Footprint Standards
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How to properly align 3D models
Footprints
Component Centers
Where they belongsbelong
Is it the same for everyone, or stored locally by user?
Define a width and length for crosshairs
Courtyards
Can silkscreen be outside the courtyard?
Set specific courtyard distance from component outline
Set specific widths for courtyard + component outline
How to import footprints from Ultralibrarian/snapEDA/etc.
Silkscreen/Top Overlay
General guidelines for silkscreen markings
Pin 1 dot - define radius, thickness, min distance from pads
Pads
Establish annular ring convention?
Should we include tolerance data?
How should we handle components which say they’re (for instance) 8-SOIC, but recommend a footprint that’s different from and not encompassed by the existing 8-SOIC footprint?
Standard convention for numbering mechanical mounting pads? (M?)?Proper procedure if you can’t find a good 3D model online
Guide on how to import footprints from Ultra Librarian/snapEDA/etc.
Symbol Standards
define standard convention for Mechanical pin designators (M? vs. MNT? or similar)
Component States
Proper procedure if you review a component then catch an issue
If “In production” part has a minor issue, do you bother tweaking it? And if so, do you return it to “in production” or just make it “Reviewed”
Do?
If this happens, and a new “reviewed” revision is created, do you have to roll back the previous revision to a draft?
Random
CL10A475KP8NNNC has two different components associated?
- ERJ-3GEY0R00V has two components associated
all prior approved revisions to drafts?
Component Parameters
Case/Package vs. Package parameters?