Personally, I'd rather see them for traceability. IPC-A-600 section 2.8
puts the emphasis on the procurement documentation, so if it wasn't
explicit and they're on, it comes down to relationship and whether this
has degraded performance, solderablity etc (which I doubt).
Arrange meeting with customer to set up a customer profile which
captures this as "general rules" - even then some things fall through
the net - and it being pragmatic again. List things which can be done -
the obvious compensations, the things that should be notified - clipping
silkscreen, and the must refers - feature changes, as well as the
allowable inclusions - logo, balance, test coupons and get agreement.
I guess it also depends upon application, security, commercial
sensitivity etc and this can be a minefield.
Keep talking and build the relationship - my 50p.
Regards,
Phil.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joe Hughes
Sent: 22 June 2007 14:37
To: [log in to unmask]
Subject: [TN] Vendor Markings
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I'm interested in opinions regarding Vendor Markings. If a fabrication
drawing is silent regarding vendor markings, is it acceptable to apply
the fabricators UL logo? We have a customer that is angry we applied
our logo.
However, we feel we need to apply our logo for our own traceability and
ability to do failure analysis should the boards ever be in question.
We have had several occasions where our customers return boards we
didn't build. It obviously is easy when we can show them the logo is
not ours, but it gets difficult when there are no logos on the board.
They'd like us to rebuild 5 lots of boards due to not asking them if it
was acceptable to apply our vendor id.
Should the fabricator be responsible for requesting approval for vendor
markings on every job, or should the board buyer be responsible for
stating no vendor markings allowed?
Your input is appreciated.
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