Littelfuse Introduces Two Series of 0.5pF, 12kV TVS Diode Arrays Designed to Prevent ESD Damage to High-Speed Interfaces

Protection for V-By-One, Embedded DisplayPort, USB 2.0/3.0 Ports, HDMI, FPDs, LCD/LED TVs, more
Littelfuse, Inc., the global leader in circuit protection, has introduced two series of TVS Diode Arrays (SPA® Diodes) designed to safeguard many of the latest high-speed interfaces from damage due to electrostatic discharges (ESD).

SP7538P Series TVS Diode Arrays integrate eight channels of ultra-low capacitance rail-to-rail diodes and an additional zener diode in a µDFN-9 package; SP0544T Series TVS Diode Arrays have a similar design but are smaller, with four channels of ultra-low capacitance rail-to-rail diodes instead of eight. Both of these robust device series can safely absorb repetitive ESD strikes above the maximum level specified in the IEC61000-4-2 international standard (±8kV contact discharge) without performance degradation. Their extremely low loading capacitance also makes them ideal for protecting high-speed signal pins.

Typical applications for both series include ESD protection for interfaces like V-By-One, Embedded DisplayPort, USB 2.0/3.0 Ports, and HDMI, as well as flat panel displays, LCD/LED TVs, smartphones and mobile computing.

“The SP7538P and SP0544T Series are appropriate for use in many of the same applications,” said Tim Micun, product manager/TVS Diode Arrays (SPA® Diodes). “The SP7538P Series is designed to permit straight-through routing for ultra-high-speed signals on DisplayPort and V-by-One interfaces, requires no fan out or fan in, and mates perfectly with the pitch on the board-to-board connectors. The SP0544T Series offers the same level of ESD performance as our earlier low capacitance TVS Diode Arrays, in a smaller outline, offering circuit designers a PCB space savings of roughly 25 percent.”

SP7538P and SP0544T Series TVS Diodes offer these key benefits:

  • Their extremely low loading capacitance of 0.5pF (typ) per I/O reduces signal degradation and distortion for high-speed applications.
  • They offer low dynamic resistance (0.4Ω), which provides low clamping performance to ensure better protection for sensitive chipsets.
  • Their enhanced ESD capability (±12kV contact, ±25kV air) permits manufacturers to achieve ESD protection beyond the maximum level stated in the IEC standard and protects against a multitude of other threats to ensure product reliability in the field.

The SP7538P Series is packaged in a μDFN-9 package; the SP0544T Series comes in a μDFN-10 package. Both are provided in tape & reel packaging in quantities of 3,000. Sample requests can be placed through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit

For More Information
Additional information is available on the SP7538P Series product page or the SP0544T Series product page. If you have technical questions, please contact: Tim Micun, product manager/TVS Diode Arrays (SPA® Diodes),

About Littelfuse
Founded in 1927, Littelfuse is the world leader in circuit protection with growing global platforms in power control and sensing. The company serves customers in the electronics, automotive and industrial markets with technologies including fuses, semiconductors, polymers, ceramics, relays and sensors. Littelfuse has over 10,000 employees in more than 40 locations throughout the Americas, Europe and Asia. For more information, please visit

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