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TVS Diodes Protect PoweredUSB Interfaces From ESD

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TVS Diodes Protect PoweredUSB Interfaces From ESD

New TVS diode arrays from Littelfuse are optimized to protect DC powerlines for PoweredUSB interfaces from damaging electrostatic discharges (ESDs). Applications of the SP11xx Series include smartphones and tablets, switches / buttons, test equipment / instrumentation, point-of-sale terminals, medical equipment, notebooks / desktops / servers, computer peripherals and automotive electronics.

The TVS diodes can safely absorb repetitive ESD strikes at ±30kV without performance degradation and safely dissipate 80A of 8/20μs surge current with very low clamping voltages.

The SP11xx Series is designed to prevent premature failure or thermal issues related to fast-charging batteries, such as those used in tablets and smartphones, by limiting exposure to the fast transients associated with plugging into AC/DC converters that could introduce dirty power to the battery. They are also useful for protecting Vbus lines for USB 3.1 type C interfaces, which are increasingly common in handheld devices.

“The products employ Zener diodes to protect each I/O pin in the interface. These robust devices offer high surge tolerance, which is claimed the highest surge density per square millimeter of any TVS Diode Array that Littelfuse offers, and extremely low dynamic resistance across all of the relevant voltage levels for PoweredUSB interfaces”, according to the firm.

“The SP11xx Series combines high surge tolerance for a higher level of ESD protection and extremely low dynamic resistance for faster response,” said Tim Micun, business development manager for TVS Diode Arrays at Littelfuse. “They offer designers the flexibility to choose what is most important for their application, whether that’s size, cost, or performance.”

The SP11xx Series (surface mount 1610 package) is provided in tape & reel format in quantities of 3,000. Sample requests may be placed through authorized Littelfuse distributors worldwide.

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