Conductor / Copper thickness

The following table shows the maximum allowed conductor trace width with the minimum conductor trace spacing, depending on the respective copper thickness.

Inner layers

Copper thickness min. conductor trace width / -spacing min. annular ring
Copper thickness12µmmin. conductor trace width / -spacing75µmmin. annular ring100µm
Copper thickness18µmmin. conductor trace width / -spacing100µmmin. annular ring100µm
Copper thickness35µmmin. conductor trace width / -spacing100µmmin. annular ring100µm
Copper thickness70µmmin. conductor trace width / -spacing175µmmin. annular ring175µm
Copper thickness105µmmin. conductor trace width / -spacing250µmmin. annular ring250µm
Copper thickness140µmmin. conductor trace width / -spacing300µmmin. annular ring300µm

Outer layers

Final copper* min. conductor trace width / -spacing min. annular ring
Final copper*30µm**min. conductor trace width / -spacing75µmmin. annular ring75µm
Final copper*35µmmin. conductor trace width / -spacing100µmmin. annular ring100µm
Final copper*70µmmin. conductor trace width / -spacing175µmmin. annular ring175µm
Final copper*105µmmin. conductor trace width / -spacing250µmmin. annular ring250µm
Final copper*140µmmin. conductor trace width / -spacing300µmmin. annular ring300µm
Final copper*210µmmin. conductor trace width / -spacing500µmmin. annular ring500µm
Final copper*400µm**min. conductor trace width / -spacing900µmmin. annular ring900µm

* After electroplating (approx.) / ** only on request / prior consultation