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Autodesk EAGLE
EAGLE User Chat (English) Can part bodies overlap onto SMD pads?
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  • eagle
  • overlap
Related

Can part bodies overlap onto SMD pads?

edwardmatos
edwardmatos over 10 years ago

Hello, I suspect this is a question that has been asked and answered before, but my searches for the answer are made difficult by the large number of other discussion topics on other overlapping objects in Eagle. So, apologies in advance if you've already answered/discussed this before - I couldn't find the topic!

 

The screenshot below shows a large surface mount diode placed next to a through-hole mount connector. The body outlines of these components are shown in white and yellow lines:

 

image

The body outlines would suggest that the diode body is going to sit on the through hole pad, and the connector body is going to sit on the surface mount pad. My question is: is this a problem? The bodies themselves aren't close to each other, but are there any issues I should be wary of during reflow soldering or any other process during assembly that would make this a problem?

 

Clearly in this screenshot there is plenty of space to move the components further apart and avoid this overlap. I just thought I'd use this as clear example to illustrate my question.

 

Many thanks for any thoughts!

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  • autodeskguest
    0 autodeskguest over 10 years ago

    "Edward Matos"  skrev i nyhetsmeldingen:

    390857746.321422294731114.JavaMail.jive@flmspu-csapp-02.premierfarnell.com

    ...

    My question is: is this a problem?

     

    The short answer is; risk management. It may work or it may not work. You

    better make sure it works before you go on. But if you cant really verify

    it, why take the risk? But its clearly a physical fit problem, not a

    conductor problem. DRC will not complain unless D3 has some keepout area

    over the J3 square pad.

     

    When looking at the layout, I can't identify the connector (J3) you have

    used, but the big hole that far out on the edge looks suspicious.

     

     

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  • autodeskguest
    0 autodeskguest over 10 years ago

    "Edward Matos"  skrev i nyhetsmeldingen:

    390857746.321422294731114.JavaMail.jive@flmspu-csapp-02.premierfarnell.com

    ...

    My question is: is this a problem?

     

    The short answer is; risk management. It may work or it may not work. You

    better make sure it works before you go on. But if you cant really verify

    it, why take the risk? But its clearly a physical fit problem, not a

    conductor problem. DRC will not complain unless D3 has some keepout area

    over the J3 square pad.

     

    When looking at the layout, I can't identify the connector (J3) you have

    used, but the big hole that far out on the edge looks suspicious.

     

     

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