Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Wave Solder Troubleshooting Chart is on SMTnet

Brian Doyle

#19097

Wave Solder Troubleshooting Chart is on SMTnet now | 7 March, 2002

Sorry about creating a new thread, but I wanted to make sure that this didn't get buried.

I was sent the files and have posted them to the library.

http://www.smtnet.com/library/index.cfm?fuseaction=view_article&article_id=1077

There are three files in a single zipped file. If you need an unzip program go to http://www.winzip.com

The three file types contained in there require Microsoft Word, Microsoft Powerpoint, and Adobe PDF viewer.

Also as a note, you could upload anything like this in the library at any time. The maximum file size is 1.4 megabytes. Basically if it'll fit on a floppy disc you can put it in the library. That way you can write a summary of it.

reply »

Alex K.

#19112

Wave Solder Troubleshooting Chart is on SMTnet now | 10 March, 2002

Tahnk you for posting the charts.

They look very useful, but I have a silly question: In reflow problems > What is "leaching" ? > What is "Halo effect" ?

reply »

#19115

Wave Solder Troubleshooting Chart is on SMTnet now | 11 March, 2002

> Tahnk you for posting the charts. > > They look > very useful, but I have a silly question: In > reflow problems _ What is "leaching" ?

Dissolution of the component metallisation into the liquid solder. _ > What is "Halo effect" ?

"...a light area around holes or other machined areas on or below the surface of the base material." IPC-610-C, 10.2.4

Commonly indicative of delamination due to undue physical stress. I don't recall seeing this phenomenon except around tooling holes that were undersized and the operators decided it was their responsibility to ream 'em out with a busted drill bit and tap handle. :

reply »

#19125

Wave Solder Troubleshooting Chart is on SMTnet now | 12 March, 2002

The fine SMTnet Library has several "terms & definitions" documents that may be helpful.

reply »

reflow oven profiler

SMT Machines