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50 The PCB Design Magazine • November 2017 by Andy Shaughnessy I-CONNECT007 Shenzen-based EDADOC, which has been specializing in high-speed PCB design for 14 years, has now expanded to include multiple manufacturing facilities in China, and offices in the U.S. and Japan. The company now of- fers HDI design and manufacturing services for customers around the globe. I recently caught up with EDADOC's Bruce Wu, a designer with 18 years of experience, who also serves as vice chairman of the IPC China Designers Council. I asked him to chime in on his company's HDI processes and some of the current trends he's seeing in HDI. Andy Shaughnessy: Tell us a little bit about your company. Bruce Wu: EDADOC was founded in 2003. We focus primarily on high-speed turn-key PCB ser- vices, including PCB design, fabrication, assem- bly, and parts sourcing. We are now the largest high-speed PCB design bureau in China, with more than 500 engineers on staff. We launched our PCB fabrication business in 2009 and currently have factories located in Shenzhen and Sihui, capable of providing 2-64 layers of PCB fabrication for prototype and mass production. We built the first quick-turn SMT facility in China. We also offer testing and box- building services. Shaughnessy: What percentage of your designs are HDI? Wu: Each year, our company creates over 10,000 single board designs, and HDI PCBs make up 10% of this total. The percentage is not very high, because we make designs for a wide range of industries, including communications, medi- cal equipment, computers, industrial control, aerospace, military, consumer electronics and other segments. HDI is mainly used in thin, light consumer electronics products, but not commonly in communications, medical, aero- space and other fields where reliability is em- phasized. Shaughnessy: Are these primarily for the domes- tic market in China? Wu: At EDADOC, we see demand for HDI tech- nology in the Chinese, North American, and Japanese markets. HDI technology enables the design of end-products that are more minia- turized, while meeting the higher standards EDADOC Discusses HDI Design and Manufacturing FEATURE INTERVIEW

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