Lee,
I think one of us is confused.
I'm all for an SEM/EDS analysis as it's very handy for solderabilitu issues and I'm using it almost on a daily base. BUT I don't understand why someone would want to use SIMS or Auger for that kind of problems. I wouldn't even think of XPS either.
I guess in your e-mail you meant SEM (just typed SEMS) and if that what it was, then we are talking about the same thing.
Regards,
Vladimir
SENTEC
SENTEC
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: Lee parker <[log in to unmask]>
Date: Tue, 16 Jun 2009 20:33:10
To: <[log in to unmask]>
Subject: Re: [TN] HAL-Leaded assembly
Vladimir
I am surprised you would ask such an obvious question. During my 27 years at Bell Laboratories we resolved numerous problems of this nature with a SEMS analysis. In fact, AT&T installed one of the first such machines at its Oklahoma City facility in the late 70's and later many more. We presented numerous papers at IPC and other industry conferences describing the utility of a SEMs analysis in resolving solderability issues. Unfortunately, you must have missed these as well.
Best regards
Lee
J. L. Parker Ph. D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Vladimir Igoshev<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Monday, June 15, 2009 8:21 PM
Subject: Re: [TN] HAL-Leaded assembly
Why would anyone wants to use either Auger or SIMS on that kind problem? :-)
Vladimir
SENTEC
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca<http://www.sentec.ca/>
-----Original Message-----
From: Joyce Koo <[log in to unmask]<mailto:[log in to unmask]>>
Date: Mon, 15 Jun 2009 19:41:04
To: <[log in to unmask]<mailto:[log in to unmask]>>
Subject: Re: [TN] HAL-Leaded assembly
What you use to look? Sem or optical? Auger or sims?
--------------------------
Sent using BlackBerry
----- Original Message -----
From: TechNet <[log in to unmask]<mailto:[log in to unmask]>>
To: [log in to unmask]<mailto:[log in to unmask]> <[log in to unmask]<mailto:[log in to unmask]>>
Sent: Mon Jun 15 13:47:51 2009
Subject: [TN] HAL-Leaded assembly
Hello everybody, I am looking for some knowledge on what I see is a basic type problem that is driving me crazy. I am a sales guy who covers a sizable territory and in that territory for a PCB manufacturer (yes one of those) I have one account that I have been working with for about 4 years now that continuously has issues assembling both hand assembly as well as pick & place.
The surface finish is HAL (leaded) this is a military account that is pretty well structured in their processes. What I get told is that there seems like a contamination is on the surface when they scrub the surface it makes it better but not 100% better.They have sent back samples for us to look at , we saw nothing on the surface no contamination nothing wrong at all.
If this was one of a few that has the same or similar issues it would make some sense and I could go to the people I work with asking them to look into this issue. But it is the only company that has this issue.
Has anybody seen a similar type of a situation before? Understood that you cannot fix this but would appreciate advise as to where to look so hopefully this can be solved.
Thank you.
Bill Dworak
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