Drill size of 33mil is converted to 0. Please provide separate drill files for plated (PTH) and non-plated (NPTH) holes if possible. PCB drilling is the process of creating holes in a printed circuit board—whether for mounting through-hole components, connecting layers via plated holes, or providing mechanical mounting points. It sounds straightforward, but the reality is far more complex. A typical 4-layer board might have. To meet standard interface dimensions, optical module PCBs typically measure 1. Two primary manufacturing processes exist for mechanical blind-via stack-ups and conventional HDI structures, as follows: 2+2: Cutting → Buried Drilling →. At the outset, let's address the core concern: the minimum drill size for PCB holes typically starts at around 0. 15 mm for standard drilling processes, while advanced techniques like laser drilling can achieve even smaller holes down to 0. These sizes accommodate the majority of resistors, capacitors, integrated circuits, and connectors. There are 3 types of holes in a PCB, Plated Through Hole (PTH), Non-Plated Through Hole (NPTH) and Via Holes, these should not be confused with Slots or Cut-outs. PCB drills are available to help make your work easier.
