3S5 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – The new medium frequency EMI ferrite for high bias current conditions

Ferroxcube introduces 3S5, the superb material capable of
EMI suppression up to 30 MHz in DC bias applications
In order to meet the EMI regulations suppression material is a high value of
in the frequency range from 150
the complex permeability, defining it’s
kHz up to 30 MHz, FERROXCUBE required impedance, the saturation
has introduced its new 3S5 EMI
value B_sat becomes important in those
suppression material. Although several applications where bias currents are
ferrites are available for this frequency applied. It allows an EMI suppression
range, hardly any material can keep its inductor to operate on a high DC bias
absolute value of complex permeability point without the risk of saturating.
(defining the inductor’s impedance) Although a high saturation value is
when operating on a bias field (DC a typical power ferrite property,
current). With the introduction of FERROXCUBE has combined the
3S5, FERROXCUBE is filling this gap. best of both suppression and power
Applying 3S5 in an inductor gives EMI properties in the 3S5 material. The
suppression over the full frequency material characteristics and typical
range and has the major benefit of graphs are given on the next page.
sufficient permeability even when high
bias currents are applied.
In the graphs below, the impedance
plot of a number of our suppression
Best of both worlds
ferrites is given for several load
As the major property of a common conditions. They have been measured
on T14/9/5 ring cores at an ambient
temperature of 100 °C. It is clear
that 3S5 gives the highest impedance
and therefore the best suppressing
capabilities over a wide frequency
range with increasing load current.
Preferred applications
With the ever increasing demand of
interference suppression, 3S5 can be
applied in those applications where
both high operating temperatures
(140˚C) and high currents are involved
e.g. power lines in industrial, but
especially automotive environments.
Suppressing of interference signals
along these lines can be achieved
by inserting 3S5-based inductors.
Suitable core shapes are those that are
generally used for EMI suppression.
Impedance curves at 100 °C,
measured on a toroid Ø14 x Ø9 x 5 mm
with 5 turns