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Using Eagle 7.2.0 Lite, how do I know if a new part  has plated through holes? 9as opposed to pads top and bottom).T

Former Member

Hi

A new user.

Using Eagle 7.2.0 Lite, how do I know if a new part  has plated through holes? (as opposed to pads top and bottom).

Thanks

  • 0

    On 10/03/15 15:34, Tony Wright wrote:

    Hi

    A new user.

    Using Eagle 7.2.0 Lite, how do I know if a new part  has plated through

    holes? (as opposed to pads top and bottom).

    Thanks

     

    That's a meaningless question.

     

    Parts don't have "plated-through" anything. Parts have symbols and

    packages. Packages have pads, which can be either SMD or through-hole.

    The latter have a drill size and a restring (and elongation), from which

    Eagle produces the necessary data for plating and drilling your PCB.

     

    No mention of plated through holes there.

     

    Now, what you do with your PCB data afterwards is up to you. If you send

    it to a professional PCB fab, they will probably through-plate all the

    holes unless you tell them otherwise.

     

     

  • 0

    Plated through holes are controlled by the rules of the board house.

    Most commonly the board house will plate the hole if there is copper lands

    on both sides of the board at the position of the drill.

     

    If there is copper only on one side or neither side, the hole will be non

    plated. That drilling occurs later in the manufacturing process. It pays to

    learn the sequence of events in the manufacturer of a PCB then you can see

    what is controlled by the CAD and what is controlled by the manufacturing

    process.

     

    You normally have to ask for a non plated hole if there is copper both

    sides.

    The board house will tell you how they wish to be advised of these needs.

     

    HTH

    Warren

     

    --

    Web access to CadSoft support forums at www.eaglecentral.ca.  Where the CadSoft EAGLE community meets.

     

  • 0 in reply to autodeskguest

    The eagle primitives 'via' and 'pad' are always ment to be plated. For non

    plated holes, there is the 'hole' primitive.

    For course if you drill your own vias and pads, you have to make sure they

    are connected at both top and bottom. If its a pad, it may be difficult to

    actually solder the pin on both sides, but there is no such thing as a

    bottom only pad in eagle. Maybe there should be since farnell/cadsoft does

    seem to target the low entry users..

     

    To keep those types of drills separated, I made my own CAM that creates

    separate drillfiles for nonplated (holes) and plated (vias/pads). For some

    reason eagle puts up a warning when I do that, but its very natural for me

    to separate them and manufacturing house never complained.