ESD devices reduce insertion and return loss
Stephen Law
Circuit Protection Electronics Circuit ESD protectionNEXPERIA PESD2V8Y1BSF and PESD4V0Y1BCSF Electrostatic Discharge (ESD) protection devices are optimized for use with retimers and redrivers on high-speed data lines. PESD2V8Y1BSF protects USB4 (Thunderbolt) interfaces, while PESD4V0Y1BCSF is intended for use with both USB4 as well as HDMI 2.1. Products use firm’s proven TrEOS technology, which combines low clamping with low capacitance and high robustness. Devices provide fast Transmission Line Pulse (vfTLP) peak clamping voltages, which are even lower than USB4 protection solutions without visible trigger voltage in the standard I(V) TLP curve. This helps to compensate for the reduced inductance between protection and retimer, thereby increasing overall system-level ESD robustness. Devices provide low insertion loss (-0.29dB @ 10GHz) and return loss (-20.6dB @ 10GHz). Contrary to other solutions, the capacitance does not increase with operating voltage, offering the full RF performance up to the reverse standoff voltage.
