Technical Library | 2017-12-11 22:31:06.0
Typical printed circuit board assemblies (PCBAs) processed by reflow, wave, or selective wave soldering were analysed for typical levels of process related residues, resulting from a specific or combination of soldering process. Typical solder flux residue distribution pattern, composition, and concentration are profiled and reported. Presence of localized flux residues were visualized using a commercial Residue RAT gel test and chemical structure was identified by FT-IR, while the concentration was measured using ion chromatography, and the electrical properties of the extracts were determined by measuring the leak current using a twin platinum electrode setup. Localized extraction of residue was carried out using a commercial C3 extraction system. Results clearly show that the amount and distribution of flux residues are a function of the soldering process, and the level can be reduced by an appropriate cleaning. Selective soldering process generates significantly higher levels of residues compared to the wave and reflow process. For conformal coated PCBAs, the contamination levels generated from the tested wave and selective soldering process are found to be enough to generate blisters under exposure to high humidity levels.
Industry News | 2010-07-16 16:12:26.0
Krayden, Inc., a leading distributor of engineered materials, announces that it received the Dow Corning Electronics 2009 Distributor of the Year award during a ceremony that was held on May 19, 2010 at its headquarters in Denver. This is the second consecutive year Krayden, Inc. has earned this award.
Technical Library | 2016-09-08 16:27:49.0
In this investigation a test matrix was completed utilizing 900 electrodes (small circuit board with parallel copper traces on FR-4 with LPI soldermask at 6, 10 and 50 mil spacing): 12 ionic contaminants were applied in five concentrations to three different spaced electrodes with five replicas each (three different bare copper trace spacing / five replications of each with five levels of ionic concentration). The investigation was to assess the electrical response under controlled heat and humidity conditions of the known applied contamination to electrodes, using the IPC SIR (surface insulation resistance) J-STD 001 limits and determine at what level of contamination and spacing the ionic / organic residue has a failing effect on SIR.
Industry News | 2006-09-07 04:57:00.0
Toronto, Ontario Canada - (For immediate release) � September 6, 2006 4:00 PM EST
Industry News | 2012-10-03 16:39:08.0
Aqueous Technologies Corpannounces that CEO Michael Konrad will present at the upcoming Long Island SMTA Expo and Technical Forum.
Industry News | 2013-01-12 12:44:55.0
Aculon announces the launch of their latest generation of stencil coating technology. Aculon’s proprietary technology treats the underside of stencils to make them fluxophobic i.e. repels flux and oils.
Technical Library | 2017-07-13 16:16:27.0
Controlled humidity and temperature controlled surface insulation resistance (SIR) measurements of flux covered test vehicles, subject to a direct current (D.C.) bias voltage are recognized by a number of global standards organizations as the preferred method to determine if no clean solder paste and wave soldering flux residues are suitable for reliable electronic assemblies. The IPC, Japanese Industry Standard (JIS), Deutsches Institut fur Normung (DIN) and International Electrical Commission (IEC) all have industry reviewed standards using similar variations of this measurement. (...) This study will compare the results from testing two solder pastes using the IPC-J-STD-004B, IPC TM-650 2.6.3.7 surface insulation resistance test, and IPC TM-650 2.3.25 in an attempt to investigate the correlation of ROSE methods as predictors of electronic assembly electrical reliability.
Industry News | 2010-11-04 13:27:43.0
Bentek Solar, a leader in the design and manufacturing of optimized Configure-To-Order solar combiners, re-combiners and solar safety systems, announces that several installers and integrators have selected the Bentek Solar leading-edge Multiple Disconnect Safety System (MDSS).
Industry News | 2015-01-21 19:04:45.0
Aqueous Technologies will exhibit in Booth #1549 at the IPC APEX EXPO, scheduled to take place Feb. 24-26, 2015 at the San Diego Convention Center in California.
Industry News | 2009-04-23 20:43:27.0
RANCHO CUCAMONGA, CA � April 2009 � Aqueous Technologies Corp. announces the publication of its newest video presentation, �An Introduction to the Zero-Ion G3 Ionic Contamination Tester.�
