Ultra-Compact TVS from Diodes Incorporated Provides Protection for USB 3.1/3.2 and Thunderbolt 3 Interfaces

Diodes DESD3V3Z1BCSF-7

Diodes Incorporated announced its most advanced dataline transient voltage suppressor (TVS) ever, the DESD3V3Z1BCSF-7. 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 is indispensable for high-speed interfaces like USB 3.1/3.2, Thunderbolt™ 3, PCI Express® 3.0/4.0, HDMI 2.0a, and DisplayPort™ 1.4.

Diodes - DESD3V3Z1BCSF-7

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. Due to 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 (0.175 pF typical), low dynamic resistance, low trigger/holding/clamping voltages, and is assembled in a state-of-the-art package with ultra-low capacitance. Meticulous design results in exceptionally low insertion loss, meeting the signal integrity requirement of highspeed interface standards like USB 3.1/3.2 and Thunderbolt 3.

In addition to its ultra-low input capacitance, the DESD3V3Z1BCSF-7 offers exceptional ESD protection that meets IEC61000-4-2 requirements of up to ±8 kV air and contact. It leads the industry by offering the best combination of clamping voltage (VCL = 4.5 V typical for IPP = 3 A), breakdown voltage (VBR = 9 V maximum), and reverse standoff voltage (VRWM = 3.3 V maximum), while peak-pulse power dissipation (PPP) is 25 W over the short-circuit waveform of 8/20 μs.

The DESD3V3Z1BCSF-7 is supplied in the ultra-compact chip-scale X2-DSN0603-2 package, measuring just 0.6 mm × 0.3 mm and only 0.3 mm high, and is priced at $0.056 each for a 10k reeled quantity.

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