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Ultra-Low Capacitance TVS Diode Array Delivers Clamping Performance and ESD Protection

Published: Dec 09,2014

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Littelfuse, Inc., has introduced the SP3022 Series Low Capacitance ESD Protection TVS Diode Arrays (SPA Diodes). These robust 0.35pF, 20kV bidirectional (back-to-back) discrete TVS diodes can safely absorb repetitive ESD strikes over the maximum level specified in the IEC61000-4-2 international standard without performance degradation.

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The SP3022 Series’ back-to-back configuration provides symmetrical ESD protection for data lines when AC signals are present. Their ultra-low loading capacitance (just 0.35pF) makes them ideal for protecting high-speed data lines, such as all released versions of HDMI and USB, DisplayPort, V-by-One and eSATA. They’re also well suited for use in consumer electronics like set-top boxes, game consoles, smartphones, ultrabooks, notebooks, tablets and eReaders.


-Ultra-low capacitance of 0.35pF minimizes signal degradation or attenuation for high-speed data, giving engineers more signal margin in their design; ideal for protecting high-speed data lines, such as HDMI 2.0, USB 3.0, USB 3.1 and eSATA.

-Low dynamic resistance of 0.7Ω provides more than 30% lower clamping performance than similar solutions, providing better protection for sensitive chipsets.

-Extremely low leakage of <10nA at MAX VRWM preserves battery life and signal integrity because excessive leakage can be seen as additive capacitance for a high-speed differential pair.

-ESD capability of ±20kV contact discharge allows for robust product implementations in the most challenging environments; 15% improvement over some existing silicon solutions and 60% improvement over alternative technologies.

-Small footprint of 0402 (SOD-882 package) and 0201 (flipchip) saves precious board space and simplifies board layout.

-Automotive-grade quality ensures maximum reliability in the harshest environments.