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Hello Everyone, I am having a query regarding the rectangular PTH slot in the Layout.We have taken hole type as rectangular PTH slot for one of the Fuse in our Layout. But when we generate a NC drill file for same , this drill does not appear in the NC drill file ( although it appears in the drill customisation table as rectangular slot / Drill legend table). According to the Cadence help documentation , NC route file has to be generated for drills other than circular drill and that has to be submitted for manufacturing purpose.But , where would manufacturer understand that the rectangular slot is PTH , as the *.rou ( nc route file) that is generated does not show any information stating that the rectangular slot is plated(PTH) .( NC drill file shows the information as the drill is plated / Non plated ).Regards,Prajakta.
At this point the only way for the fabrication vendor to know whether a slot is plated ornon-plated is by looking at the drill legend generated inside of Allegro.To your point, the route file (*.rou) that is generated should have the plating and countinformation in the header similar to the ncdrill file (.drl) which in my opinion the ncrouteheader should contain this type of information, even if it is only for reference.I would suggest submitting an enhancement request into Cadence to have the slotinformation added to the ncroute header.Mike CatramboneUTStarcom, Inc.
Hello Mr. Mike , Thanks for your answer.But actually we had a problem in our PCB, where we had submitted a drill file and all other layer files to the PCB manufacturer ( We have not submitted drill legend file to the PCB manufacturer ). And the PCB vendor was not able to get the information of the rectangular slot on the layout from the drill file .And we didnot receive the PTH rectangular slot for Fuse on the PCB.Regards,Prajakta.
Sorry for the delayed response.With all of our projects we generate a Fabrication Drawing Gerber file which contains a dimensioned board outline and critical features, drill locations, drill legend and fabrication notes which outlines the PCB requirements (material, finish, soldermask, silkscreen, etc.) This Fabrication Drawing Gerber file is included with all the layer gerber files, ncdrill / ncroute files and IPC Netlist file with the data package to the PCB Fabricator. This drawing is used by the fabrication vendor so they know how the PCB is to be built and most vendors will perform final inspection of the PCB with a printed out version of this gerber file.Hope this helps,Mike CatramboneUTStarcom, Inc.