Low Clamping Bidirectional ESD Protection Diode with TrEOS technology Intended for Use with Both USB4 and HDMI 2.1

16 June 2022 - 0 Comments

Nexperia has announced two Electrostatic Discharge (ESD) protection devices that are optimized for use with retimers and redrivers on high-speed data lines and are based on TrEOS technology, which combines low clamping with low capacitance and high robustness. The new PESD2V8Y1BSF diode is designed to protect USB4 (Thunderbolt) interfaces while the PESD4V0Y1BCSF diode is intended for use with both USB4 as well as HDMI 2.1. These devices provide low very 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 that helps to compensate for the reduced inductance between protection and retimer, thereby increasing overall system-level ESD robustness.

These diodes offer greater design flexibility than other ESD protection devices because they can be placed immediately next to the connector of the device which they are protecting. This means that the AC coupling capacitance is protected as well. To maintain backward compatibility with older interface standards like USB3.2, which can be connected over USB Type-C, the PESD2V8Y1BSF diode has a reverse standoff voltage, VRWM = 2.8 V, while the PESD4V0Y1BCSF diode has a VRWM = 4 V. Apart from USB4 and HDMI 2.1, both parts can also be used to protect PCIe or DisplayPort interfaces.

Features

Bidirectional ESD protection of one line
ESD protection up to ±14 kV contact discharge according to IEC 61000-4-2
Extremely low diode capacitance: Cd = 0.16 pF at 1 MHz
Extremely low insertion loss: -0.29 dB at 10 GHz
Extremely low return loss: -20.6 dB at 10 GHz
RF performance does not degrade over the operation voltage range
Extremely low inductance protection path to ground
Very high surge robustness: 5.5 A for a 8/20 µs pulse
IEC 61000-4-4 robust up to level 3 on I/O ports (corresponds to 40 A into a 50 Ohm termination)
Ultra-small SMD package