Subject: | |
From: | |
Date: | Wed, 4 Jun 1997 10:34:48 -0400 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
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
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
|
|
|