I am considering using four layer PCBs as bus bar interconnects for a multi-level inverter. Most of the relatively low cost 4 layer PCBs for prototyping quantities seem to only offer 0.5 or 1 oz copper layers? With this copper thickness it is really difficult to keep the trace width to a reasonable value that can be routed. Any ideas of prototype volume PCB manufacturers which will do thicker copper layers for cheap?
Jan 15.2020, 10:27:25
Any nonstandard options are not going to be available on a prototype pooling service, so you will be paying all the tooling cost for your panel, so cost for a proto is going to be at least an order of magnitude more than a pooled service.