Advanced dataline TVS provide ‘exceptional’ protection
New to Diodes Incorporated’s line-up is the advanced dataline transient voltage suppressor (TVS). The DESD3V3Z1BCSF-7 is designed to provide exceptional TVS/ESD protection to the high-speed input/output ports of advanced systems-on-chips (SoCs) featuring differential signal line running at 5 GHz and beyond. The DESD3V3Z1BCSF-7 suits high-speed interfaces such as USB 3.1/3.2, Thunderbolt(TM) 3, PCI Express3.0/4.0, HDMI 2.0a, and DisplayPort(TM) 1.4.
Modern SoCs are typically manufactured on advanced CMOS process nodes, which can make them more susceptible to transient voltages and electro-static discharges appearing at the input/output ports. Because of the higher than desired input channel capacitance, traditional TVS devices can degrade high-speed signals as they travel between connectors at the boundary of the adopting system and the input/output ports of SoCs.
The DESD3V3Z1BCSF-7 has been developed using Diodes’ advanced in-house processes to achieve ultra-low input channel capacitance (0.175pF typical), low dynamic resistance, low trigger/holding/clamping voltages, and is assembled in a state-of-the-art package with ultra-low capacitance.
Dr Timothy Chen, division director, Diodes Incorporate, states that the exceptionally low insertion loss means the device can meet the signal integrity requirement of high-speed interface standards such as USB 3.1/3.2 and Thunderbolt 3.
“As advanced interfaces such as USB Type-C become widely adopted, protecting the ports of advanced SoCs with multi-gigahertz bandwidth will become more imperative,” he said. “To ensure reliable operation of these SoCs and the USB Type-C ports, the need for an incredibly low profile TVS able to provide a high level of protection without impacting the integrity of the high-speed signals is paramount.”
In addition to its ultra-low input capacitance, the DESD3V3Z1BCSF-7 is said to provide exceptional ESD protection that meets IEC61000-4-2 requirements of up to 8kV air and contact. It offers a combination of clamping voltage (VCL = 4.5V typical for IPP = 3A), breakdown voltage (VBR = 9V maximum), and reverse standoff voltage (VRWM = 3.3V maximum), while peak-pulse power dissipation (PPP) is 25W over the short-circuit waveform of 8/20 microseconds.
The DESD3V3Z1BCSF-7 is supplied in the compact chip-scale X2-DSN0603-2 package, measuring 0.6mm x 0.3mm x 0.3mm.