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Date: Tue, 29 Nov 2011 20:26:13 -0500
Message-ID: <CAPYb0EFxS8sJ6wNw6UP0FhMKkTwAk69D7CywO3NrQ0MbHMM37g@mail.gmail.com>
Subject: Re: [geda-user] Re: I won't do BGA's
From: Bob Paddock <bob DOT paddock AT gmail DOT com>
To: geda-user AT delorie DOT com
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>> Some parts, Accelerometers for example, leave you with few package options.

VTI does make one in a module package, 16 bit resolution, Automotive grade.
Most sensitive of any I ever tested.  I thought it was broken, until I
realized it was sensing each key I typed from a significant distance
away on the workbench.

> At 25um there was remains from all tested fluxes.
> At 50um water soluble and one of three "no-clean" fluxes left no traces
> At 75um no fluxes was left after washing
>
> The above is for PbSn.
>
> There is a reference to [3], which is said to show that with suitable
> layout one can get a stand-off distanse of 75-100um.

I'll add those references to my Get at the Library list, thank you for them.

I do wonder if those distances change for Lead Free?