For a replacement for $R3$, which is a 10kΩ resistor, you can consider these typical options:

You can source a generic 10kΩ resistor from popular distributors like Digi-Key, Mouser, or LCSC. If you need a specific package or power rating, let me know, and I can help refine the recommendation further.

footprint is missing

Given that the footprint for R3 is missing, let's consider a standard SMD or through-hole package for the replacement. Here are a couple of common options:

You can select the appropriate package depending on the space available on your PCB and the assembly process (manual or automated). If you have further requirements or constraints, please let me know!

use smd package

For R3 using an SMD package, you can select either the 0603 or 0805 package, depending on the available space on your PCB and your assembly capabilities. Here's a brief overview of these options:

Both options are widely available and commonly used in various applications. If you need help updating the schematic or have other requirements, feel free to ask!

replace with n 0603

To replace (R3) with an 0603 SMD package, you should update the footprint in your design tool to reflect the new dimensions. Here's a step-by-step guide on how to proceed:

By following these steps, (R3) will be appropriately updated to use a 0603 SMD resistor in your design. If there's anything else you'd like to adjust or need further assistance with, let me know!