Gerbers are files sent to PCB manufacturers to produce PCBs. Gerber is a dated term because board shops currently require ODB++ files to mass-produce PCBs. The term Gerber is used loosely. It sometimes refers to any of the files that represent the PCB’s electrical and mechanical characteristics, including EBD, ODB++, and board files. When a customer asks for Gerber files for a module, it is important to determine what specific files they really need.