[sdiy] Cleaning PCBs in Ultrasonic Baths

Rob Spencer Rob at gmsn.co.uk
Tue Dec 15 15:40:39 CET 2015


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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