We will not be changing our part numbers. Instead we have added two extra
fields to our MRP stock system. These field indicate if 1-the part is ROHS
compliant and 2-the part can withstand 240-260oC. Each part will have the
description changed to indicate the new supplier part number (if it is
changing). This description change will be controlled by an Engineering
Change Order.
I think that whichever way you choose there is still a lot of data entry
involved.
Mark
===== Original Message from [log in to unmask] (Leadfree Electronics Assembly
Forum) at 30/05/05 20:11
>All right, I am in a big internal fight in my company. I thought we had
>achieved consensus on changing PN's and had even come up with a format to do
>it. As soon as we started to try to implement it, however, two big issues
>came up.
>1. The format we chose didn't work with the pick and place equipment ( we
>have a small internal line for some of our SMT needs. The rest is sent out)
>2. When asking for input on alternative preferred formats, R&D department
>rose up and started to fight for no change at all.
>
>The issues are:
>a) Apparently the CAD layout database of parts has been stored by PN. Which
>means that they will need to copy and rename pretty much the whole database.
>(I won't say what I think of that 'brilliant' idea, or whoever thought of
>it...whatever happened to naming the database parts by their package
>type???)
>b) Our MRP parts database will have to increase by 50-75% in size, making it
>more unwieldy.
>c) The MRP database entry could take up to 15 weeks of straight keyboarding,
>by those that currently maintain it - and that is just straight typing, no
>doing any of the other jobs they normally are responsible for...
>d) The new PN standard will be stuck to the part forever, even once Pb free
>is the norm. We will still have to keep sticking our "F" on the end of
>every new part we make forever and ever,...
>
>One of the suggestions is that we keep the existing PN's for Pb free, and
>make new PN's for items that will stay "leaded". My argument is that it is
>totally backward from industry standard, and then we will have to constantly
>keep educating our suppliers in "our way" of doing things. The response was
>that they didn't think there was an industry standard FOR changing PN's,
>because they could rattle off several co.'s that are not. Since caps and
>resistors make up a huge part of our database, and we can find examples for
>almost all of them that did not change PN's...
>
>Anyone have any additional resources, papers, arguments to help fight for
>changing PN's?
>I have been looking at the NEDA paper, and the iNEMI position.
>Or should I just give up and allow whoever screams the loudest in the co. to
>win...?
>
>Genny
>
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