Compact TVS diode arrays protect telecomms ports

AEC-Q101-qualified TVS diode arrays from Littelfuse protect sensitive telecommunications ports against electrostatic discharge (ESD) and lightning-induced surge events.

The SP4208 series TVS diode arrays (SPA diodes) integrate low capacitance steering diodes with either one avalanche breakdown diode (for uni-directional protection) or two (for bi-directional protection). They can absorb up to 30A of surge current and a minimum of ±30kV ESD without performance degradation, says Littelfuse. The low loading capacitance (3.0pF) and high surge capability make them suitable for protecting telecommunications ports such as Ethernet and other high-speed data interfaces.

Typical applications include 10/100/1000 Ethernet, T1/E1/T3/E3, USB 1.1/2.0, power ports, instrumentation, medical equipment and computers and peripherals.

The SP4208 series TVS diode arrays combine a stand-off voltage of 8.0V with a low dynamic resistance, which supports those implementations of G.Fast that run at higher voltages. The flow-through design minimises signal distortion, reduces voltage over-shoot, and allows for a simpler PCB design, adds the company.

The low parasitic capacitance (nominally 3.0pF) allows for an appropriate amount of bandwidth to enable high speed Ethernet interfaces, while the low dynamic resistance (nominally 0.4-Ohm) helps to ensure the fastest response during an ESD event.

The SP4208 series TVS diode arrays are available in SOD323 packaging in tape and reel format in quantities of 3,000. Sample requests may be placed through authorised Littelfuse distributors worldwide.

Littelfuse was established in 1927. Today it specialises in circuit protection together with power control and sensing. The company serves customers in the electronics, automotive and industrial markets with fuses, semiconductors, polymers, ceramics, relays and sensors. Littelfuse has over 10,000 employees in more than 40 locations throughout the Americas, Europe and Asia.

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