The PCB file suffix for Protel and the new version of AltiumDesigner is "PCB" or "pcbdoc", which is commonly used in many PCB design files
The suffix of ZUKEN's Cadstar, CR5000 and other PCB files is usually "PCB"
The PCB file suffix for Allegro and Eagle's PCB software under Cadence is "brd"
The PCB text format of PADS, Protel, P-Cad "asc" software
The PCB output format of cam350 is "cam"
The ODB file format generated from PCB design files is "tgz"
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