Way of Label Components PCB Versions

Mike

I have a current version of my PCB, and I'll make a new one where I will delete some resistors here and add some more there.

For numbering, is there any common rules? Should I re-use the numbers of deleted resistors for the new ones, should I re-number everything to avoid holes in the numbering sequences, or should I leave the holes in the sequence for the deleted resistors and add the new ones at the end of the sequence ?

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Reply 2016-12-28 19:11:02

Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

Francisco Mesa

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I prefer to use numbering of components based on the functional block staring with 100, 200, and do on.

Reply With Quote 2016-12-30 11:00:45

ramadanrenan

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I generally leave the designators the same after a new review if there is even a slight chance that someone might refer to old documentation while looking at the new board. It keeps continuity between the revs so that a technician can still follow the old schematic when troubleshooting the new board and positional references in documentation will still be accurate.

Reply With Quote 2016-12-30 10:59:41

Ren livingston

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You should leave the holes, it lets the schematics and the PCB indicate a mismatch if someone has to repair or diagnose such a device one day in the future.

Reply With Quote 2016-12-30 10:58:17