Back to overview

PCB Design Rules

AISLER's Design Rule Rating of your PCB

Our goal is to provide the optimal product for you. That's why we classify your PCB as "Simple" or "Complex", depending on the complexity of your design. Take a look at the table below to see which features make a board complex or simple. A board is classified as complex as soon as it has at least one complex feature. Each class is compatible with specific products that can be selected and ordered at the end of the ordering process.

feature Simple Complex
min. drill diameter ≥ 0.3 mm ≥ 0.2 mm
no. of layers 2 4
smallest necessary milling tool for cutouts 2.4 mm 1.6 mm
contains plated slots ✔️

General Specifications for all Products

The following design rules should be respected if you want to manufacture yor PCBs with us.


Symbol Description Value
a min. trace width 100μm
b min. trace spacing 100 μm
c min. trace pitch 200 μm
d min. spacing trace / trace 100 μm
e min. spacing trace / via-pad 100 μm
f min. spacing trace / ground plane 150 μm
g min. spacing trace / BGA-pad 100 μm
h min. spacing via-pad / via-pad 100 μm
i min. spacing via-pad / ground plane 150 μm
j min. spacing via-pad / BGA-pad 100 μm
k min. spacing ground plane / ground plane 200 μm
l min. spacing PCB edge / trace 300 μm
m min. spacing PCB edge / pad 300 μm
n min. spacing PCB edge / ground plane 300 μm
o min. spacing NPTH / BGA-pad 250 μm
p min. spacing NPTH / via-pad 250 μm
q min. spacing NPTH / trace 250 μm
r min. spacing NPTH / ground plane 250 μm
s min. annular ring 200 μm

Please note:

Please also note that these rules are the bare minimum that we support. If you can leave some safety margins in your design, the PCBs will be more likely to work the way you intended them to.