Why one pad is bigger than the other?

Hello there!

Thanks for reaching us! Indeed, this part doesn't seem to be up to our latest standards. We have contacted our team about this, and we shall get back to you once we have a reply from them.

​Hello again!

The problem you experienced was caused by an outdated automation script that generated an outdated library for this component. Fortunately, our team has updated the library using the most recent datasheet. You can now download it again from the link provided below and use it into your designs.

https://www.snapeda.com/parts/3-1879497-9/TE+Connectivity/view-part/

Let me know if you have any questions.