Justin,

It looks like you have some solder that has made its way up the gold.
The picture of the prior board looked as if there was less solder used to attach the connector, as there is still evidence of gold on the leads (where solder has not covered the leads as it has done in the 'new batch' image).

Maybe they installed connectors that had been tinned, so there was additional solder in the process.

Ben

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Justin Braime
Sent: Wednesday, October 07, 2009 10:12 AM
To: [log in to unmask]
Subject: [TN] gold connector discoloration

Hi Technetters,

 

We've just received a new batch of boards from one of our subcontractors,
and the Hirose DF12 header sockets have discoloration on the mating
terminals.

On previous batches, we have seen a little discoloration adjacent to the
solder joints, but never up in the connector mating area itself. The process
hasn't (allegedly) changed.

 

I've posted some pics at:

http://gallery.me.com/jbraime/100005

 

Any ideas as to the cause? Any detriment to functionality?

 

Thanks in advance,

 

Justin

 



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