FAIR-RITE
Ferrite Core, Cylindrical, 115 ohm, 14.5 mm Length, 25 MHz to 300 MHz, 4.5 mm ID, 9.5 mm OD
FERROXCUBE
铁氧体芯,屏蔽电缆 5.1MM
WURTH ELEKTRONIK
环形铁氧体磁芯