Providing design engineers with a compact means of protecting one to eight circuit traces against electrostatic discharge, lightning and other electrical fast transient events, TT electronics IRC has developed a series of IEC-compatible TVS diode arrays. They are supplied in 8, 14 or 16pin SOIC-N and SOT-23 surface mount packages. Available in unidirectional and bidirectional versions, the diode arrays are capable of ESD protection of less than 40kV and carry a peak pulse power rating of 500W (tP of 8/20µs). The QDN series TVS diode arrays provide protection to IEC standards for a variety of transient voltage events, including IEC 61000-4-2 - ESD protection to 15kV (air) / 8kV (contact); IEC 61000-4-4 - EFT protection to 40A at 5/50ns; and IEC 61000-4-5 - lightning/surge protection to 12A at 8/20µs for Level 2 (line-to-ground) and Level 3 (line-to-line). Specific applications for the TVS diode arrays include low-voltage ASICs, wireless communications circuits in mobile phones and portable electronics; dataport protection for RS-422, RS-432 and RS-485 lines; Ethernet 10/100 Base-T and other LAN/WAN equipment. They can also be used as communications circuits in desktop computers and other microprocessor-based systems.
