I would agree with Kat. Because this has been built this way before, WITH
NO COMPLAINTS from the customer, you basically have an unspoken contract of
acceptance, that the customer would have difficulty arguing against, if they
changed their mind. I probably wouldn't contact them. They can't want what
they don't know about...
However, seeing the mixed responses that this has drawn from the crowd, this
may have exposed a problem that you do need to correct for future new
contracts, and you might want to consider yourself lucky you haven't been
burnt to this point.
Having said that, personally anywhere we put a component layout on our
design automatically adds those pads to the stencil gerber file for the
paste, so we would be hard pressed to force our CM's to build without paste
on those not-installed spots when we provide the file for the stencil,
without doing a lot of additional editing to our files before we send them.
We almost never deal with wavesoldering any more, so I have no input on glue
dots. Since you stencil glue, rather than dispense it, do you create the
stencil file or does your customer?
Thanks for a mighty interesting thread that has generated good responses and
debate.
-----Original Message-----
From: Kathy Kuhlow [mailto:[log in to unmask]]
I would side with no on calling the customer based on: 1) this is not a new
product being built, you risk a lot more bringing the subject up now, 2) it
currently doesn't violate any stated IPC minimum requirements, if that's the
agreed upon workmanship criteria, 3) it follows traditional processing
results for a stencil adhesive.
Now you may want to start asking this question to new customers or part
numbers but to go back at this point could open a can of worms.
Kat
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