Hi folks;

I generated a lot of confusion with my vague reference to "dazor"  inspection.
I'm sorry about this, let me clarify.

A "dazor"  is a term we generically apply to a large magnifying device
surrounded by a light (typically a circular fluorescent light).

Dazors, as commonly used should be 3 diopters in magnification, so that they
can easily be used in conjunction with inspections to IPC-600.

Dazors are typically used for reference, and often not calibrated, as they
contain no reticule.

Hope this helps everybody.
---------------------- Forwarded by Jim Herard/Endicott/IBM on 06-05-97 01:06 PM
 --------------------------

        randyre @ fgspo01.merix.com
        06-05-97 12:47 PM
Please respond to [log in to unmask] @ internet


To: Jim Herard/Endicott/IBM
cc:
Subject: RE: FAB and ASSY: Spec for Electroless Ni and Immersion Au

Jim,

Thanks for the input.  Your criteria seems to reasonable and we are going
the evaluate using it on our product.  What is the Dazor inspection?

Randy Reed
Merix Corporation
[log in to unmask]
503.359.9300  x 5-4421

 ----------
From:  Jim Herard[SMTP:[log in to unmask]]
Sent:  Wednesday, June 04, 1997 7:32 AM
To:  randyre; TechNet
Subject:  Re: FAB and ASSY: Spec for Electroless Ni and Immersion Au


Randy:

I haven't found any.  Even our customer's who request Ni/Au finishes
don't
have
criteria.  I'd be happy to work with you on it.  Common sense says that
functionally, what is needed is:

 -  Good solderability
 -  Flat smooth surface

I go with a Dazor inspection, allowing no exposed Ni visible under the
dazor.
Pass the ANSI J-STD-003 solderability test, and follow normal inspection
procedures for coating on tabs, tab voids, etc that would apply to Cu or
HASL
pads.

Shading of ring lights I encourage, to  help referee  on visible
scratches,
etc.

Hope this helps.  I plan on working with the alternative finishes task
group
to
encourage this type of simplistic, functional specification.

Jim Herard
IBM Microelectronics
Quality Engineering
[log in to unmask]

        randyre @ fgspo01.merix.com
        06-03-97 07:10 PM
Please respond to [log in to unmask] @ internet


To: Technet @ ipc.org @ internet
cc: johnd @ fgmpo01.merix.com @ internet, stevesp @ fgspo01.merix.com @
internet

Subject: FAB and ASSY: Spec for Electroless Ni and Immersion Au

What industry standards are available that provide inspection criteria
for immersion gold and electroless nickel finishes?

If no specification is available, what are OEMs using as inspection
criteria for this finish?

Randy Reed
Merix Corporation
[log in to unmask]
503.359.9300  x5-4421

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