Electronics Forum | Wed Sep 03 11:42:21 EDT 2008 | robinj
If the tarnish is really dark, it is very difficult to remove. Since it is yellowish it is only in the early stages. Replating will definitely work. I have used sulfuric acid based cleaners to remove this yellowish color. But rinse well and dry quick
Electronics Forum | Mon Aug 24 04:46:54 EDT 2009 | joannetjy
Hi Radek, Thanks for your reply. I use this flux with manual soldering process for the product. Is this flux suitable for manual soldering? or it is only for wave soldering? I have sent the board for analysis, and the report shown that the white res
Electronics Forum | Thu Jun 06 10:05:57 EDT 2013 | azhiker
OK guys, we got our Adipic acid. What is the preferred methode of applying it? a) Nozzle mounted, momentarily turn off wave and then brush? Or b)coat nozzle with the acid then mount it and turn wave on? By the way, we are using Indium flux WF-994
Electronics Forum | Fri Jan 22 13:22:18 EST 2021 | davidhillman
Hi Graham - brite acid tin gets it "shiny" appearance due to codeposited organic material in the tin plating. The codeposited materials volatilize during the soldering process causing a ton of voids. Brite acid tin plating should not be used as a sol
Electronics Forum | Sun Feb 23 14:32:42 EST 2003 | davef
Sources of sulphur in PCB fabrication are: * Some locales have high H2S concentrations in the air. * Metal etching steps that use sulfuric acid or a sulfonated buffering compound may result in sulfate residues. * Sulfates can come from contact with
Electronics Forum | Mon Jan 07 13:07:11 EST 2008 | chef
All must be cautioned when messing with acids. Of course, neutralization is required. ("ADD ACID TO WATER", says the wise mans daughter). But at what cost to do the job right? Theoretically, anythings possible. Have messed with acids for soldering an
Electronics Forum | Tue Jun 26 19:51:31 EDT 2001 | davef
Rosin. A hard, natural resin, consisting of abietic acid [and pimaric acids in Europe] and their isomers, some fatty acids, and terepene hydrocarbons. Rosin is extracted from pine tree stumps. It�s an organic material distilled from oleoresin in p
Electronics Forum | Thu Nov 13 17:18:11 EST 2003 | davef
First, don�t get distracted by �OA� and �NC� formulations. This is nomenclature. We want to discuss the issue of �activity�. J-STD-004 "Requirements for Soldering Fluxes" classifies fluxes by their chemical composition, activity level and halide c
Electronics Forum | Tue Dec 28 12:26:22 EST 1999 | Christopher Lampron
Rick, Does the ultrasonic cleaning system that you use reuse the same water for each cleaning cycle? I have had a similar problem in the past using a Brandson ultrasonic cleaner and water soluable flux. The problem was the buildup of flux in the clea
Electronics Forum | Fri Jul 16 22:55:17 EDT 1999 | Vic Lau
| My wavesoldering machine is equipped with Titanium finger. What composition of Titanium alloy used ? Any grade difference, and which is the best grade for long life ? An info or website concerning it. Dear Barden, Sorry, I am not familiar with
