Popular PCBs

PCBs are designed according to IPC -2221 , IPC -2222 , class II 
PCBs are fabricated accorcing to IPC 6012 class II 

Through Hole size :  Φ6 mil 
BGA size : 8 mil 
Half-hole plated :  Φ20 mil
Impedance :＞50Ω ±10% ; ≤50Ω ±5Ω
Gold finger , bevel edge : YES 
Testing : 4 wires low impedance testing 
TG : 135 / 140 / 155 
Outline edge plated : YES 


Improvement :

Outline shape : Irregular

Copper trace in width : 3 mil 
Hole distance : 36 mil 
Copper space : 3 mil 
Hole ring : 6 mil
PCB size 60 cm * 60 cm 
Solder mask openning : 3 mil 
Silkscreen text height : 3 mil
Inner cutout : 24 mil
V-cut : Across , jumper
V-cut degree : Any
Layers : 1-4 L
Board thickness : 0.8mm , 1.2 mm , 1.6 mm , 2.0 mm 


Copper weight :  outer 1 -2oz , inner 0.5-2 oz 


Tolerance :
Hole size : +/- 2 mil
Board thickness : +/- 10%