In summary, Signal Transformer’s line of SPoE Series surface mount transformers target design engineers and manufacturers of Power Over Ethernet hardware requiring high frequency transformers to step down voltage within a Power Device circuit board to a specific level and supplying feedback for a controller IC. They have been optimized for High Density Boards using three Standard SMT Platforms, the EP7, EP10 and EP13.  Traditional applications for these transformers include PoE switches, extenders, splitters, VoIP phones and network routers but they are applicable for many PoE PD devices which are powered by a PoE switch, midspan or injector within the IEEE802.3 AF and AT specification.