日: 2025年12月11日

Controlled Impedance: A Comprehensive Guide for the PCB impedance control

Controlled impedance in printed circuit boards involves the regulation of resistance exerted by signal traces. It is determined by characteristic factors of PCB fabrication, such as trace width and copper thickness. This article discusses controlled impedance and the essentials of its execution in PCB manufacturing. Introduction Controlled impedance is the regulating impedance levels in PCB signal traces. It involves the process of measuring the impedance of certain traces in a PCB when it is being manufactured and making sure that they adhere to the limits stipulated by the designer. Despite being costly, this method gained popularity around the turn of the century as a result of the steadily rising frequencies […]