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Subject:	Re: Orange Peel Termination Finish
From:	Mike Fenner <[log in to unmask]>
Reply To:	[log in to unmask]
Date:	Tue, 30 Mar 2010 11:04:35 +0100
Content-Type:	text/plain
Parts/Attachments:	text/plain (251 lines)
Perish the thought... but could this be a re-tin job to make leaded part
look like a lead free part? That would be sort of "counterfeit"

Regards
 
Mike

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
Sent: Thursday, March 25, 2010 6:10 PM
To: [log in to unmask]
Subject: Re: [TN] Orange Peel Termination Finish

Hi Joe - is the surface finish bright acid tin? Sometimes the organic 
brighteners in some tin formulations, especially bright acid tin, are 
codeposited and result in weird topography and/or solderability issues 
during solder processing. The "bumpy" connector picture Steve posted 
looked like an example of a codeposited brightener problem.

Dave



"Kane, Joseph E (US SSA)" <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
03/25/2010 10:56 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
"Kane, Joseph E (US SSA)" <[log in to unmask]>


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Subject
Re: [TN] Orange Peel Termination Finish






Here's a pretty good scan:

http://ipc-technet.groupsite.com/galleries/photo/117591

-Joe

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Joseph E (US 
SSA)
Sent: Thursday, March 25, 2010 11:34 AM
To: [log in to unmask]
Subject: Re: [TN] Orange Peel Termination Finish

Not blumpy exactly.  I don't have a soft copy of this document, so I'm 
trying to get a good scan.

-Joe 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: Thursday, March 25, 2010 11:14 AM
To: [log in to unmask]
Subject: Re: [TN] Orange Peel Termination Finish

Eeeeewwwww... That is ugly!

Phil

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Thursday, March 25, 2010 10:43 AM
To: [log in to unmask]
Subject: Re: [TN] Orange Peel Termination Finish

Does it look something like this?

http://stevezeva.homestead.com/files/Connector_Blumpies.jpg

Steve

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kane, Joseph E (US 
SSA)
Sent: Thursday, March 25, 2010 9:38 AM
To: [log in to unmask]
Subject: [TN] Orange Peel Termination Finish

One of our guys brought over a counterfeit parts manual with a picture of 
some component leads exhibiting a rough orange-peel texture.  The picture 
was presented as evidence of re-tinning, which could indicate a 
counterfeit part.

The question is what could cause orange peel finish after hot solder dip? 
We perform a lot of hot solder dip, both in-house and outside, and neither 
of us could remember the last time we saw anything like this, though it 
does look kind of familiar.

In the picture, we could see no obvious patches of de-wetting or 
non-wetting, just a uniform pebbly surface.  I don't think this would be 
caused by a solderability problem, or rapid cooling, could it be too 
little immersion time in the hot solder?  Could the solder in the pot be 
contaminated with something like copper, gold, or iron?

-Joe


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