Electronics Forum: contains (Page 57 of 81)

Re: PCB washing

Electronics Forum | Sat Feb 05 21:58:08 EST 2000 | Stu Leech

I agree with all of the previous comments. 1) Here are a few things to keep in mind when cleaning with water. To effectively clean, any liquid must wet the surface. By itself, water has a surface tension of 70 dynes/square cm. This is relaively hig

Re: Corroding Solder Joints

Electronics Forum | Tue Dec 28 10:57:53 EST 1999 | Amy Castor

I have tried the water soluble flux and the aqueous cleaners but I got the same results you did; horrible corrosion and a white flaky mess. I know exactly what you're talking about. We do a lot of hand soldering around here, and the magical solutio

Re: ESD safe handling baskets

Electronics Forum | Wed Nov 10 15:08:18 EST 1999 | John Thorup

I would be afraid to have this kind of basket holding my boards. Yes, in most cases, you would not get damage if the boards were closed inside of a good, metalized (silver colored) ESD protective bag. The problem is that the boards usually have to c

Re: Tombstone

Electronics Forum | Tue Sep 14 10:54:37 EDT 1999 | Scott Davies

Can anyone out there pls enlighten me on how to solve chip tombstone defects. I am running a board with a lot of 0603 chip. i had fine the profile and the alignment, but it still happen randomly on the board itself. Is there any other way to sol

Re: CEERIS Benchmarking Studies

Electronics Forum | Fri Aug 20 09:51:44 EDT 1999 | Dave J

CEERIS has been sending me flyers for some time, touting the value of their various studies and insights gained from digesting the facts contained within. The topics are indeed of great interest. My question is to whomever of you has purchased on

Re: Parts Packaging Data

Electronics Forum | Thu Aug 05 04:32:21 EDT 1999 | Wolfgang Busko

I am currently in the process of setting up an SMD Parts Package Database. The database will contain dimensional information to be used by the placement machinery to process parts (I.E Package Type, # of Leads, Lead dimensions, Lead pitch(s), etc.

Re: Parts Packaging Data

Electronics Forum | Thu Aug 05 15:26:42 EDT 1999 | Brian E. Steelglove

I am currently in the process of setting up an SMD Parts Package Database. The database will contain dimensional information to be used by the placement machinery to process parts (I.E Package Type, # of Leads, Lead dimensions, Lead pitch(s), etc

Re: handling components for rework

Electronics Forum | Mon Jul 26 18:03:45 EDT 1999 | John Thorup

We only do rework with SMT components or a small amount of SMT work. We are having a hard time keeping the components safe throughout the handling process of removing one or two components, and issuing them to an operator for processing or inspect

Re: Solder Paste from 500 gram tubes.

Electronics Forum | Tue Jul 20 09:20:39 EDT 1999 | Dave F

I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste

Re: Solder Paste from 500 gram tubes.

Electronics Forum | Wed Jul 21 01:24:06 EDT 1999 | Scott McKee

I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk paste


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