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4 The PCB Design Magazine • April 2015 Looking Below the Surface — IPC Plating Sub-committee 4-14: Surface Finish Specifications by George Milad The Future of Nickel in Nickel/Palladium/Gold Final Finishes by Rick Nichols For years, hot air solder leveling was the predominant surface finish in the PCB industry. But now, there's a veritable alphabet soup of available surface finishes, and each has its own advantages and disadvantages. This month, we focus on the latest in PCB surface finishes, with articles from George Milad and Rick Nichols, as well as columns and articles from our regular contributors. 10 18 Featured Content april 2015 This issue: Surface finiSheS