Nah- Technobabble.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Bavaro
Sent: Monday, March 26, 2012 11:10 AM
To: [log in to unmask]
Subject: [TN] NTC RE: [TN] Out of the world tin whiskers
Wow, new word for me Technopoetry!!
The most recent new word for me was Geodata.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge Hernefjord
Sent: Tuesday, March 20, 2012 2:37 PM
To: [log in to unmask]
Subject: Re: [TN] Out of the world tin whiskers
is a fertile garden for the growth of tin whiskers......what
romantic...technopoetry !
Inge
On 20 March 2012 19:50, Stadem, Richard D.
<[log in to unmask]>wrote:
> Tin whiskers can grow in leaded circuits, ie, CCAs soldered with Sn63.
> The issue is that the parts need to be tinned of their lead-free
> original finish, and the ENTIRE LEAD then must be tinned with Sn63. If
> you leave a portion of a SAC305-finished lead untinned, the line of
> demarcation between the Sn63 solder and the SAC305 C -----Original
> Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo
> Sent: Tuesday, March 20, 2012 12:57 PM
> To: [log in to unmask]
> Subject: Re: [TN] Out of the world tin whiskers
>
> I thought space is exempt for leadfree. Why?
> --------------------------
> Sent using BlackBerry
>
>
> ----- Original Message -----
> From: Inge Hernefjord [mailto:[log in to unmask]]
> Sent: Tuesday, March 20, 2012 01:47 PM
> To: [log in to unmask] <[log in to unmask]>
> Subject: Re: [TN] Out of the world tin whiskers
>
> DO THEY NEVER LEARN!
>
> Inge
>
> On 20 March 2012 18:08, Gervascio, Thomas L
> <[log in to unmask]
> >wrote:
>
> > Tin whiskers at Saturn
> >
> > PASADENA, Calif. -- The Cassini plasma spectrometer instrument
> > (CAPS) aboard NASA's Cassini spacecraft at Saturn has resumed
operations.
> Mission
> > managers received confirmation on Friday, March 16, that it was
> > turned
> on.
> > They plan to monitor the instrument for any unusual behavior.
> > Last June, short circuits in the instrument led to unexpected
> > voltage shifts on the spacecraft. As a precaution, mission managers
> > turned off
> the
> > CAPS instrument while engineers investigated the issue. The
> > investigation led to the conclusion that tin plating on electronics
> > components had
> grown
> > "whiskers." The whiskers were very small, less than the diameter of
> > a
> human
> > hair, but they were big enough to contact another conducting surface
> > and carry electrical current. Researchers are still trying to
> > understand why whiskers grow on tin and other metals, but they know
> > now that whiskers
> can
> > grow in space and on Earth. It is believed that these or additional
> > tin whiskers that may grow on Cassini cannot carry enough current to
> > cause problems, but will burn out on their own like a lightweight
fuse.
> >
> >
> >
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