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Mounting holes and mechanical parts

LOR75 4 months ago

Hello

I'm a newbie in PCB design, I'm using PCB Editor 16.3 and I don't know what's the best way to organize mounting holes and mechanical parts:

- Put them in the orcad schematic so they are considered as components with a complete footprint.

- Leave them out of the schematic (so they are not included in the netlist). In this way I can change them without change the schematic but I don't know how to put parts that are not included in the schematic.

What are advantages and disadvantages of both solutions?

Best regards.

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0 DS1995 4 months ago

Hi,

You need to make the mechanical parts and its information as a part of the schematic. As part of few good practices in PCB design ,it is considered to keep the schematic and board file in sync always.

1. If you have a footprint for the mechanical part, then simply place this part in Orcad schematic and add the property CLASS=MECHANICAL and it will be included in the netlist. (Make sure that Class=Yes is present in the component definition section of the allegro.cfg file).

2.To include all the mechanical part information in schematic, I found a detailed solution in the user guide "Including mechanical parts and assemblies in standard CIS BOM" in OrCAD CIS User Guide 17.4-2019

Below links helped me understand the process better -

Manual link - https://support.cadence.com/apex/techpubDocViewerPage?xmlName=cisug.xml&title=OrCAD%20CIS%20User%20Guide%20--%20Finalizing%20and%20Documenting%20Designs%20-%20Including%20mechanical%20parts%20and%20assemblies%20in%20standard%20CIS%20BOM&hash=pgfId-1062210&c_version=17.4-2019&path=cisug/cisug17.4-2019/finalize.html#pgfId-1062210

How can I transfer a mechanical part without pins to the Allegro PCB Editor netlist?
URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000tTM4EAM

How to configure mechanical tables in a database
URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nXzDEAU
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0 DS1995 4 months ago

Hi,

You need to make the mechanical parts and its information as a part of the schematic. As part of few good practices in PCB design ,it is considered to keep the schematic and board file in sync always.

1. If you have a footprint for the mechanical part, then simply place this part in Orcad schematic and add the property CLASS=MECHANICAL and it will be included in the netlist. (Make sure that Class=Yes is present in the component definition section of the allegro.cfg file).

2.To include all the mechanical part information in schematic, I found a detailed solution in the user guide "Including mechanical parts and assemblies in standard CIS BOM" in OrCAD CIS User Guide 17.4-2019

Below links helped me understand the process better -

Manual link - https://support.cadence.com/apex/techpubDocViewerPage?xmlName=cisug.xml&title=OrCAD%20CIS%20User%20Guide%20--%20Finalizing%20and%20Documenting%20Designs%20-%20Including%20mechanical%20parts%20and%20assemblies%20in%20standard%20CIS%20BOM&hash=pgfId-1062210&c_version=17.4-2019&path=cisug/cisug17.4-2019/finalize.html#pgfId-1062210

How can I transfer a mechanical part without pins to the Allegro PCB Editor netlist?
URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000tTM4EAM

How to configure mechanical tables in a database
URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nXzDEAU
Cancel
Up 0 Down

Cancel

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Mounting holes and mechanical parts

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