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Dewell  Manufacture Capabilites
No. Item Standard
1 Material FCCL(adhesive) Shengyi SF302:PI=0.5mil,1mil and 2mil;
Cu=0.33oz,0.5oz and 1oz
2 FCCL(adhesiveless) Panasonic R‐F775:PI=1mil and 2mil;
Cu=0.33oz, 0.5oz and 1oz
DuPont Pyralux AP:PI=1mil, 2mil and 3mil;
Cu=0.33oz, 0.5oz and 1oz
3 Coverlay Shengyi SF302C: 0515, 1025 and 2030
Taiflex FHK: 0515,1025 and 2035
4 Adhesive Taiflex BT: AD=10um, 25um and 40um
5 PI stiffener Taiflex MHK: PI=3mil, 5mil, 7mil and 9mil
6 3M 9460, 6677, 9458, 468
7 NO FLOW PP Ventec:VT‐47N
8 CCL ITEQ: IT‐180A; Shengyi: S1000‐2
9 Other CCL Arlon: 85N; Rogers: RO4000 series; Nelco:N4000‐13 series
10 Others Design software CAM350、PROTEL、PADS、POWERPCB、AUTOCAD、 GENESIS、ORCAD
11 Gerber format RS‐274‐D、RS‐274‐X
12 Drill format EXCELLON format
13 Layer 2‐10
14 Board thickness 0.2mm‐3.0mm
15 Tolerance of boad thickness
(thickness>1.0mm)
±10%
16 Tolerance of boad thickness
(thickness≤1.0mm)
±0.1mm
17 Min. board size 10mm*15mm
18 Max. board size 400mm*550mm
19 Impedance control tolerance Single‐ended: ±5Ω(≤50Ω),±10%(>50Ω)
Differential: ±5Ω(≤50Ω),±10%(>50Ω)
20 HDI /
21 Min. bow&twist 0.75%(symmetrical),2%(unsymmetrical)
22 Inner layer Min. line width/spacing (12,18um copper) 3.5/3.5mil (3.2/3.2mil)
23 Min. line width/spacing (35um copper) 4/4mil ( 3.5/3.5mil)
24 Min. line width/spacing (70um copper) 6/7mil (5.5/6.5mil)
25 Annular ring(blind via) 4mil
26 Max. copper thickness 2oz
27 Outer layer Min. line width/spacing (18um copper) 4/4mil (3.5/3.5mil)
28 Min. line width/spacing (35um copper) 4.5/4.5mil (4/4mil)
29 Min. line width/spacing (70um copper) 6/9mil (5.5/8.5mil)
30 Min. line width/spacing (105um copper) 10/13mil (9.5/12.5mil)
31 Min. line width/spacing
(18um copper,flex on the surface of board)
5/5mil (4.5/4.5mil)
32 Min. line width/spacing
(35um copper,flex on the surface of board)
5.5/6mil (5/5.5mil)
33 Min. line width/spacing
(70um copper,flex on the surface of board)
7.0/10mil (6.5/9.5mil)
34 Min. BGA pad size 12mil(8mil for electrical soft gold board)
35 Max. finished copper thickness 3oz
36 Drilling Blind via /
37 Max. buried via 0.4mm
38 Aspect ratio (mechanical drill) 10:1
39 Aspect ratio (laser drill) /
40 Min. distance between via and conductors 6mil (≤6layer)
  8mil(7~11layer)
  12mil(≥12layer)
42 Tolerance of non‐plated holes ±2mil(limited is +0/‐2mil or +2mil/‐0)
43 Solder mask and silk screen Solder mask color green,black,blue,red, matte green,white
44 Min. solder dam (copper≤1oz) 4mil(green, red and blue), 5mil(black and white)
45 Min. solder dam (copper2‐4oz) 8mil
46 Min. clearance 2.5mil (2.0mil)
47 Diameter of plugged hole /
48 Aspect ratio(hole plugged with non‐conductive
resin)
/
49 silk color white,yellow,black
50 Surface treatment Surface treatment HASL/LF HASL, ENIG, ENEPIG, Electrolytic Nickel Gold, Soft Gold, Hard Gold, Immersion silver, Immersion tin and OSP
51 Mixed surface treatment ENIG+OSP,ENIG+Gold finger,Electrical gold+ Gold fingers
52 Gold thickness (ENIG) 0.05‐0.10um
53 Nickel thickness (ENIG) 3‐8um
57 Hard gold thickness(leadless) 0.1‐1.5um
58 Hard gold thickness(including lead) 0.1‐4.0um
59 Electrolytic Nickel thickness ≥3um
60 Electrolytic Gold thickness 0.05‐0.10um
61 Immersion silver thickness 0.2‐0.4um
62 OSP thickness 0.1‐0.3um
63 Routing Tolerance of board outline ±4mil(exclude complicated board outline and cutout)

Dewell Electronics Co., Ltd. http://www.dewell-pcb.com  Phone: 86-180 2805 6029
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