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Subject:
From:
Reuven Rokah <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Reuven Rokah <[log in to unmask]>
Date:
Wed, 13 Dec 2006 09:46:09 +0200
Content-Type:
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text/plain (193 lines)
Hi Gaby, do you have any experience?

Dr' Jenny Hwang is favor for such idea, during the seminar. 

The thickness of the coating on PCB with the solder paste volume, will
reduce the % of the Bismuth to acceptable level.

Best Regards
Reuven ROKAH 



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gabriela Bogdan
Sent: Tuesday, December 12, 2006 5:51 PM
To: [log in to unmask]
Subject: Re: [TN] 58Bi/42Sn /// HASL for PCBs

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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