Electronics Forum | Thu Jun 24 11:41:10 EDT 1999 | John Thorup
| Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody hel
Electronics Forum | Fri Aug 21 13:43:13 EDT 1998 | Ben Salisbury
| Hello everyone, | I am currently running a gold plated SMT board and am experiencing tiny solder balls between the pads and the masking between the 20 mil pitch devices. I'm looking at these boards with a 60x microscope. IPC-610 say's any visible s
Electronics Forum | Mon Apr 17 18:29:03 EDT 2006 | lit
There is learning on all brands requiring fine tuning the test parameters. The first point is not to allow defects to escape. Many brands can do a good job with preventing escapes. The struggle with all the brands becomes false calls. The companies r
Electronics Forum | Tue Apr 13 09:46:39 EDT 2004 | davef
Now, that's different. We misunderstood the problem from your original descrtiption. We thought the voids were showing at the via in the pad. Now, we understand the voids appear to be in the solder balls. Suggestions are: * Search the SMTnet Arch
Electronics Forum | Mon Oct 25 17:55:47 EDT 2004 | Mike
Circuit Science, Inc. Plymouth, MN Mike Dupont / Sale Mgr. www.circuitscience.com miked@circuitscience.com Please send me an email and we will take a look at your pcb. We have been in the PCB industry for over 30 years. 2 layer boards - 18 lay
Electronics Forum | Fri Jul 09 20:54:58 EDT 2010 | bandjwet
There is no such thing as "IPCA610 compliance". The correct way of looking at this that the boards were inspected to IPC Class I, II or III Revision XX (current Rev is "E") and met all of the criteria. From a commercial standpoint it would greatly
Electronics Forum | Mon Sep 26 16:43:18 EDT 2011 | action_101
I am happy that you work in a shop that can build boards right the first time on a consistent basis. Unfortunately, I would say that every place I have been at, we have had a hard time meeting class III standards day in and day out without some kind
Electronics Forum | Thu Oct 18 11:08:22 EDT 2012 | scottp
Since we follow IPC Class III, I've done experiments turning N2 on and off and measuring void level with both SnPb and SAC305 solder. In both cases there was a statistically significant, measurable increase in voids with N2, but it wasn't significan
Electronics Forum | Thu Jun 24 12:43:08 EDT 1999 | Earl Moon
| | Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody h
Electronics Forum | Tue May 05 13:44:57 EDT 1998 | Mark Mitchell
Mr. Desrochers; Philips EMT Americas offers a three day course entitled, "Introduction to SMT Manufacturing". The course addresses all major factors that influence the automated SMT assembly process. Topics that are discussed in the course are list
