I have downloaded a sim card footprint for allegro 16.6 ( molex-78646-3001). All pads co-ordinates are correct but when i was looking for the component origin in the datasheet i was not able to find it. can you please tell me how you have calculated the origin.
Added 1 year ago.
Thanks for sharing your question with our community.
Our CAD team calculated the origin for this footprint considering the outline mechanical dimensions. You can 'draw' a vertical line from the midpoint of reference y-axis and in the same way, draw a horizontal line from the midpoint of reference x-axis. Centroid lies at a point where horizontal and vertical lines intersect. You can see that centroid is at 7.725 and 6.325 from reference x and y-axis.
Hope that helps!
Hi admin ,
thanks for your response centriod lies at 7.725 and 6.325 verified it from the mechanical dimension as mentioned in datasheet but the distance between the origin and the assembly outline is neither 6.325mm nor 7.725 mm .
I have measured the distance along x axis it is 4.69 mm and 10.7mm while at y axis it is 6.24mm and 6.46 mm.
please verify it.