Electronic cigarettes, or vaping devices, rely on PCB assemblies to manage power delivery, control heating elements, and ensure user safety during operation. Given their direct interaction with users and exposure to liquids, heat, and electrical currents, these PCBs must adhere to stringent safety standards to prevent malfunctions such as overheating, short circuits, or battery failures. Achieving this requires careful attention to component selection, electrical isolation, thermal management, and compliance with industry regulations.