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Design guidelines
Pattern classes represent the PCB complexity. Higher class, may result in higher production cost.
Guide
Pattern classes
M5
M6
M7
M8
M9
Annular ring, hole -pattern outer layer pad
>200
>165
>140
>125
>100
A
Annularring, hole -pattern inner layer pad
>150
>140
>112
>100
>75
B
Trackwidth -inner -outerlayer
>200
>150
>125
>100
>75
C
Insulation inner -outerlayer
>200
>150
>125
>100
>75
D
Insulation -innerlayer to different net
>355
>300
>250
>200
>190
E
Clearance soldermask -soldersurface
>100
>90
>75
>50
>50
F
Pattern classes, reference views:
