High-Voltage PCB Design: Clearance, Creepage, Slots & Insulation Systems

High-voltage PCB design diagram illustrating clearance through air distance between HV pads, creepage path along PCB surface, slot cutout blocking surface creepage, and multilayer insulation system with FR-4 laminate, copper layer, solder mask, and conformal coating.

Modern electronic systems are increasingly required to handle high voltages —from renewable energy converters and electric vehicles to medical imaging systems and industrial automation. Designing printed circuit boards (PCBs) that safely and reliably operate at high voltage levels demands more than standard design rules. A high-voltage PCB (HV-PCB) must prevent arc discharge, dielectric breakdown, and […]