Saturation at less than 5 amperes.
Therefore limited to line currents below this value
No saturation at any current.
Performance remains constant at any oper. freq.
Various losses at DC and at oper.freq. of 60, 400
No losses at DC or at any oper. freq.
Resonate at relatively low freq. in the 1-100 MHz range.
Beyond resonant freq. attenuation drops off sharply.
No resonant freq. Attenuation increases with
| Attenuation|| Increasing number of beads beyond a small number|
provides little attenuation increase. Resonant frequency
is only shifted and attenuation drops off sharply after
Attenuation is proportional to length and rises with
| Permeability|| Bead permeability is maximized. this limits their|
attenuation characteristics beyond 50 MHz. Due to high
permeability beads becoming lossy resisters and
attenuation is not enough.
Low permeability with high DC resistivity.
This is necessary for maximum smooth attenuation
from 10 MHz to 100 GHz.
| Ferrite beads are rigid, when more than one bead is |
usedthe gaps between the beads cannot effectively
prevent RF radiation. Ferrite beads will radiate high
Flexibility and pliable. Can be applied with no
gaps or spaces. Can be used as an RF shield.