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January 2005

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Subject:
From:
"Ingemar Hernefjord (KC/EMW)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Ingemar Hernefjord (KC/EMW)
Date:
Thu, 13 Jan 2005 10:16:48 +0100
Content-Type:
text/plain
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text/plain (87 lines)
the Swiss are unique....

Ingemar

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Le Ai Quoc
Sent: den 13 januari 2005 09:59
To: [log in to unmask]
Subject: Re: [TN] Antw: [TN] Must we applied N2 to reflow when using
Pb-free solder paste?


Hi Guenter,
Thanks so much for your advice. Actually, your idea is unique on this net
about this topic. It seems nobody use no N2 for reflow.
Best regards,
England

----- Original Message -----
From: "Guenter Grossmann" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, January 13, 2005 3:27 PM
Subject: [TN] Antw: [TN] Must we applied N2 to reflow when using Pb-free
solder paste?


> John
>
> Reflow soldering Pb free is possible without N2. You will see some
> problems with wetting. However, the reaction of the solder with the
> metallisation takes place.
> I heard of rumors about reliability problems when soldering without N2
> but didn't read a paper so far.
>
> Best regards
>
> Guenter
>
>
>
> EMPA
> Swiss Federal Laboratories  for Materials Testing and Research
> Centre for Reliability
> Guenter Grossmann,  Senior Engineer
>
> 8600 Duebendorf
> Switzerland
>
> Phone: xx41 1 823 4279
> Fax :     xx41 1 823 4054
> mail:     [log in to unmask]
>
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Search the archives of previous posts at: http://listserv.ipc.org/archives
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