Bicheng Enterprise Limited
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  Design For Manufacture
 
a Inner Layer
 
b Laminating
 
c Drill
 
d Etching
 
e Outer Layer
 
f Solder Mask
 
f Silkscreen
 
g Carbon Ink
 
pcb Peelable Mask
 
pcb Surface Finish
 
pcb Contour
 
pcb Special Tolerance
   
   
   
   
   

 

 

 
 
Serial NO. Procedure Item Manufacturing capability
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 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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