Magnetics
Shielded Surface
Inductors
Mount Coupled
Model HA78D-L128XXXLFTR
Features and Benefits
Operating Temperature Range -50°C to +155°C
Temperature Rise, Maximum 40°C
AEC-Q200 CERTIFIED
RoHS Compliant
Specifications @ 25°C
Inductance
100kHz
0.1V
(Parallel)
@ 0Adc
µH ± 20%
10.0
Inductance
100kHz
0.1V
(Series)
@ 0Adc
µH ± 25%
40.0
Heating Current (2)
Isat (3)
Saturation
Current
Leakage (1)
Inductance
100kHz 0.1V
DC Resistance
Both
One
Part Number
Winding
Winding
Parallel
Series
µH TYP
2.75
Amps
Amps
Amps
mΩ Max
mΩ Max
2.56
1.99
1.59
1.45
3.62
2.81
2.25
2.05
10.66
7.26
6.52
4.60
HA78D-L128100MLFTR
HA78D-L128220MLFTR
HA78D-L128330MLFTR
HA78D-L128470MLFTR
29.0
48.0
75.0
90.0
116.0
192.0
300.0
360.0
22.0
33.0
47.0
88.0
132.0
188.0
5.85
10.1
14.5
Notes: (1) Leakage inductance is for L1 and is measured with L2 shorted.
(2) The Heating Current is the DC current which causes the component temperature to increase by approximately 40°C from 25°C ambient. This
current is determined by soldering the component on a typical application PCB, and then applying the current to the component for 30
minutes. Heating current in both winding is under series configuration.
(3) Isat is the saturation current at which inductance rolls off approximately 30% from its initial unbiased inductance value. It is sum of current flowing on both
winding (parallel configuration).
(4) PC Board layout, proximity of other components, trace size and airflow will affect temperature rise and must be considered when selecting an inductor.
Derating Curve
Electrical Schematic
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsmagnetics.com
Rev. 01
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