What is .SCH file extension?
Schematic, or visual diagram, of a PCB (printed circuit board), created with EAGLE PCB design software; includes symbols (for logic gates) connected by lines, which represent buses; used for creating a actual circuit board (.BRD) file.
NOTE: EAGLE stands for "Easily Applicable Graphical Layout Editor."
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.