TVS Diode Arrays prevent equipment damage due to lightning, ESD.

Press Release Summary:

Integrating low-capacitance steering diodes with TVS diode, 3.3 V SP4042 Series provides sensitive electronic equipment with 2 channels of protection against damage due to lightning-induced surge events and ESD. This TVS diode array safely absorbs up to 120 A per IEC61000-4-5 (tP= 2/10 µsec) without performance degradation and ±30 kV min ESD per IEC61000-4-2. Loading capacitance is 11 pF per line, leakage current is 0.1 µA, and peak pulse power rating is 2,500 W.

Original Press Release:

SP4042 Series 3.3V TVS Diode Arrays from Littelfuse Help Prevent Equipment Damage Due to Lightning-Induced Surge Events, ESD

Two channels of protection for Ethernet interfaces, CPE, Carrier Class Equipment, and PBX systems

CHICAGO — Littelfuse, Inc., the global leader in circuit protection, has introduced the SP4042 Series TVS Diode Array, which are designed specifically to protect sensitive electronic equipment from damage due to lightning-induced surge events and electrostatic discharges (ESD). The SP4042 Series integrates low capacitance steering diodes with a TVS diode to provide two channels of protection. This robust device can safely absorb up to 120A per IEC61000-4-5 (tP= 2/10µs) without performance degradation and a minimum ±30kV ESD per IEC61000-4-2 international standard. Low loading capacitance (11pF per line) makes the SP4042 Series ideal for protecting 10/100/1000 Ethernet interfaces, Customer Premise Equipment (CPE), Carrier Class Equipment, and PBX systems.

“The SP4042 Series was developed in collaboration with some key customers, who had a variety of implementation concerns, including leakage current, which negatively affects signal integrity,” said Tim Micun, product manager/TVS Diode Arrays (SPA® Diodes). “With leakage current of just 0.1µA, the SP4042 Series offers 90 percent lower leakage current than competitive devices.”

All SP4042 Series TVS Diodes offer these key benefits:

With a peak pulse power rating of 2500W, the SP4042 Series provides excellent surge protection, ensuring the headroom needed to guard against electrical threats defined by regulatory standards.

Low capacitance of 11pF per line preserves signal integrity and minimizes data loss while offering a more robust device against electrical threats.

Enhanced ESD capability (±30kV contact, ±30kV air) permits manufacturers to provide 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.

Low leakage current of 0.1µA at 3.3V provides enhanced signal integrity, as leakage is often an indicator for the device ‘turning on.”


The SP4042 Series is packaged in a ìDFN-10 package and is 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 SP4042 Series product page and datasheet. 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 the Littelfuse website:


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