Bob,
Depending on what your time frame is, we may be able to work together.  JPL is 
managing a consortium to assess the reliability of BGA soldered interconnects.  
We are fairly well along in the project.  Members include: ITRI, IBM (East 
Fishkill & Canada-Celestica), Boeing, Hughes, Altron, Rochestor Institute of 
Technology, the EMPF, Amkor Anam, and Xetel.  We've designed the test vehicles 
and are ready to begin assembly (middle of October). 

We have 200 test vehicles with four parts each.  We are testing 9 different part 
types which are centered on 300 and 600 I/O.  We have OMPAC, SuperBGA, perimeter 
and full arrays.  We also have a 560 I/O SuperBGA which will be power cycled to 
failure.

We may be able to use your services following assembly for inspection.  This 
would give you data and since we plan on testing to failure, quantifiable 
criteria.  We are currently negotiating with Nicolet and Microfocus but would 
like to talk to you.

Give me a phone call at your convienence.

Regards,

Phillip R. Barela, Technical Group Supervisor, Applications Engineering Group,
Jet Propulsion Laborator  phone: (818) 354-6870
_______________________________________________________________________________
Subject: X Ray Inspection Fine Pitch,BGA, Chip
From:    [log in to unmask] at Internet
Date:    9/28/95  11:35 AM

This is a repeat of my request, I thought I would be trampled under foot with
Email about this subject not even sales people. If there is no in-house
standards that people want to discuss I will need to pick one out of the air.

A am currently compleating an inspection video for x-ray covering chip, J lead,
gull wing and BGA terminations and need to have some input on the criteria used
on these types of joints. I have already used the x-ray on my BGA training video
but would like some basic criteria. If any one has a standard that they use for
assesment and is willing to provide the criteria then the best can have a FREE
copy of the tape when compleated.

Bob Willis SMART Group UK
Tel: 01245 351502
Fax: 01245 496123

SMART Group is Europes Largest Trade Association dealing with surface mount it
has over 500 members.