It’s been shown that the best via spacing is about 1/80^th of a wavelength, but I’ve found that two staggered rows of closest manufactural spacing works very well. We’ve seen this in electrometric simulation where you get very good isolation using that type of two row technique.

It’s been shown that the best via spacing is about 1/80^th of a wavelength, but I’ve found that two staggered rows of closest manufactural spacing works very well. We’ve seen this in electrometric simulation where you get very good isolation using that type of two row technique.