The FCC requires legible part numbers on all PCBs they certify. Its ok in silkscreen as long as it doesn't wash off. UL might, too.., I forgot. I believe they WILL accept layer text (Text In Copper) as long as it is protected by a hot solder overlay. I don't believe they accept stickers. --Bob Wouter van Ooijen wrote: >>>> How about no *part numbers* >>>> on the PCBs >>>> >>> Why would that be a problem? The only time I need the part >>> >> numbers (!= >> >>> part values) is when I am bug-hunting and I need to find a >>> >> particular >> >>> part. For that I open eagle with part numbers visible >>> >> ??? then you never had 200 capacitors and 300 resistors on >> one board right ? >> It's difficult to find the part even with assembly drawing magnified 8 >> times and printed on paper in different colours for component silk, >> component number and route on the mounting layer... >> > > No, i have never dealt with a PCB of that complexity, but I answered > someone who was alarmed at the idea of a PCB without part numbers. If > finding the part numbers on a multi-color (probably magnified) printout > is difficult I don't think part numbers on the silkscreen will make > things easier! > > Wouter van Ooijen > > -- ------------------------------------------- > Van Ooijen Technische Informatica: www.voti.nl > consultancy, development, PICmicro products > docent Hogeschool van Utrecht: www.voti.nl/hvu > > > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist