Double Side Pcb for Microphone of Cell Phone.

Layer count

***4

Min trace width/space

4mil / 4mil ( 0.1mm / 0.1mm )

Thickness of inner copper

1/3oz, 1/2oz, 1oz, 2oz, 3oz

Range of total thickness

0.**3.2mm

Range of tolerance of total thickness

Thickness< 0.5mm********- ±0.*6mm

Thickness≥0.**1.0mm****- ±*0%

Thickness>1.2mm*********- ±0.**7mm

Min diameter of finished hole

0.*0mm

Min drilling diameter

0.*0mm

Thickness of solder mask

Trace End:  0.**1.2mil

Trace Corner; ≥0.2mil

Hardness of solder mask

6H

Min solder mask dam

4.0mil(0.1mm)

Max solder mask plug hole diameter

0.5mm

V-cut angle

 *0°, *5°, *0°

Range of bevel ange

*0°**0°

Warp and twist

≤0.*5%

Surface treatment

HAL/HAL lead free, OSP, ENIG

Type of ccl material

FR*4, AL, TG **0, TG**0,Halogen free.