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February 2017

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From:
"Giamis, Andy" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Giamis, Andy
Date:
Tue, 14 Feb 2017 20:06:54 +0000
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Interesting. 

I tore apart a certain smart phone a few years back and saw that they attach heat shields/heat spreaders to the PCB edge with Sn-Bi.   The PCBA was amazing but I thought the Sn-Bi solder joints had wetting issues and many of the solder joints were cracked.  Sn-Bi seems to be rather brittle.  It would be interesting to see how this particular alloy performs. 







-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Buetow

Sent: Tuesday, February 14, 2017 11:38 AM

To: [log in to unmask]

Subject: Re: [TN] New Solder Alloy



I have been in touch with Lenovo about the alloy, which is a tin-bismuth alloy developed in concert with Alpha and Senju. There's some info in the link below based on what I've learned.

http://circuitsassembly.com/ca/editorial/menu-news/27004-new-lenovo-lts-lowers-melting-temp-cuts-co2-emissions.html

Best,

Mike

-------- Original message --------From: "Vargas, Stephen M" <[log in to unmask]> Date: 2/14/17  9:19 AM  (GMT-08:00) To: [log in to unmask] Subject: [TN] New Solder Alloy Got news of this from a colleague. Interesting... would love to hear comments from the TechNet group.



http://news.lenovo.com/news-releases/lenovo-announces-breakthrough-innovative-pc-manufacturing-process.htm



Regards,

Steve Vargas


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