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  • Thermal Vias are Ineffective. Here’s Why.

    Thermal Vias are Ineffective. Here’s Why.

    Adding thermal vias can take up valuable board space with little benefit.
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  • Connecting the Industry, from Boards to Assemblies

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    Exploring the Impact of AI

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  • A Journey in Rigid-Flex Design

    A Journey in Rigid-Flex Design

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  • Creating the Ultra Library

    Creating the Ultra Library

    Building and maintaining what's said to be the world's largest CAD database requires strong relationships.
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MAGAZINE

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Category: White Papers/e-Books

Everything you ever wanted to know about PCB transmission lines – and more – in a digestible format with just the right amount of math to back up the illuminating practical illustrations.

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Category: White Papers/e-Books

High-Speed Constraint Values and PCB Layout MethodsPfeil secondedition web

by Charles Pfeil (Forward by Rick Hartley)

 

How to Receive Your Copy

To download your free copy of this new e-book and the Constraint Value Calculator today, please submit your name and a valid email address. Be sure to click the Request Download Link button. A link to the downloads will be emailed to the address provided.

 

 

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About the Book

High-Speed Constraint Values and PCB Layout Methods encompasses lessons learned from Charles Pfeil’s five decades in PCB design. It covers critical length, reference planes, timing, skew, crosstalk, coupling, vias, and routing. The book provides the underlying equations and specializes in practical solutions for real-life signal problems.

Constraint Value Calculator

This download includes the Constraint Value Calculator.

The Constraint Value Calculator is an Excel-based worksheet developed by Charles Pfeil. The faster the edge rate, the more likely the signal will have timing, crosstalk and signal integrity problems. Also, the constraint values become tighter as the edge rate increases. As such, the Constraint Value Calculator provides rules with appropriate constraint values for high-speed designs. It includes options for edge rate, dielectric constant, and height between the layers to determine constraint values.

About the Author

Charles Pfeil 2013

Charles Pfeil has spent over 50 years in the PCB industry as a designer, owner of a service bureau, and in engineering management and product definition roles at Racal-Redac, ASI, Cadence, PADS, VeriBest, Mentor Graphics, and Altium.

Most of his career was at Mentor Graphics, where he was a software architect focused on advanced development of PCB design tools. He was the original product architect of Expedition PCB, and an inventor of Team PCB, XtremePCB, XtremeAR, and the Sketch Router. He previously authored BGA Breakouts and Routing.

He was inducted into The Dieter Bergman Hall of Fame for PCB Design in 2013.

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Category: White Papers/e-Books

http://www.tech-etch.com/flex/High_Reliability_Medical_Flexible_Circuits.pdf

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Category: White Papers/e-Books

Over the last few decades, in-circuit test (ICT) has been integral to the growth of the electronics industry. Now though, because of rapidly accelerating speeds and new levels of complexity, chips, circuit boards and systems are moving beyond the reach of the intrusive probes and bedof-nails fixtures that ICT depends on. This white paper explains the technical and economic factors that are contributing to the gradual but inevitable demise of ICT and how non-intrusive board test (NBT) has emerged as a more cost-effective and thorough test technology for the manufacturing floor. Certainly ICT will continue to have its place, albeit current trends indicate it will soon be relegated to special case testing or for testing rudimentary circuit board designs. Simply stated, electronics manufacturers (original equipment manufacturers or original design manufacturers) are finding it increasingly difficult to make a credible business case for ICT, especially when NBT offers better test coverage and a lower cost structure.

http://www.asset-intertech.com/Media/en-US/Documents/Whitepapers/Solving_the_problem_of_diminishing_test_coverage_from_ICT.pdf

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White Papers/e-Books 11

For copies of the following white papers, please click on the paper title below, then click on the white paper title within the text box.