CTI in PCB Materials: Beyond FR-4 Selection
In PCB design and manufacturing, engineers usually focus on impedance control, thermal performance, stackup structure, and signal integrity. However, the base material itself determines another critical reliability factor: Comparative Tracking Index (CTI).For high-voltage, automotive, industrial, and safety-critical PCB applications, CTI affects electrical reliability, creepage distance requirements, and certification compliance. This guide explains CTI ratings, IEC […]