When initiating a design, it's crucial to assess the capabilities of the factory responsible for manufacturing your PCB. The minimum size of vias is typically provided in the manufacturer's capability section on their website. It's important to note that smaller via-hole sizes can increase the production cost of your board. For instance, if you're considering PCBWAY Company for production, you should review the information provided in the link I've included.

Picture reference: https://www.pcbway.com/capabilities.html

Nevertheless, you can contemplate utilizing via hole diameters of up to 0.2 and a ring size of 0.45, tailored to suit your specific application requirements.

When initiating a design, it's crucial to assess the capabilities of the factory responsible for manufacturing your PCB. The minimum size of vias is typically provided in the manufacturer's capability section on their website. It's important to note that smaller via-hole sizes can increase the production cost of your board. For instance, if you're considering PCBWAY Company for production, you should review the information provided in the link I've included.

Picture reference: https://www.pcbway.com/capabilities.html

And it's important to note that the size of the via holes is determined by the PCB manufacturing company, and designers cannot freely choose any size they want in their designs.

Picture reference: https://www.pcbway.com/capabilities.html

Nevertheless, you can contemplate utilizing via hole diameters of up to 0.2 and a ring size of 0.45, tailored to suit your specific application requirements.