Check out today's I-Connect007 Daily Newsletter.
June 5, 2020 

Beyond Design: Predicting and Measuring Impedance

Barry Olney, In-Circuit Design Pty. Ltd.

To control the impedance of high-speed signal interconnects, one first needs to predict the impedance of a specific multilayer stackup configuration. A precision field solver is arguably the most accurate way to calculate the single-ended, edge-coupled, and broadside-coupled differential impedance. Once the board is fabricated, the transmission lines need to be physically measured to determine the actual impedance to qualify the board.

The most common method for measuring PCB trace impedance is to use a time-domain reflectometer (TDR). This measures the impedance in the time domain. However, a far more accurate method is to use a vector network analyzer (VNA), which operates in the frequency domain... More >

 
Industry News
 
 

 

Where The Jobs Are: The I-Connect007 Help Wanted Pages

I-Connect007 Editorial Team

If you’re looking for a career in the PCB industry—design, fabrication, or assembly—the I-Connect007 Career Opportunities section, jobConnect007.com is the first place you should look.

In the pages of I-Connect007’s monthly magazines and newsletters, there are job openings for positions that span the entire circuit board supply chain: senior PCB designer, laser drilling and direct imaging service engineer, development chemist, SMT field technician, IPC master instructor, and sales representative, just to name a few.

Once you find a position that’s a perfect fit, you can submit your resume directly to the hiring manager simply by clicking on the ad... More >

 
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New Book Highlights Methods to Ensure Reliability in Your Assembly Process - Today’s high-reliability electronics require accurate test methods. Learn to achieve electrochemical reliability with the latest offering in the I-007eBook library: The Printed Circuit Assembler's Guide to... Process Validation. Respected author Graham Naisbitt of Gen3 explores how establishing acceptable electrochemical reliability can be achieved by using both CAF and SIR testing.
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The I-Connect007 Top Five Stories of the Week

I-Connect007 Editorial Team

It has been a busy week! In case you missed them, here are the five top items of the week collected from all of I-Connect007’s various news sources and publications, including Design007, PCB007, SMT007, The Daily Newsletter, and our weekly newsletters for SMT007, Design007, and Milaero007.

Ambarella Adopts Cadence Clarity 3D Solver for AI Vision Processor Development
Cadence Design Systems Inc. announced that Ambarella Inc... More >

 
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Blackfox to Offer Online IPC Training & Certification - Due to the ongoing COVID-19 pandemic, Blackfox will offer online IPC training and certification beginning in mid-April. The following lecture-based classes will be offered remotely for CIS, CSE and CIT certification: IPC-A-610, IPC/WHMA-A-620, IPC-A-600 and IPC-6012. We will be using web conferencing with a live Master IPC Trainer to deliver IPC training. Certification testing will be conducted through the IPC EDGE 2.0 platform, offer remotely proctored exams. Click for more info.
 
 
EIN - Electronics Industry News Highlights

 
Featured Columnists

 
   
 
Promotional

The Printed Circuit Designer's Guide to...Producing the Perfect Data Package
For PCB designers, producing a comprehensive data package is crucial. This book describes exactly what a PCB fabricator requires in a design output package and explains the consequences of providing incomplete or inaccurate information. Learn effective ways to eliminate discrepancies and errors, ensure project success, and ultimately reduce costs and wasted time. Download a free copy!
 

 
   
 
JobCONNECT007 Featured Listings

Chief Technology Officer

SOMACIS Inc. is a well-established (over 45 years in business), advanced technology, high- reliability PCB manufacturer, located in Poway, California...

Apply Now

 
Image Department Operator

Alpha Circuit Corporation is a manufacturer of printed circuit boards located in Elmhurst, IL.  We are currently seeking an operator in our Image department...

Apply Now

 

More Job Opportunities

 
   
 
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