Electronics Forum: contaminants (Page 1 of 149)

Ionic contamination vs selective soldering ?

Electronics Forum | Mon Mar 17 18:37:59 EDT 2008 | aqueous

We manufacture both bulk and localized ionic contamination testers. My answer is from the perspective of the cleanliness testing method. The issue with all bulk ionic contamination testers (Ionagraph, Omegameter, Zero-Ion), is that they test the en

Re: Approach To Contamination Testing Of PCBs

Electronics Forum | Thu May 14 19:05:02 EDT 1998 | Mike Konrad

Dave, Ionic contamination testers are considered to be a valuable tool to determine the cleanliness of both bare boards and post solder boards. There are some instances when SIR testing is more suitable for determining cleanliness than ionic contamin

Ionic Contaminate Testing (time or auto terminate)

Electronics Forum | Thu Sep 02 16:12:51 EDT 2004 | Mike Konrad

Hi -K We are a manufacturer of ionic contamination testers (not yours). In most cases, automatic mode is appropriate. In some instances however, you may need extra time to �release� entrapped contamination from the sample. Automatic mode is not a

Lead free contamination at reflow

Electronics Forum | Mon May 15 11:03:13 EDT 2006 | Pitt Bull

Can lead free components/assemblies be contaminated if reflowed in a reflow oven for leaded process?

Solder contamination on Golden Finger

Electronics Forum | Thu Aug 16 13:06:59 EDT 2007 | shing

Will solder contamination related to PCB's surface finishing?

Ionic Contamination Testing

Electronics Forum | Mon Nov 06 13:14:10 EST 2017 | rdmarcga

Do I need to have an Ionic Contamination tester if my process is no-clean?

Golden Ground Pad Contamination with Solder

Electronics Forum | Thu Nov 16 23:05:40 EST 2017 | slah6678

What is the IPC Spec for Golden Ground Pad Contamination with Solder ? Especially for Automotive product.

Help with dewetting

Electronics Forum | Tue May 25 11:37:50 EDT 2010 | davef

Where on the assembly is the dewetting occurring? Factors that influence dewetting usually involve non-ionic contamination such as: * Residues from board manufacture including silicone surfactants from solder resist & HASL rinse contamination * Comp

CONTAMINATION IN PCB

Electronics Forum | Fri Nov 24 11:21:06 EST 2000 | Ramon I Garcia C

HI GUYS: COULD SOMEBODY ELSE SAID ME WHERE TEST THE CONTAMINATION IN BOARDS,NOW I HAVE A PROBLEM WITH SOLDER WAVE PROCESS,THERE ISN�T FLOW ON THRU HOLE. AND I THINK MAYBE IS CONTAMINATION IN PCB. THANKS. RAMON I

contamination on feedthru wires

Electronics Forum | Mon Nov 13 11:31:10 EST 2000 | John Rep

I am having a problem with wetting on some feedthru wires. The problem seems to be contamination on the wires, due to the fact that the problem seems to be wire lot dependent. I have analysed it using SEM and come up with very little. Is there ano

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