New Equipment | Assembly Services
Ion Chromatography (IC) and ROSE Cleanliness Testing
Industry News | 2021-03-30 11:46:31.0
KYZEN is pleased to announce that Daniel Gao, Sales Manager – Northern and Western China, will present during the SMTA China East Conference on April 22, 2021. Gao will present "The Relationship Between Cleanliness and Reliability/Durability."
Industry News | 2009-11-01 00:33:04.0
RANCHO CUCAMONGA, CA — October 2009 — Aqueous Technologies Corp. announces the introduction of a full-service contract defluxing and cleanliness testing service in its Southern California facility. Aqueous Technologies’ fleet of award-winning Trident automatic defluxing equipment and Zero-Ion Resistivity of Solvent Extract (ROSE) testers are available for use on any assemblies.
Technical Library | 2023-04-17 21:17:59.0
The purpose of this paper is to evaluate and compare the effectiveness and sensitivity of different cleanliness verification tests for post soldered printed circuit board assemblies (PCBAs) to provide an understanding of current industry practice for ionic contamination detection limits. Design/methodology/approach – PCBAs were subjected to different flux residue cleaning dwell times and cleanliness levels were verified with resistivity of solvent extract, critical cleanliness control (C3) test, and ion chromatography analyses to provide results capable of differentiating different sensitivity levels for each test. Findings – This study provides an understanding of current industry practice for ionic contamination detection using verification tests with different detection sensitivity levels. Some of the available cleanliness monitoring systems, particularly at critical areas of circuitry that are prone to product failure and residue entrapment, may have been overlooked. Research limitations/implications – Only Sn/Pb, clean type flux residue was evaluated. Thus, the current study was not an all encompassing project that is representative of other chemistry-based flux residues. Practical implications – The paper provides a reference that can be used to determine the most suitable and effective verification test for the detection of ionic contamination on PCBAs. Originality/value – Flux residue-related problems have long existed in the industry. The findings presented in this paper give a basic understanding to PCBA manufacturers when they are trying to choose the most suitable and effective verification test for the detection of ionic contamination on their products. Hence, the negative impact of flux residue on the respective product's long-term reliability and performance can be minimized and monitored effectively.
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.
Validity of the IPC R.O.S.E. Method 2.3.25 Researched Validity of the IPC R.O.S.E. Method 2.3.25 Researched This paper researches the effectiveness of the R.O.S.E. cleanliness testing process for dissolving and measuring ionic contaminants from
SMTnet Express, April 29, 2021, Subscribers: 27,195, Companies: 11,344, Users: 26,617 Failure Analysis – Using Ion Chromatography And Ion Chromatography/Mass Spec (IC/MS) Since the 1980s the electronics industry has utilized ion
| http://www.thebranfordgroup.com/dnn3/Auctions/PastSales/tabid/58/Default.aspx
. Featuring (2) 2018 Careddi Supercritical CBD Oil Extraction Machine, Pellet Mill & Ribbon Blender, Farming Equipment, Laptops & IT, & Air Compressor Equipment As Late As 2018 Winchester, KY and Lexington, KY Jabil - Memphis, TN [Online] SOLD - Auction
