The USB4 ESD device provides protection with performance


The USB4 ESD device pro
Nexperia’s PESD2V8Y1BSF and PESD4V0Y1BCSF are electrostatic discharge (ESD) protection devices optimized for use with retimers and redrivers on high-speed data lines. Retimers and redrivers are often used in the design of high-speed USB4 interfaces. However, this results in shorter traces on the board with lower parasitic inductance, the unintended consequence of which is a reduction in the overall system level of ESD stability. The PESD2V8Y1BSF is designed to protect USB4 (Thunderbolt), while the PESD4V0Y1BCSF can protect USB4 and HDMI 2.1. The component uses Nexperia’s TrEOS technology, which combines low clamps with low capacitance and high stability. Both devices offer backwards compatibility
According to the company, the PESD2V8Y1BSF and PESD4V0Y1BCSF can be placed directly next to the device to be protected, allowing the devices to provide more design flexibility compared to most other ESD protection devices, plus AC line capacitance is also protected. . Most of the line inductance between the ESD protection and the protected device is located above to optimize the performance of the ESD system.
“Nexperia enables designers to meet tight insertion and return loss budgets for high-speed USB4 data lines by providing devices that minimize the impact of ESD protection on the overall system budget,” said Stefan Seider, senior product manager at Nexperia. “These devices offer the best balance between optimizing system-level ESD stability and RF performance.”

The company claims that to maintain backward compatibility with older interface standards such as USB3.2 that can be connected to USB Type-C, the PESD2V8Y1BSF has a reverse standoff voltage, VRWM = 2.8V, while the PESD4V0Y1BCSF has VRWM = 4V, which This also makes it suitable for HDMI 2.1. The RF performance of the TREOS technology used for both devices does not reduce the operating voltage range. In addition to USB4 and HDMI 2.1, both parts can also be used to protect PCIe or DisplayPort interfaces.