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Subject:	Re: brass pins
From:	"Ingemar Hernefjord (EMW)" <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Fri, 25 Feb 2000 08:32:42 +0100
Content-Type:	text/plain
Parts/Attachments:	text/plain (54 lines)

Morning both of you. I don't know exactly for what purpose you want these brass pins. We use similar pins for DC and small signal feed to large ceramic substrates, and we have found that it can be a little tricky. Suggest that you plate nickel followed by gold flash, or, better, pretin the pins (still with nickel barrier). If you need good solder strength, keep an eye on what's under the pins after soldering. Could be large voids and other trouble . Also, if you are going to use your pins for mating a female, see that no solder wets along the pins. Good Luck.
Ingemar Hernefjord
Ericsson Microwave Systems




Hi Brent! You should be able to solder to brass - check with you flux supplier
to get their recommendations. The flux you are using may not have enough
activation to breakdown the oxides on the brass surface. On word of caution -
brass (copper and zinc alloy) can undergo 'dezincification' if there is no
barrier plating between the brass and your solder joint. In some use
environments this becomes a latent defect. Good Luck.

Dave Hillman
Rockwell Collins
[log in to unmask]




gelon <[log in to unmask]> on 02/24/2000 04:48:15 PM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
      gelon <[log in to unmask]>

To:   [log in to unmask]
cc:

Subject:  [TN] brass pins



Has anyone ever tried to flow solder brass pins before? We are attempting to do
this and not having much luck. If anyone has done this before and has some
suggestions that might help I would appreciate it

thanks
Brent Green

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