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ABOUT US
Process capability
ITEM
PROJECT
JUDGMENT CRITERIA
Process capability
BATCH
SAMPLE
1
Material type
/
CEM-3; FR4 Tg140: FR4 Tg150: FR4 Tg170 above: read free
Halogen free; PTFE. High frequency and high-speed materials
2
Number of layers
Finished product specifications
≤32
46
3
Plate thickness
Inner layer specifications
Finished product specifications
min:0.063mm T/T
min:0.05mm T/T
0.30-3.2mm
3.5mm
4
POFV(Electroplating+vacuum resin plug hole)
Depressed
0
0
5
Interlayer alignment
Pressing
+/-63um
+/-50um
6
Pth Drill to pattern
Minimum specification of finished product
>50*50mm
30*50mm
7
Shipping size
Minimum specification of working draft 4L
Minimum specification of working draft 6L-14L
Minimum specification of work draft>14L
≥24.5mil
≥5.5mil
≥7mil
6mil
5mil
4mil
8
Mechanical drilling hole diameter
Minimum aperture
6mil
4mil
9
Position tolerance
Hole edge to hole edge
Hole edge to PAD
PAD to PAD
PAD to forming edge
Minimum specification of finished product
Minimum specification of finished product
Minimum specification of finished product
Minimum specification of finished product
>8mil
>6mil
>6mil
>8mil
6mil
5mil
5mil
6mil
10
Aspect ratio
Through-hole
Semi finished product specifications
≤14:1
14:1
11
Through-hole copper
Line spacing>75um
Line spacing>75um
Semi finished product specifications
Semi finished product specifications
≤25um
≤20un
35um
30um
12
Finished line width
Minimum specification of finished product (outer layer)
Minimum specification of finished product (inner layer)
≥63um
≥50um
50um
38um
13
Finished product line spacing
Minimum specification of finished product (outer layer)
Minimum specification of finished product (inner layer)
≥63um
≥50um
50um
38um
14
Impedance value tolerance requirement (impedance line width<89um)
Minimum specification of finished product
≥±7%
± 5%
15
SMD minimum PITCH
Minimum specification of finished product
≥8mn
6mi(FLY PROBE)
16
Microvia Annular ring
Minimum specification for workpapers
≥23.5mil
3.0mil
17
18
Aperture plug hole
Minimum specification for working draft (anti welding cold hole)
Minimum working specification (vacuum resin plug hole)
≤0.5mm
≤23.5mil
0.6mm
0.8mm
19
Solder Dam
Green oil
Other color oils
width
width
>3.0mil
>4.0mil
2.5mil
3.5mil
20
Minimize Gold Pad Size
Minimum specification of finished product
≥28mil
6mil
21
Surface Treatment
Tin spraying thickness
Hua Jin Jin Hou
Gold nickel thickness
OSP thickness
Minimum specification of finished product
Minimum specification of finished product
Minimum specification of finished product
Minimum specification of finished product
≤35um
0.03-0.08um
3-7um
0.2-0.4um
40un
0.1um
8um
0.5um
Jiangxi Business Department：
Tel：+86 0796 8616 983
Email：wlgpcb@welgaopcb.com
Address: No. 1, Yongjin Avenue, Jinggangshan Economic and Technological Development Zone, Ji'an City, Jiangxi Province
Huizhou Business Department：
Thailand Business Department：
Tel：0752-6237000
Email：ad-m@welgaopcb.com
Address: No. 116, Jianshe Road, Longyuan Industrial Park, Mabei Town, Boluo County, Huizhou City, Guangdong Province
Official WeChat (Service Number)
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Jiangxi Welgao Electronics Co.,Ltd 赣ICP备2023012175号 Technical support：xhkj
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Official WeChat (subscription number)
Tel：063 1932 686
Email：wm.song@welgaopcb.com Address: Nong Nam Som, Uthai, Phra Nakhon Si Ayutthaya 13210
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