The 5943000501 is a toroidal ferrite core manufactured by Fair-Rite Products, designed for use in electromagnetic and RF applications. It features an outer diameter of 13.20±0.3 mm, an inner diameter of 11.90±0.4 mm, and a height of 21.00±0.35 mm, providing a compact form factor for space-constrained designs. The core exhibits an inductance factor (AL) of 885±20% nH at 10 kHz with magnetic field strength less than 10 gauss, and a loss tangent of =50×10?6 per µ0 at 100 kHz with field strength less than 1 gauss. With an effective cross-sectional area (Ae) of 45.6 mm² and effective volume (Ve) of 2360 mm³, this toroid is suitable for power conversion, filtering, and impedance matching applications in RF and power electronics.