What is stacked Micro-via?

Stacked micro-via is a type of compound design structure which stacks micro-via on top of each other. Stacked micro-via use space efficiently, allowing you to achieve the highest possible circuit density and are easier to use than a staggered structure. Unfortunately, stacked micro-via are less reliable as the via experiences greater thermal stress during the solder reflow step. Consequently, they are considered to be less reliable than even a through-via. 

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