I’m partial to printable quick-references. This one breaks down the mil-to-metric conversions and their associated current capacities at 1-oz and 2-oz copper at both internal and external copper layers. The current capacity values are formula driven based on the IPC-2221 standard. So the tables can be easily reduced, extended, or reformatted as needed.
Click on the image below to download a printable Excel spreadsheet reference.
