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Subject:
From:
Gabriela Bogdan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gabriela Bogdan <[log in to unmask]>
Date:
Wed, 13 Dec 2006 21:54:32 +0300
Content-Type:
text/plain
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text/plain (208 lines)
No, I don't.
I don't even know what thickness we are talking about, and what volume and
what paste paste we are talking about. I don't know how this alloy may
behave during lead free wave soldering and what could happen to the bath.
 I hope that you will get the right answer from the collegues on the net.
Gaby
----- Original Message -----
From: "Reuven Rokah" <[log in to unmask]>
To: "TechNet E-Mail Forum" <[log in to unmask]>; "Gabriela Bogdan"
<[log in to unmask]>
Sent: Wednesday, December 13, 2006 10:46 AM
Subject: RE: [TN] 58Bi/42Sn /// HASL for PCBs


> 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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