I asked this question about a year ago.
We chose not to change PN's, unless it is a BGA, or it must stay Pb-then
the Pbfree gets a new PN (in a few situations the Pb became a new number
and the old number migrated to RoHS). We also have a flag we can select
in our database saying which MPN's are RoHS.
Purchasing is supposed to try to order the RoHS first.
RoHS parts have a sticker attached at receiving, and stores is using a
modified FIFO - Pb first FIFO, then RoHS FIFO (unless it is needed for a
RoHS build, then RoHS is FIFO), even if Pb comes in after RoHS. This is
to purge our stock as much as possible.
Knowing what I know now, the headaches this has caused to all
departments, I would fight harder for new PN's. But we catered to the
design department not wanting to change every part number in every
design drawing of every product, etc...
Headaches include - purchasing doesn't know what is in stock, if they
need to buy specifically for a RoHS build.
Parts shortages.
Controlling stock at CM's
Handling stock on the production floor - avoiding bulk parts getting
mixed up.
Etc, etc, ad nauseum.
Who knows how we'll handle warranty work in the future.
But at this point I think we might be over the worst of the logistics of
it. We aren't changing now, anyway.
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: March 22, 2006 7:08 AM
To: [log in to unmask]
Subject: Re: [LF] How to implement the leadfree partnumbers
Dann,
Picture a guy with his eyes closed, hands covering his ears and a foot
outstretched stomping on the ground looking for land mines.
That should cover our methods.
Seriously, We have found that some manufacturers have changed the whole
part number, some have added a suffix and some have changed nothing
except their specification for plating. We are internally coding each
part as we identify it as RoHS compliant. Now the rub comes when we buy
a quantity of RoHS compliant parts, exhaust that supply and need to
order more. The next order of RoHS compliant parts carries a 14 week
lead time. Crud! Production must be kept operational so non-RoHS parts
must be ordered as a stop gap measure. What a night mare. Fortunately
we have not started up our lead-free wave for production, but we will be
in deep stuff soon if we can't get RoHS compliant parts in a timely
fashion.
Phil
-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Daan Terstegge
Sent: Wednesday, March 22, 2006 5:10 AM
To: [log in to unmask]
Subject: [LF] How to implement the leadfree partnumbers
Hi all,
I would like to know how others are dealing with the situation that
leadcontaining parts are replaced by the componentmanufacturers by
leadfree alternatives. Typically a suffix like LF or E3 is added to the
partnumber, which implicates that it is no longer compatible with the
qualified parts list (which specified the partnumber without the
suffix). This qualified parts list then has to be updated, but not
before someone has verified in some detail that the leadfree part is
indeed the same part as before. We have had some bad experienced,
therefore we are skeptical with regards to what the vendors tells us.
For our about 2000 parts we have estimated that this will cost us 800
manhours.
Are others doing the same thing, or are you relying on your incoming
goods department to correctly interpret what all the possible suffixes
mean.
Are
leadfree suffixes an issue with regards to your qualified parts list or
your MRP system or do you consider the suffix non-information?
All comments are welcome,
Best regards,
Daan Terstegge
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