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HCTR
HCT
High Current Toroidal Inductors
This information is
intended to be used in
assisting the designer in
part selection. Each
application may contain
other variables which
must be considered in
part selection, such as
temperature effects,
waveform distortion, etc.
API Delevan
Sales/Engineering is
available to provide
information as needed to
?t each application.
Data is representative of
a DC current with less
than 1% ripple and an
AC waveform less than:
50 gauss on the
For frequencies ≤ 10 kHz
HCT-37X, 25 gauss on
(mW/cm 3 )
Core loss =
Hz
1.47 x 10 –8
Gauss
f 0.971 B 2.11
the HCT-44X, 15 gauss
on the HCT-50X and 10
For frequencies ≥ 10 kHz
(mW/cm 3 ) Hz
Gauss
gauss on the
HCT-68X.The effect of
Core loss =
9.07 x 10 –10
f 1.26 B 2.11
AC or ripple ?ux can be
signi?cant in many DC
Bpk =
Erms 10 8
4.44 Anf
inductor applications.
When signi?cantly
greater AC ?ux density is
A:
T37 = 0.064 cm 2 ; T44 = 0.099 cm 2 ;
T50 = 0.112 cm 2 ; T68 = 0.179 cm 2
present, it becomes
necessary to consider its
effect on both core loss
and permeability
(inductance).
All data points, on the
above graphs, that
exceed the rated DC
current speci?ed for a
55°C rise from a 25°C
ambient are for design
reference only and are
not intended to imply
continuous use at those
DC current levels.
270 Quaker Rd., East Aurora NY 14052 ? Phone 716-652-3600 ? Fax 716-652-4814 ? E-mail: apisales@delevan.com ? www.delevan.com
1/2009
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