Hi Richard, That's exactly what we did in the case relating to the picture I posted to narrow it down to a certain date code connector from AMP. Further purchases of the connector from distribution had the condition that it wasn't from the bad date code. As you might guess, AMP didn't step up to the plate and offer much... Steve ----- Original Message ----- From: "Richard Kraszewski" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, March 25, 2010 6:07 PM Subject: Re: [TN] Orange Peel Termination Finish If it's a real bad case of co deposition you can tell with a microscope and solder iron. Just touch the tip with a solder iron and watch the melt front as it progress up the lead. In some instances I have see little volcanoes of dark material ~exploding to the surface. Rich Kraszewski (920)969-6075 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman Sent: Thursday, March 25, 2010 1:10 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]> To [log in to unmask] cc 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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