Bare PCB Materials w/ Dave Wilcox

In this episode Dave Wilcox, CAM engineer at CircuitHub,  joins us again to educate us on bare printed circuit board materials....think prepreg, laminate etc.Show Notes:-FR4 is the most common, widely available PCB material. It is a woven glass cloth filled with epoxy resin the is bonded together to form sheets of prepreg and laminate-If a circuit board were a sandwich, the laminate is the bread and the prepreg is the filling.-We discuss differences in FR4 used for lead vs lead free process.-What does high TG and the different TG ratings mean? -We briefly touch on some more exotic materials. -The laminate comes in different thicknesses laminated with different copper weights that are used to build different stackups. -Copper foil is used on the outside and also come in different weights. -What does is mean to be UL approved and how to PCB fabs get UL approval? -Sometimes more sheets of prepreg are used to get greater resin content. -How do the different materials arrive at the PCB fab?-Pet peeves - the news and printers. pickplacepodcast.com