Custom PCB (Printed Circuit Board) design is vital in medical devices, ensuring their reliability, safety, and functionality. Tailoring PCBs to specific medical applications addresses unique requirements such as size, power, and regulatory standards. Custom designs facilitate the miniaturization and integration of components, enabling compact, portable, and implantable devices that enhance patient care. Key aspects include meeting unique requirements that off-the-shelf PCBs cannot fulfill, ensuring safety with redundant systems and fail-safes, and optimizing performance through precise component selection and layout. Regulatory compliance with standards like ISO 13485 and FDA guidelines is crucial, as is managing electromagnetic interference (EMI) and maintaining signal integrity. The design process involves understanding requirements, schematic design, component selection, PCB layout, and design verification. Manufacturing considerations include material selection, surface finish, advanced fabrication techniques, and stringent quality control. Testing and validation, including functional, environmental, accelerated life, and regulatory testing, ensure the PCB’s reliability and safety. Effective collaboration with design teams, suppliers, and customers is essential for success. Continuous improvement through design and process optimization and adopting new technologies keeps companies competitive. Custom PCB design is instrumental in developing innovative medical devices, ultimately improving patient care and quality of life.