60x36x20/63x38x25/68x44x15mm Ferrite Ring Iron Toroid Core Green T63 RF choke ferrite bead PC40 MnZn 1pc - AliExpress
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T300-2 MICROMETALS - Ferrite: toroidal | L: 12.7mm; Øint: 49.02mm; Øout: 77.22mm; 11.4nH | TME - Electronic components
