DF3A5.6CT(TPL3) from Toshiba Semiconductor and Storage is a surface-mount TVS diode designed for general-purpose circuit protection in compact electronic designs. As a dual unidirectional Zener-type device in a CST3 package, it is suited to protecting low-voltage signal lines and sensitive interfaces where board space and fast transient suppression matter. Engineers may consider this part for consumer electronics, embedded control boards, communication lines, and other SMD assemblies requiring practical overvoltage protection. Based on the provided data, the product status is Active, which supports ongoing design consideration, although the formal lifecycle status should still be verified through Toshiba documentation. RoHS compliance information is not available in the supplied specifications, so compliance should not be assumed without checking the official datasheet, manufacturer declarations, or distributor compliance records. For procurement teams, supply is indicated as sufficient, but the high reported open-market counterfeit risk suggests sourcing through authorized or traceable channels is especially important.