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Introduction It’s no news that the band pass requirements for power sy s-tems on PCB’s are increasing and that power supply impe d-ance requirements are getting tighter.

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Fusing Currents in Traces - UltraCAD

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When sufficient heat is applied to a copper trace (or indeed, any material) to melt the trace, there are two times that need to be considered.

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Propagation Times and Critical Length How They …

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Propagation Times and Critical Length How They Interrelate 1 In a recent article I drew an analogy between signal reflections on electrical traces and echoes in a

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Microstrip Propagation Times Slower Than We Think

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Microstrip Propagation Times Slower Than We Think 2 Case (b) illustrates the same trace, but with a thinner spacing between the trace and plane.

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Differential Impedance - UltraCAD

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Differential impedance: Assume for a moment that we have terminated both traces in a resister to ground. Since i1 = -i2, there would be no current at all through ground. . Therefore, there is

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Current Carrying Capacity of Vias - UltraCAD

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We are frequently asked about the current carrying capacity of vias. To our knowledge, there have been no studies of this particular topic, although we do know of peo-

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Transmission Line Terminations - UltraCAD

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Transmission Line Terminations It’s The End That Counts! 2 driver. If the trace is shorted, the reflection coefficient is –1 and there will be a 100% reflection of the opposite sign back toward the driver. If the line is terminated with a resistor whose value is the same as the characteristic impedance of the trace (Zo), the reflection coefficient …

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Differential Trace Design Rules - UltraCAD Design, …

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Differential Trace Design Rules Truth vs Fiction 2 Equal length rules, part 2: The square wave in Figure 3 has been generated in MathCad using a Fourier

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