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Typical gerber extensions for different software packages

During the layer assignment in our Auto File Verification, you will have to tell us which file is which layer. This table will help you for some common packages.
Software: Eagle
File Extension Description
 cmp  Top Copper
 sol  Bottom Copper
 stc  Top Soldermask
 sts  Bottom Soldermask
 plc  Top Silkscreen
 pls  Bottom Silkscreen
 drd  NC Drill

Software: Orcad
File Extension Description
 top  Top Copper
 bot  Bottom Copper
 smt  Top Soldermask
 smb  Bottom Soldermask
 sst  Top Silkscreen
 ssb  Bottom Silkscreen
 thruhole.tap  NC Drill

Software: Protel
File Extension Description
 gtl  Top Copper
 gbl  Bottom Copper
 gts  Top Soldermask
 gbs  Bottom Soldermask
 gto  Top Silkscreen
 gbo  Bottom Silkscreen
 drl  NC Drill

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