Littlefuse Inc., the global leader in circuit protection, has introduced a series of TVS Diode Arrays i.e. SPA® Diodes. These are optimised to protect DC powerlines for PoweredUSB interfaces from damaging electrostatic discharges (EDs).

 

SP11xx Series TVS Diode Arrays employ Zener diodes fabricated in a proprietary silicon avalanche technology to protect each I/O pin in the interface. These robust devices render high surge tolerance with the highest surge density per square millimeter of any TVS Diode Array offered by the company. 

 

Furthermore, it also provides extremely low dynamic resistance across all of the relevant voltage levels for PoweredUSB Interfaces. These devices can safely absorb repetitive ESD strikes at ±30kV without degrading the performance and safely dissipate 80A of 8/20µs surge current with very low clamping voltages.

 

 

These TVS Diode Arrays have been designed to prevent premature failure or thermal issues related to fast-charging batteries, such as those used in tablets and smartphones. This can be accomplished by limiting exposure to the fast transients associated with plugging into AC/DC converters that could introduce dirty power to the battery. Besides, these protect Vbus lines for USB 3.1 type C interfaces, which are quite popular among handheld devices.

 

As far as other applications are concerned, these include ESD protection for switches/buttons, test equipment/instrumentation, point-of-sale terminals, medical equipment, notebooks/desktops/servers, computer peripherals and automotive electronics.

• Extremely low dynamic resistance (RDYN) ensures a faster response to ESD transients for better performance.

• Discrete unidirectional design is the most appropriate solution for DC interfaces and offers the lowest dynamic resistance available.

• Flat surge performance across current profiles provides greater protection during an extreme surge or ESD events.

 

“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.

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.