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December 2006

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Subject:
Re: 58Bi/42Sn /// HASL for PCBs
From:
Gabriela Bogdan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gabriela Bogdan <[log in to unmask]>
Date:
Tue, 12 Dec 2006 18:50:40 +0300
Content-Type:
text/plain
Parts/Attachments:
text/plain (149 lines) 
Well, if you want to play an "Uri Geller" trick to your customers, maybe it
is a good idea...
Here they are soldered- and now: Abrakadabra- they all fall off just by my
magic touch!
Gaby
http://www.mse.uiuc.edu/faculty/Shang/Preprints/1997-2006/ScriptaBi.pdf
http://www.mrs.org/s_mrs/bin.asp?CID=2274&DID=48689&DOC=FILE.PDF


----- Original Message -----
From: "Reuven Rokah" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, December 12, 2006 9:54 AM
Subject: Re: [TN] 58Bi/42Sn /// HASL for PCBs


> I think its can be good alloy for  PCBs HASL plating.
>
> If someone against, pls explain why not.
>
> Best Regards
> Reuven ROKAH
> e mail: [log in to unmask]
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman
> Sent: Tuesday, December 12, 2006 1:34 AM
> To: [log in to unmask]
> Subject: Re: [TN] 58Bi/42Sn
>
> Hi Kerry - Dr.  Hwang's book titled "Environment Friendly Electronics:
> Lead-free Technology", ISBN 0-901150-40-1, Chapter 6.2, contains a
> significant amount of data on the 58Bi/42Sn solder alloy which may be
> helpful in your efforts. Good Luck.
>
> Dave Hillman
> Rockwell Collins
> [log in to unmask]
>
>
>
>
>             Kerry McMullen
>             <Kerry_McMullen@L
>             TX.COM>
> To
>             Sent by: TechNet          [log in to unmask]
>             <[log in to unmask]>
> cc
>
>
> Subject
>             12/11/2006 09:01          [TN] 58Bi/42Sn
>             AM
>
>
>             Please respond to
>              TechNet E-Mail
>                   Forum
>             <[log in to unmask]>
>             ; Please respond
>                    to
>             Kerry_McMullen@LT
>                   X.COM
>
>
>
>
>
>
> Hello esteemed Technet,
>      I am looking comments on what you would consider the advantages
> and
> disadvantages of this composition of this solder paste. (58Bi/42Sn)
> Lower MP.  138 Degrees C.
> Lower fatigue resistance
> Wetting to ImAg??
> Wetting to ImNiAu??
> No Clean?  Residue?
> Intermetallic Formation?
> Mixing with 63/37Sn?
> Our application is an RF board where we would use this paste post Wave /
> Hand Solder.
> Any comments appreciated.
>
> Cheers,
> Kerry
>
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