ne Impedance Calculator www.icd.com.au
Differential Impedance Calculator, Transmission Line Impedance Calculator, embedded Stripline, Microstrip, Impedance Calculator
Dielectric Materials Library
With the latest release (Jan 2017), new materials have been incorporated into the Dielectric Materials Library to bring the total count to 30,700. For a complete list of the manufacturers and products included in the library please click here.
There are also a number of ultra-thin Embedded Capacitor Materials - Planar Capacitors and Flex materials.
What is the accuracy of the iCD Stackup Planner?
Advanced Layout Solutions, in the UK, have done a comparison of a number of impedance calculators to judge their accuracy. iCD edited their drawing to include data from the iCD Stackup Planner using exactly the same stripline parameters. The results are extremely close, with the iCD Stackup Planner a mere 0.8% off Polar's Si8000 which was used as the benchmark.
Dr Eric Bogatin published an article "The Absolute Accuracy of 2D Field Solvers" in the July 2004 edition of Printed Circuit Design & Manufacturing magazine. In this article, Bogatin compared the absolute error of the calculated impedance of microstrip traces for HyperLynx and Si8000 using the Ansoft 2D field solver as the reference. iCD edited the above drawing to include data from the iCD Stackup Planner given the same parameters. Again, the results are very close, with the ICD Stackup Planner performing better overall than Mentor's HyperLynx and Polar's Si8000 compared to Ansoft.
Dr Eric Bogatin and Gaurav Narula published a column "Field Solvers for Transmission Line Analysis: How Similar are They?" in the December 2015 edition of Printed Circuit Design & Manufacturing magazine. In this column, six different field solvers (Polar Si9000e, ADS, QUCS, HyperLynx, Simbeor THZ and Sonnet) were compared. iCD edited the diagram to insert the iCD Stackup Planner (red), given the same parameters, and again found the results to be very close.
What our customers are saying:
I am very pleased with the recent CPW update, as it
will greatly help me keep as much copper as possible without impacting
By the way, I just finished a 16 Layer board with a
ton of diff traces...98 to be exact. The planners were invaluable
for this layout design. My board shop had some minor changes to the
dielectric thickness on a couple of layers to
meet IPC class 2, but that was it. Testing is about complete with only a
resistor value change. SI and PI analysis
was as expected, no issues. Thanks again Barry for an outstanding product.
Never got such enormous support like you did. Thank you very, very much.
The ICD Stackup Planner has proven very useful especially for highlighting the affects of builds and other amendments on the calculated impedance to the customers. It is both flexible and concise with only a very short learning curve required to use confidently.
GSPK Circuits Ltd UK - Global supplier and manufacturer of printed circuit boards
I purchased the ICD Stackup Planner and just love it. I learned the value of preplanning my layer stack for Zo and Zdiff by using the evaluation software. Thanks again for a super product.
DCA - Digital Media Solutions
The design of reliable multilayer PCB’s becomes more critical as signal edge rates increase in speed. Traces interconnecting digital devices form transmission lines that are a vital part of the circuit design. Determining the trace impedance allows for the correct termination of the transmission lines. Boards designed with this in mind will demonstrate superior signal integrity and lower electromagnetic emissions.
The ICD Stackup Planner is an easy to use, affordable tool that provides a clear representation of the PCB stackup and interactively calculates characteristic and differential impedance with adequate precision.
When the impedance is critical, the accuracy becomes limited by the PCB fabricator’s process tolerances and the material characteristics. However, the ICD Stackup Planner provides a ready reference to a wide range of PCB materials, used by most fabricators, and allows the user to add their own material library entries.
This tool is essential for both engineering design teams and PCB fabricators and I highly recommend it.
R. D. Jeffery PhD
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