![]() Speedstack - Enhanced back drilling support and layer wizard. I use stated formulas given by the IPC or other industry standards is really all I can say.Ī board house called me once claiming that the Saturn PCB Toolkit's numbers were closer than what they got from Polar in their actual measurements so they are pretty accurate.More information on continued support during the present coronavirus situation. I do not know what Polar uses to calculate impedance's on any of their tools. What is the geometry that Saturn considers to estimate the impedance? Not sure where the rest of my reply went: I am sometimes asked why the Saturn PCB Toolkit has a different Z number here or there with respect to Polar and the answer is I have no idea. Length of the section with impedance mismatch. Is this the point of view of Polar respect to the vias? We must assume that for a multilayer board Antipad 1 is equal to 2? Note: A, B, and C. If someone has another point of view, go ahead, I'm all ears. It must be something like that but I have the feeling that still does not fit completely. With all the changes over the structure of the same via as a connector pin? Or maybe it considered that the structure does not change and therefore only estimate that parameter for a multi layer board. They are two different views of the same problem well, not exactly the same. Whereas Polar Instruments uses a field solver to calculate things by numerical solving of Maxwell's equations so it should produce more accurate results. #Polar instruments si9000 rapidshare files software#The relative dielectric constant is also different between the two.īiggest fundamental difference between them is that Saturn PCB software is not a field solver, and uses an approximated formula for impedances so results are more or less approximate. Via length is 0mm in the first one and 1. Surely both are correct, and the result does not match because they are estimating different parameters. Long time ago I contacted with Polar and Saturn, about this issue but I never received a response. JPG My English can be pretty bad, so suggestions are welcome. At least similar results should be obtained, true? Why does my ex talk to my friends but not me ![]() When I compare the result with the same utility in the sarturn PCB software I get a very different value, to the same via characteristics. Carrington Super Contributor Posts: Country. ![]() Did you miss your activation email? This topic This board Entire forum Google Bing. ![]()
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