SMTA Silicon Valley Chapter Meeting


2:15 - 3:00pm: Sign in table  
3:00 - 3:30pm: Two Materials, One Board:
High Frequency Hybrid Constructions
Jonathan Weldon
Principal Investigator, Du Pont Electronics and Imaging

1st Speaker - Abstract & Bio

The ever-increasing demand for higher data rates and higher operating frequencies in traditional applications has pushed PCB materials to their performance limit.

Additionally, introduction of advanced technologies such as phased array antennas or millimeter wave radars into the consumer market has created a plethora of similar performance, cost, and supply chain challenges.  Technical concerns such as high latency (high dielectric constant), skew (glass reinforcement), and high insertion loss (high loss tangent and copper roughness) are just some of the issues that must be overcome when designing with traditional laminates.  Solving these problems often requires either high cost materials, yield losses in manufacturing, or a complete redesign of the high frequency PCB section; all of which is highly undesirable in a cost sensitive application.  The question at hand then, is not just how do we solve these problems, but how do we solve these problems without breaking the bank or designing something not manufacturable?  To that end, this topic will discuss design concepts and material choices for hybrid PCB constructions that will not only satisfy performance requirements but also help minimize cost through deliberate combination of both high performance and commodity grade materials.


Jonathan Weldon is a Principal Investigator in DuPont’s Electronics and Imaging business.  In this role, he focuses on the characterization of high frequency materials along with the design of RF systems and interconnects.  Jonathan received his B.S. in Electrical Engineering from Texas Christian University and his M.S. in Electrical Engineering from Wright State University. He has more than a decade of experience in the development of radio frequency (RF) systems for defense applications through his time as an officer in the United States Air Force and an engineer at Sandia National Laboratories.

3:30 -
3:45 pm
Q&A 1st speaker  
3:45 -
4:15 pm
Materials and Techniques for Soldering in 5G Architecture Seth Homer         

2nd Speaker - Abstract & Bio

This presentation discusses key soldering material selections as well as techniques that are critical to the performance and reliability of 5G architecture.

Topics to be discussed include paste and preform selections and a hybrid solution for QFN voiding.


Seth Homer has worked with Indium Corporation for more than 25 years, serving in both manufacturing operations and marketing roles. He is responsible for many of the products within the engineered solders product offering especially as it relates to RF Infrastructure and Power Electronics industries. He travels to customer sites globally to gain industry insight and works closely with Indium Corporation’s manufacturing teams to help support current production demand and future product development.
4:15 -
4:30 pm
Q&A 2nd speaker  
4:30 -
4:45 pm
Soft Drinks and Hors D’Oeuvres
4:45 -
5:15 pm
5G - Tackling some real life problems Eran Dor
CEO of CRadar.Ai

3rd Speaker - Abstract & Bio

The 5th generation of cellular communications holds countless promises that many people are looking forward to. However...

However, once the hype fades away and the dust settles, it will be time to deliver on these promises and scrutinize the tradeoffs. This talk will examine the pro's and con's associated with the different frequency bands in terms of RF performance, the risks and benefits of drastically increasing the amount of 5G base stations / small cells as well as examining how PCB manufacturing and SMT assembly may influence RF performance.


Entrepreneur, wireless enthusiast, mentor and tirelessly curious synergy creator, Eran Dor has spent more than 20 years driving innovation in various wireless industry verticals and is currently the CEO of CRadar.Ai, revolutionizing how Radars see the world. In addition, Eran serves on advisory boards of other startups. Eran previously led large scale complex multi-radio designs for Wi-Fi/IoT networks, Point-to-Point radio links and Satellite payloads valued at over $1B. Eran also studies and practices leadership and mentoring skills with the goal of bringing out the best in people and teams.
5:15 -
5:30 pm
Q&A 3rd speaker  
5:30 -
5:45 pm
Thank you / Wrap-up


Thursday, May 30, 2019

Sign In/Registration:  2:15pm-3:00pm

3:00pm – 6:00pm

SMTA Members: Free; Non-Members: $20
(By cash or check payable to ‘SMTA Silicon Valley Chapter’ at the door)

SMTA Membership
(Individual: $95 per year, Membership sign up at

(Light refreshments to be served during breaks and registration.)
Comet Group Lab One
3055 Orchard Dr., Suite 150, San Jose, CA 95134