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"Standard" via definition

Grubi

If I set via "standard" definition or padstack like this

Drill hole circle 0.300mm / Regular pad circle 0.700mm / Thermal Relief, AntiPad are all NULL.

Soldermask TOP and BOTTOM are also NULL. Symbol size is 1mm.

Min. track/track and track/pad consraints are set to 0.150mm

Is there some problems I can expect. Just notice on an old design, some of the vias have soldermask, but other don't. Have same padstack, but I think those that don't have solder mask was from "copy/paste" type. Any explanation on this? Is there place in the manual where this is discussed in detail?

Thanks :)

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  • ScottCad
    The sizes you choose should be ok but keep in mind if you want to have the via copper exposed on the board then you need to add a soldermask to the padstack for the top and bottom layers. Some board houses like to have soldermask covering all via's on a board as opposed to leaving the via copper visible. I have seen this is common place on PCB's that are made in Asia. You might consider adding some manufacturing notes to your fab drawing so the board house makes for you what you need. Scott
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  • ScottCad
    The sizes you choose should be ok but keep in mind if you want to have the via copper exposed on the board then you need to add a soldermask to the padstack for the top and bottom layers. Some board houses like to have soldermask covering all via's on a board as opposed to leaving the via copper visible. I have seen this is common place on PCB's that are made in Asia. You might consider adding some manufacturing notes to your fab drawing so the board house makes for you what you need. Scott
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