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June 2009

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Subject:
From:
Bill Dworak <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bill Dworak <[log in to unmask]>
Date:
Mon, 15 Jun 2009 11:16:20 -0700
Content-Type:
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Sorry Bev, I am guilty of using terminology that is specific to my end of 
the industry. Hot air leveling (HAL) leaded, means that the surface finish 
is tin lead , I defined it as leaded because there is a leaded as well as 
non-leaded surface finish out there now. This is a military account so we 
cannot use no-lead. I did leave out the materials used typically it has been 
FR4, 130 as well as 170.
 Sorry.

 Bill


----- Original Message ----- 
From: "Bev Christian" <[log in to unmask]>
To: <[log in to unmask]>; <[log in to unmask]>
Sent: Monday, June 15, 2009 10:53 AM
Subject: Re: [TN] HAL-Leaded assembly


Bill,
Not enough info!
What surface finish?
What board type?
What environment boards stored in?
How long between manufacture of boards and use?
Bev
RIM

----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[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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