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Generic Part Numbers?

Discussion in 'Electronic Components' started by Whyrmie, Dec 2, 2005.

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  1. Whyrmie

    Whyrmie Guest

    Hi,

    This looks like the right place for this question;

    The company I work for is finally starting to realize that we need to
    do something different with our part numbers. Using vendor or
    manufacturer part numbers on our parts lists causes the inevitable
    problems due to multiple sources, equivalent parts, tricky formats,
    etc. In the past we've defined our own numbers for some of the more
    common components (resistors and capacitors mostly), but because there
    was no rhyme or reason to the numbers, and also it was nearly
    impossible to find the corresponding in-house number for a part, given
    the required parameters, or even if one existed. Some parts ended up
    having multiple in-house numbers, and others which logically should
    have been included with previously-defined numbers weren't because the
    particular value wasn't required when the numbers were defined.

    It was mass confusion, and still is, to a degree, because a lot of the
    numbers are still being used. So the idea of using "generic" part
    numbers has been suggested. Supposedly this is what most electronic
    manufacturing companies do.

    I think it's a great idea and could simplify things greatly, at least
    for future jobs. But it seems to me that to come up with a system which
    will accommodate all possibilities is going to take a lot of time,
    work, trial & error, and subsequent tweaking to find out exactly which
    parameters need to be encoded into the part numbers. It seems like a
    colossal waste of effort, if most companies out there are already using
    just such a system.

    So my question is, "Does every company that uses generic part numbers
    have to 're-invent the wheel' from scratch, or is there some kind of
    standard system out there which can be adopted?" And where could I find
    information about it?

    Thanks,

    .. . ... Scott . . ¶|;-D
     
  2. Whyrmie

    Whyrmie Guest

    Or, maybe not. ¶|;-(
     

  3. Every place I have ever worked developed their own system which
    worked for a couple years. For instance, the last place used a letter
    followed by seven digits for a part number. My suggestion is to create
    consecutive part numbers for any component that has standardized values,
    like resistors, capacitors and such. Even if you don't use every value,
    you already know what the part number will be when you need to add that
    part. A different prefix for each set will keep the 0805 from the 0603
    and the 5% from the 1% and the .1%
     
  4. Guest

  5. Whyrmie

    Whyrmie Guest

    Yeah, they've done something similar here too, but it hasn't worked
    well. Without being able to instantly get your hands on the drawing for
    the new part number, it could be anything. And there's no way to get to
    the new p/n, given the manufacturer number.I'm trying to avoid trying
    to design a system from scratch whicvh will accomodate all parts,
    without having to have a meeting and sign off a new drawing every time
    we decide to use a part we haven't used before. It just boggles my mind
    that in this day and age of multi-national mega-corporations, there's
    no standardized system, which means that every location has to make up
    their own and continually modify it to include new parts. No wonder our
    productivity as a nation is nowhere near where it used to be.

    Anyway, thanks.

    .. . ... Scott . . ¶|;-D
     
  6. Whyrmie

    Whyrmie Guest

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