With the rapid evolution of HDI PCB technology, laser drilled microvias have become essential for achieving high wiring density, thinner stack-ups, and superior electrical performance. However, laser drilled microvia reliability in HDI PCB manufacturing is also one of the most challenging indicators of a PCB supplier’s true process capability.

Reliable microvias are not achieved by equipment alone—they require material understanding, precise laser control, optimized metallization, and strict reliability verification.

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