Abstract
Production of printed wiring assemblies (PWAs) free of detrimental residues requires consideration of the packaging technology selected, component designs, assembly layout, and the soldering, fluxing, and cleaning processes. Selection of the cleaning agent and process is itself dependent on the chemistry of the total material system. This includes solder, flux, substrate, solder mask, component, and marking materials as well as miscellaneous process materials and contaminants. This chapter will deal with the relationship of some of these design, material, and process issues and their impact on the cleanability of (and the need to clean) the manufactured PWA.
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References
Tuck, J. “Cleaning Surface-Mounted Assemblies,” Circuits Manufacturing, January 1984, p. 40.
Lermond, D. S. “Key Process Factors for Efficient Fluorosolvent Spray Cleaning of SMAs,” Printed Circuit Assembly, May 1987, p. 22.
Musselman, R. P. “Shear Stress Cleaning of Printed Wiring Boards and Assemblies,” Technical Program Proceedings, NEPCON East, Boston, MA, June 1985, p. 244.
Bonner, J. K. “Effective Cleaning of Surface Mount Assemblies,” Printed Circuit Assembly, August 1988, p. 8.
Willis, R. “SMD Cleaning—A Practical Assessment,” Printed Circuit Assembly, October 1987, p. 9.
Wang, A. E, and K. C. Seghal, “Effects of Wetting and Capillary Action on the Cleaning of SMAs,” Printed Circuit Assembly, August 1988, p. 16.
Cabelka, T. C., and W. Archer. “Critical Free Energy in Wetting: The Key to Maximum Effectiveness in SMA Cleanings,” Surface Mount Assembly, December 1987, p. 20.
Paul, J. T. “Ultrasonic Cleaning—Can Current Technology Meet the SMT Challenges?”, IPC-TP-798, October, 1989.
Gruenwald, F. “Aqueous Cleaning of Reflowed Surface Mount Assemblies,” Technical Program Proceedings, NEPCON West, Anaheim, CA, February 1989, pp. 1024–1036.
Taylor, J. R. “Printed Board Assembly Cleanliness—Standards, Practice and Reliability Considerations,” Seminar: Soldering in Electronic Production, Australian Tin Information Centre, August 1982.
Lermond, D. S. Op. cit., p. 22.
Wolff, M. “High Pressure Spray and Ultrasonic Cleaning for Surface Mount Assemblies,” SMT Forum, December 1987, p. 14.
Elliott, D.A., and J. Gileta. “In-Line High Pressure Solvent Cleaning of Surface Mounted Assemblies—Part II,” Technical Program Proceeding, NEPCON West, Anaheim, CA, February 1987, pp. 7.
Lermond, D. S. Op. cit., p 22.
Beer, F. “Cleanliness Testing of SM Assemblies,” Printed Circuit Assembly, October 1989, pp. 48-51.
Kenyon, W. G. “New Ways to Select and Use Defluxing Solvents,” Technical Program Proceedings NEPCON West, Anaheim, CA, February 1979.
Brous, J. and A. F. Schneider, “Cleaning Surface-Mounted Assemblies with Azeotropic Solvent Mixtures,” Electri-onics, April 1984, p. 54.
Wang, A. E., and K. C. Seghal. Op. cit., p. 40.
Tuck, J. Op. cit. p. 40.
“Ultrasonic Cleaning for Military PWBs,” EMPF TB 0008, U.S. Navy Electronic Manufacturing Productivity Facility, Ridgecrest, CA, Fall 1989.
Elliott, D. A., and J. Gileta. Op. cit., p. 6.
Muir, J. My First Summer in the Sierra, Chapter 6, p. 157 (paperback edition), Houghton Mifflin Co., 1916.
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© 1991 Van Nostrand Reinhold
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Hymes, L. (1991). Design and Process Considerations. In: Hymes, L. (eds) Cleaning Printed Wiring Assemblies in Today’s Environment. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-6967-7_1
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DOI: https://doi.org/10.1007/978-94-011-6967-7_1
Publisher Name: Springer, Dordrecht
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