The EPCOS B82806D devices, available from Mouser Electronics, are a series of 60W PoE transformers with different turns ratios for output voltages of 3.3V, 5V, 12V, and 24V. Featuring an EPCOS EFD 20 ferrite core, the B82806D PoE transformers offer DC resistance values as low as 3.5 milliohms and a typical switching frequency of 250 kHz. The B82806D transformers meet UL 1446 Class 130(B) standards, are RoHS compliant, and can withstand a one-second high-voltage test between the primary and secondary sides at 1500V AC, 50 Hz.
Capable of supplying powerful loads, the high efficiency of the transformers also makes them suitable for active "clamp" topologies of forward converters.
