Through Hole Pads Calculation

Three possible minimum hole sizes: As per IPC 2222 Minimum Hole Size = Maximum Lead Diameter + 0.25mm Minimum Hole Size = Maximum Lead Diameter + 0.20mm Minimum Hole Size = Maximum Lead Diameter + 0.15mm A Minimum Hole Size = 0.55mm + 0.25mm = 0.80mmB Minimum Hole Size = 0.55mm + 0.20mm = 0.75mm C Minimum Hole Size = 0.55mm + 0.15mm […]