A low capacitance ESD diode keeps 3.5 pF off a high-speed line. Why 45 pF parts are wrong there, and how capacitance, clamping and IEC levels decide.
A USB ESD protection diode diverts a short electrostatic-discharge transient away from vulnerable circuitry while adding as little loading as practical to the normal signal. Selection depends on the protected pin: high-speed data, configuration, sideband and power pins have different voltage and signal-integrity requirements. A diode rating alone does not prove that the finished port … Read more
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