Unimicron and Cablecom reported historical revenue highs in June and Q2, driven by strong demand for high-end PCBs in AI servers. The increasing complexity of AI server substrates, requiring higher layer counts and smaller hole diameters, is causing severe shortages in specialized drill bits. Both companies are actively expanding capacity to meet the elevated market demand.
AI server PCB and substrate complexity is creating a binding constraint on specialized manufacturing inputs like drill bits, forcing capacity expansion.