Definition

V-scoring cuts partial-depth grooves (typically 1/3 depth from each side) along panel separation lines, allowing individual PCBs to be snapped apart after assembly. V-scoring is faster and lower-cost than routing but limits board shape to straight lines, creates stress during depaneling (keep components 3mm from score line), and leaves rough edges. Score depth affects break-out force and edge quality. V-scoring works best for rectangular boards without components near edges. Tab-routing is preferred for irregular shapes or sensitive assemblies.