关键词: 通流量, 影响因素, 覆铜厚度, 线宽

Abstract: This paper mainly introduces the important factors aff ecting the PCB current carrying capacity: copper thickness, temperature rise, trace width, trace positioning and other conditions that can change the current carrying capacity, and analyzes the infl uence of each factor on the change of PCB current carrying capacity. By controlling a single variable at a time, it studies the changes in such capacity so as to choose the appropriate board parameters for the printed boards, which makes PCB design more reasonable. According to the research results, the PCB parameters of ZPW•F-K transmitters are calculated to confi rm that the selection 
of transmitter parameters meet the design requirements. 

Key words: current carrying capacity, in? uencing factors, copper thickness, trace width