Electronics Forum | Tue Nov 01 09:57:18 EST 2005 | Chris
Hi, I am experiencing cracked solder joints on ceramic resonators after the ultrasonic plastic weld process. PCB assy is placed into plastic housing and then housing halves are ultrasonic welded. Not a soldering problem. I know this component is
Electronics Forum | Fri Apr 16 11:36:33 EDT 2010 | fönsi
Thank you for the links. I didn't know that there are companys that build test systems for ultrasonic inspection. My idea was to use a ultrasonic detector similar to crack inspection, for example to detect if the cooling pad is melted, or a solder jo
Electronics Forum | Thu Jan 29 14:24:56 EST 2004 | rick
What kind of cleaning method you recommend for PCB - double side SMD (fine pitch and BGA components) and THT elements (PCB are for microwave application!!). Process technology no-clean.We have to remove grease-fingerprints, dust etc. It is low volume
Electronics Forum | Sun Feb 01 15:07:10 EST 2004 | rick
Pete C Thank you for answer. Yes we have to remove solder flux so we need chemistry for no-clean flux residue. What kind of damage can i expact from ultrasonics device? you said damage IC and clock types?. We have all components in solid encapsulat
Electronics Forum | Fri Jun 25 15:48:55 EDT 2004 | tcp
The potting definitely is a factor in fracturing the grainy joints, but does not seem to damage a "good" solder joint.
Electronics Forum | Wed Apr 14 10:24:17 EDT 2010 | fönsi
Hello Does somebody of you have some experiences with ultrasonic detectors in SMT-Production? Is it possible to test quality of solder joints by using a ultrasonic detector similar to non destrucitve crack inspection tests? Is there a manufacturer fo
Electronics Forum | Sun Sep 22 06:21:31 EDT 2002 | Michael fogel
We are about to purchas a new cleaning machine for stencils & miss print and we are considering an ultrasonic one. Can someone light this point for me? What are the advantages / disadvantages of this method? How it effect the components and their sol
Electronics Forum | Tue Feb 01 21:48:12 EST 2000 | Dave F
Guo: You want to know: 1 Can I use water as the solvent in an ultrasonic machine to remove solder paste from PCB? Continuing from Jason�s comments: Sure you can use water as the solvent to remove solder paste from PCB, but recognize that some flu
Electronics Forum | Wed Jul 02 03:12:31 EDT 2003 | Joanna
We have been having problems with solder paste balls around fine pitch ICs and have decided that cleaning the boards in an ultra sonic cleaner may reomove these solder balls. However we are worried that the ultrasonic cleaning process may damage the
Electronics Forum | Tue May 20 09:03:31 EDT 2003 | davef
First, it is very difficult to properly clean under devices like yours. Second, your ultrasonic cleaner should not be damaging or loosening encapsulated components. It sounds like: * Cleaner is not of the proper type for cleaning electrics. * Cle
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