Symposium Conference Proceedings

Real Time Control of Multi-Phase Electronic Assembly Cleaning Agents

Authors: Ram Wissel, Mike Bixenman, DBA, Jason Chan & T.C. Loy
Company: Kyzen Corporation
Date Published: 4/14/2015   Conference: Symposium

Abstract: Aqueous cleaning fluids are engineered to remove the most challenging flux residues from electronic assemblies of varying complexities. Multiple equipment configurations, such as conveyorized inline or batch cabinet, are commonly employed to deliver the cleaning agent to the device at elevated temperatures often using pressurized spray impingement. Having the ideal amount of chemistry in the wash solution is critical to maintaining an efficient, high yield cleaning process. Cleaning systems can be very dynamic processes, with wash concentration changing significantly in only a few hours in some cases. Real time monitoring is relatively straightforward; however, monitoring and controlling a wash bath is a highly complex achievement. The purpose of this research is to present advanced technology for monitoring, controlling and measuring contamination levels. The goal of this technology is to provide the assembler with real time data for controlling the cleaning process.

Key Words: 

Electronic assembly defluxing, Concentration measurement, Soil loading, Differential density, Sonic velocity, Refractive index, Flux cleaning

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