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September 2016 • SMT Magazine 45 Acknowledgments The authors wish to acknowledge the valu- able contributions from the following individ- uals and companies, without which this work would not have been possible: • Dr. Amit Sarkhel, Raytheon Integrated Defense Systems • Tom Rovere, Lockheed Martin • Dr. Ross Wilcoxon, Rockwell Collins • David Vicari, Universal Instruments • Mike Robinson, Judy W. Little, Milea Kammer, and Dr. Joseph Juarez, Honeywell SMT References 1. T. Hester and D. Pinsky, "Tin Whisker Self-Mitigation in Surface Mount Components Attached with Leaded Solder Alloys," SMT Mag- azine, October 2015. 2. Tolerance Intervals for a Normal Distribu- tion. Editor's Note: Appendix A can be found here. David A. Pinsky is Senior Engineer- ing Fellow, Raytheon Integrated De- fense Systems. David Hillman is Rockwell Collins Fellow, Materials & Process Engineer. Thomas J. Hester is Senior Princi- pal Multi-Disciplined Engineer, Com- ponent Engineering, Mechanical & Optical Engineering Center, at Ray- theon Space and Airborne Systems. Dr. Anduin Touw is a Technical Fellow at The Boeing Company. MITIGATION OF PURE TIN RISK BY TIN-LEAD SMT REFLOW According to two new stud- ies released at the recent SC Aerospace Conference & Expo, South Carolina's aerospace in- dustry is trending towards diver- sified and sustainable growth. An economic impact study re- leased by the South Carolina Council on Competitiveness shows that the impact of aero- space on South Carolina's economy has grown to $19 billion, an increase of $2 billion since last mea- sured in 2014. The Council's study finds that for every 10 jobs that are created in the private sector compo- nent of the aerospace cluster in South Carolina, an additional 13 jobs are created elsewhere in the state's economy. The average total compensation for private sector aerospace employees is $70,000 per year, and still far exceeds the state average of $41,338, and the manufacturing industry as a whole, which averages $53,350. The second study released at the conference, the 2016 South- east Manufacturing Study, was conducted by Aviation Week during May and June 2016. Ala- bama, Florida, Georgia, North Carolina and South Carolina participated. The purpose of the study was to better gauge the need for manufacturing workers in the Southeast, the region experiencing the highest rate of growth in terms of manufacturing operations in the Unit- ed States. Respondents to the survey indicate steady in- creases in manufacturing jobs across the board. The six most in-demand job categories in South Carolina's aerospace manufacturing sector (in de- scending order of demand) are: engineering tech- nicians, aircraft painters, production technician, machinist, inspector and A&P mechanic. South Carolina's Aerospace Industry Trends Towards Sustainable Growth