Impedance Control PCBs are circuit boards designed to precisely control the impedance in the circuit traces to minimize signal reflections and losses. This is crucial for high-frequency and high-speed applications where signal quality and integrity are critical. By accurately controlling the impedance (e.g., 50 Ω for single-ended and 100 Ω for differential impedance), disturbances and interferences are reduced, which is essential for applications like 5G, network technologies, and high-frequency communication. The use of materials such as Rogers or PTFE allows for precise impedance control, crucial for the reliability and performance of these applications.