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August 2017 • The PCB Magazine 103 5 All About Flex: Etchback on Type 3 and Type 4 Flexible Circuits Through-hole etchback is a re- quirement that is sometimes specified on medical, military and aerospace procurement doc- uments for multilayer flexible cir- cuits and combination multilayer flex/rigid board circuits. It specif- ically relates to the copper plated through-holes and the relative dimensions between the dielectric layers and copper layers. 6 Happy's Essential Skills: Tip of the Month—The NIST/SEMATECH e-Handbook of Statistical Methods In the 1990s, the National Bu- reau of Standards was distrib- uting a popular statistical docu- ment, Handbook 91. A request by Patrick Spagon of the Statis- tical Methods Group of SEMAT- ECH to update the NBS Hand- book 91, Experimental Statistics, has resulted in a new web-based statistical handbook including sta- tistical software. 7 The Significance of the PCB in the Value Chain of the European EMS Industry At SMT Nuremberg, Pete Star- key meets with Dieter Weiss, who comments upon the sig- nificance of the PCB in the val- ue chain of the European EMS industry, and looks to a future where we embrace an open- minded attitude and a willingness to work together. 8 Megasonic Acoustic Surface Treatment Process for Enhanced Copper Electrodeposition in Via Interconnects A printed circuit board is populated with a multitude of electro-mechanical com- ponents plus various active and passive devices such as transistors, capacitors, in- ductors and resistors, which enable the functionality and assembly of the PCB. 9 Review of the 2017 IPC Reliability Forum IPC continues to lead our industry by exam- ple with their inaugural Reliability Forum, held in Chicago in April. The event was focused on manufacturing high-performance products and featured industry royalty from both a speaker and audience standpoint. J Jill Scadden Joins Advanced Circuits as Business Development Manager Advanced Circuits welcomes Jill Scadden as business develop- ment manager. She will be re- sponsible for discovering new business opportunities and en- hancing Advanced Circuits' of- ferings by working closely with customers and prospects to create customized solutions for their unique PCB fabrication needs. For the latest PCB news and information, visit: PCB007.com

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