Dk and Df Characterization Methods for PCB Laminates - Part Ⅰ

摘要

IF NOT FOR my parents' objection, I would have been held back in kindergarten. Mrs. Steinbaugh said I just didn't understand what school was all about. I remember other kids going to play while I tried to figure out how to connect the monkeys by drawing a line between the ones that were doing the same thing in our Think and Do workbook. And now, many years later, I have to confess I've had much of the same frustration connecting the monkeys on all the PCB dielectric and laminate-testing standards. Whose idea was it to have a dozen different IPC material-measurement standards? Which ones are appropriate or accurate, and in what situations?