[sdiy] Which solder is safer for home projects ?

Ingo Debus igg.debus at t-online.de
Sat Oct 24 16:03:31 CEST 2015


> Am 24.10.2015 um 00:41 schrieb Richie Burnett <rburnett at richieburnett.co.uk>:
> 
> The only time I've actually seen a problem that was traced back to poor flux cleaning was around a 32.768kHz watch crystal that had been manually replaced on a large batch of boards made for a company where I worked.  The real-time clocks in all of the product that was shipped to Asian markets started to fail in the humid season. Other world markets were unaffected. This was apparently due to flux residue absorbing water from the humid atmosphere, forming a conductive path with salts present in the flux and damping the crystal enough to stop oscillation.

Do you have an idea of the resistance that was caused by the flux? 100s of kOhms? Megohms?

Ingo


More information about the Synth-diy mailing list