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1.27MM Hole Spacing

autodeskguest

Hi,

 

I'm trying to create a new device (with a new package) that is a simple 25

pin header. The pin spacing, however, is 1.27MM with a 0.75MM diameter pin.

 

When creating holes of 0.75MM in diameter spaced 1.27MM apart, I'm able to

size the pads the way I want to, without them touching each other (more that

0.005" of spacing, 0.127MM) . However, when I go to the device view with an

image of the package, it shows the pads are now touching each other, which

means all the pins are shorted together.

 

Is there something I'm missing, maybe a setting for a min diameter for a

pad?

 

Thanks for any help,

Nick.

 

 

 

Parents

  • Klaus Schmidinger wrote:

    On 07/14/08 11:03, David Moodie wrote:

    ...

    It is the wonders of eagle's screwed up DRC

     

    ...

    Once more eagle should NEVER change anything the designer does without

    first asking if this is acceptable.

     

    ...

    Please get this sorted- check my design DO NOT CHANGE IT without

    asking me.

     

    The minimum restring requirement is something the board manufacturer

    will tell you. If, at any place, your board violates this requirement,

    this will typically cause the board manufacturer to get back to you

    and tell you that this board can't be manufactured at all, or needs

    to use a different manufacturing process, where the increased level

    of precision can be achieved.

     

    Yes... the board house runs a real design rule check

     

    Then they warn you of any failures

     

    Then after you explicitly approve the design they will go ahead.

     

    You still want to know how many and what marginal issues exist but you do

    not want them changed without approval.  So check is good change (without

    approval) is bad.

     

    cheers

     

    David

     

     

Reply

  • Klaus Schmidinger wrote:

    On 07/14/08 11:03, David Moodie wrote:

    ...

    It is the wonders of eagle's screwed up DRC

     

    ...

    Once more eagle should NEVER change anything the designer does without

    first asking if this is acceptable.

     

    ...

    Please get this sorted- check my design DO NOT CHANGE IT without

    asking me.

     

    The minimum restring requirement is something the board manufacturer

    will tell you. If, at any place, your board violates this requirement,

    this will typically cause the board manufacturer to get back to you

    and tell you that this board can't be manufactured at all, or needs

    to use a different manufacturing process, where the increased level

    of precision can be achieved.

     

    Yes... the board house runs a real design rule check

     

    Then they warn you of any failures

     

    Then after you explicitly approve the design they will go ahead.

     

    You still want to know how many and what marginal issues exist but you do

    not want them changed without approval.  So check is good change (without

    approval) is bad.

     

    cheers

     

    David

     

     

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