5 pieces prototype pcbs follow these rules:
4 layer, FR-4 ,Tg140,
Thickness 1.6mm
finished copper thickness:outer layers 1OZ
inner layers HOZ
green solder mask, white silkscreen.HASL
The following specifications define the requirements for 4 layers pcb layout rules:
Track size
Minimum track width:5mil
Minimum track spacing:5mil
Pad size
Minimum pth hole pad size: hole size+20mil
Minimum via hole pad size: hole size+12mil
Minimum pad spacing :6mil
minimum soldermask openning pad
sapcing to ensure the dam:8mil
Hole size
Max npth hole size:6.0mm
Minimum npth hole size:0.3mm
Minimum slot size:0.8mm
*Please note that when you add one product to shopping cart,it means that you can get 5 pieces pcbs.not 1 piece.
