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62 The PCB Magazine • June 2014 THE DEgREES oF NICKEL HyPER-CoRRoSIoN AND MITIgATIoN STRATEgIES continues Supplying Unusual Flex to Meet Customers' Needs by Real Time with...IPC APEX EXPO 2014 joe Fjelstad interviews Pete uka, director of technology at Q-Flex inc about the challenges of supplying unusual flex circuits and specialty products, such as a recently completed 15-ft long flex and a flex circuit smaller than a grain of rice! realtimewith.com CliCk To View vIDEO InTERvIEW realized. However, attempting to use lower gold concentrations without an improved process in general will lead to disaster. There are other factors that influence the potential for corrosion spikes. These will be presented in a future column of Trouble in Your Tank. PCB michael carano is with omg electronic chemicals, a devel- oper and provider of processes and materials for the electron- ics industry supply chain. to read past columns, or to con- tact the author, click here. Figure 4: lower gold content solution with electroless nickel process with tighter phosphorous content range. note: no corrosion spikes.

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