[sdiy] Cleaning PCBs in Ultrasonic Baths

[Sarah Thompson]

I know I'm not allowed to use an ultrasonic cleaner for flight boards at
work. But then, I have a very picky employer. :-)

Sarah

On Tue, Dec 15, 2015 at 6:40 AM, Rob Spencer <Rob at gmsn.co.uk> wrote:

> Thanks Richie,
>
> I've just got done STM32 and a WM8731 on a otherwise unpopulated board.
>
> Kind regards
>
> Rob Spencer
> gmsn.co.uk
> 07590 267835
>
> > On 15 Dec 2015, at 13:35, Richie Burnett <rburnett at richieburnett.co.uk>
> wrote:
> >
> > I've got some Bluetooth modules here that also have warnings about U/S
> cleaning baths causing permanent damage.  Should be okay if you just U/S
> clean your SMD ICs before mounting any crystals and other sensitive parts.
> If in doubt I wouldn't drop it into the U/S cleaning bath though.  I
> witnessed someone dangle an expensive mechanical wrist-watch into the U/S
> cleaning bath at work to remove grime from the wrist band.  Needless to say
> it didn't work again when it was taken out!
> >
> > -Richie,
> >
> >
> > -----Original Message----- From: Richie Burnett
> > Sent: Tuesday, December 15, 2015 1:09 PM
> > To: Rob Spencer ; synth-diy at dropmix.xs4all.nl
> > Subject: Re: [sdiy] Cleaning PCBs in Ultrasonic Baths
> >
> > You need to be careful with some parts in U/S cleaning baths.  Tuning
> fork
> > (32.768kHz) watch crystals are susceptible to damage from what I can
> > remember.  There may be other susceptible components too?
> >
> > -Richie,
> >
> >
> > -----Original Message----- From: Rob Spencer
> > Sent: Tuesday, December 15, 2015 12:46 PM
> > To: synth-diy at dropmix.xs4all.nl
> > Subject: [sdiy] Cleaning PCBs in Ultrasonic Baths
> >
> >
> > I’m pretty sure it is okay to do this, but just wanted to check with you
> > guys first, but is it okay to clean flux from PCBs after the SMD chips
> have
> > been soldered?
> >
> > If so, what settings? About 65DegC? On the delicate setting for about 30
> > mins?
> >
> > Many thanks in advance.
> >
> > Rob Spencer
> > gmsn.co.uk
> > 07590 267835
> >
> >
> >
> >
> >
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> >
> >
> >
> >
> >
> >
> >
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