Abstract

Series capacitors, under certain conditions, within high speed differential pair signals were found to have negative effects on mother board functions inside a personal computer (PC). It was noted in one case study that three conditions affected capacitors with this type of application: capacitor aging, DC offset voltage, and cold temperatures. These conditions led to the decrease in capacitance which then disabled the network connection inside the PC. It was concluded that a strategically chosen capacitor type alleviates these conditions. The capacitor type primarily depends on the dielectric material.

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