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Additional copper region in EVM6437 component footprints

Anonymous
Anonymous
Other Parts Discussed in Thread: OPA361

Hi All,

 

I would like to ask a question on component footprints.

 

 

 

 

I have found several components have additional, unnecessary copper region with them in EVM6437 PCB file, and some of them are shown here.

 

What are the red regions (circled in yellow) locating within the component footprints? I checked each of the components’ data manual and found none of them requires additional copper thermal land (as those for PowerPAD), so I don’t see any reason why these additional copper regions are added.

 

These components with copper region between their pins are:

1

OPA361 amplifier

2

SN74LV1G32 logic gate

3

Resistor pack

 

[3 Resistor pack] is especially common and I haven’t noticed the existence of pins/conducting parts right below it, and for it why the copper region under footprint is added?

 

 

 

 

Thanks,

Zheng

  • 0
    TI__Guru 64410 points

    Zheng,

    Spectrum Digital designed this EVM and should have the knowledge as to "why" anything was done relative to the layout, including component footprints.

    Have you attempting to contact them for these questions?

  • Anonymous
    0 Anonymous

    Dear Brandon,

    I do not own EVM6437 myself (using one from a TI distributor provider instead). Are they supposed to answer my questions?

     

    Zheng

  • 0 in reply to Anonymous
    TI__Guru 64410 points

    I can certainly understand your dilemna, but what I can tell you is that TI does not have the answers to your questions regarding decisions made by Spectrum Digital on the layout of the EVM and the component footprints.

  • Anonymous
    0 Anonymous in reply to BrandonAzbell

    Dear Brandon,

    Spectrum Digital has answered the question.

    SpectrumDigital support said:

    This may be a remnant from the original design or early designs and may not be necessary.

     

    Thanks for the suggestion.

     

    Zheng