Hello,
is there some way to make via between two layers without generating
circle in tStop and bStop layers?
Regards
Hejduk
Vojtech Hejduk schrieb:
Hello,is there some way to make via between two layers without generating circle in tStop and bStop layers? Regards Hejduk
From http://www.cadsoft.de/faq.htm.en#06062601
12. Vias and Solder Stop Mask - How Does it Work?
EAGLE generates by default a solder stop mask for each Via (also for
Pads and SMDs, of course). This means the Via is free of coating
material. The solder stop mask is drawn automatically in the layers 29,
tStop, for the top side and 30, bStop, for the bottom side. The size of
the solder stop mask can be determined in the Design Rule's Mask
settings. See the values for Stop. By default the value is fixed to 4
mils. Minimum and Maximum are set to the same values therefore.
If you want to have a diameter-dependent mask you could also define a
certain percentage. The resulting value can be limited by a minimum and
a maximum.
In order to have vias coated, EAGLE allows you to set the solder stop
Limit in the Design Rules' Mask tab. Here you can define a value which
is dependent on the drill diameter of the via. Let's assume you would
like to set the Limit to 0.012 inch. Now all vias in the layout up to a
drill diameter of 0.012 inch will be covered with coating material. All
those vias that have bigger drills will stay uncovered.
In case you want to have some smaller drilled vias uncovered, you have
the possibility to select vias out of those that are covered in order to
uncover them. This can be done with the command CHANGE STOP ON | OFF in
the Layout Editor. This also works for groups.
By the way: It is allowed to draw areas that should remain free of
coating material in the tStop/bStop layers directly. But it is not
possible to delete certain automatically generated solder stop symbols
there. You have to deal with Limit and CHANGE STOP ON | OFF instead.
HTH
--
Mit freundlichen Gruessen / Best regards
Richard Hammerl
CadSoft Support -- hotline@cadsoft.de
FAQ: http://www.cadsoft.de/faq.htm
