FERRITE CORE PLANAR E 3F3; Core Type:Planar E; Core Size:E18/4/10/R; Core Material Grade:3F3; For Use With:E18/4/10/R; Effective Magnetic Path Length:20.3mm; Ae Effective Cross Scetion Area:39.5mm²; Inductance Factor Al:3.1µH ;RoHS Compliant: Yes