The 5943001101 is a toroidal ferrite core manufactured by Fair-Rite Products, featuring a ring configuration that optimizes intrinsic ferrite material properties for electromagnetic applications. This toroid has an outer diameter (A) of 12.7 mm, inner diameter (B) of 7.9 mm, and height (C) of 6.35 mm, with a total weight of 2.4 g and an inductance factor (AL) of 480 nH (±20%). The core exhibits an effective cross-sectional area (Ae) of 0.15 cm², an effective path length (le) of 3.12 cm, and an effective core volume (Vs) of 0.47 cm³, with a core constant (SI/A) of 20.8 cm?¹. The part features Parylene C coating (indicated by the 9th digit "1" in the part number), which is RoHS compliant and increases dimensions A and C while decreasing dimension B by a maximum of 0.038 mm. This toroid is ideal for power input filters, ground-fault interrupters, common-mode filters, and pulse and broadband transformers, offering reliable performance across a wide range of signal conditioning and power management applications.