	3/3.5mil(18um)
			5/5mil(35um)	4/4mil(35um)	3/4mil(35um)
			7/9mil(70um)	6/8mil(70um)	6/7mil(70um)
			9/11mil(105um)	8/10mil(105um)	8/9mil(105um)
			13/13mil(140um)	12/12mil(140um)	12/11mil(140um)
29		Minimum grid	10/10mil(35um)	8/8mil(35um)	4/8mil(35um)
30		Min.space (conductor to pad, pad to pad)	6mil(18um)	5mil(18um)	4mil(18um)
			6mil(35um)	5mil(35um)	4mil(35um)
			9mil(70um)	8mil(70um)	7mil(70um)
			11mil(105um)	10mil(105um)	9mil(105um)
			13mil(140um)	12mil(140um)	11mil(140um)

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