Magnetics
Shielded Surface
Mount Coupled Inductors
MODELS HA78D-128XXXXLF
Operating Temperature Range -50°C to +155°C
Temperature Rise, Maximum 40°C
Operating Frequency Up to 3MHz
AEC-Q200 CERTIFIED
RoHS Compliant
Electrical Schematic & Derating Curve
Specifications @ 25°C
Parallel Connection
Part Number
HA78D-1284R7MLF
HA78D-1285R6MLF
HA78D-1286R8MLF
HA78D-1288R2MLF
HA78D-128100MLF
HA78D-128120MLF
HA78D-128150MLF
HA78D-128180MLF
HA78D-128220MLF
HA78D-128270MLF
HA78D-128330MLF
HA78D-128390MLF
HA78D-128470MLF
HA78D-128560MLF
HA78D-128680MLF
HA78D-128820MLF
HA78D-128101MLF
HA78D-128121KLF
HA78D-128151KLF
HA78D-128181KLF
HA78D-128221KLF
HA78D-128271KLF
HA78D-128331KLF
HA78D-128391KLF
HA78D-128471KLF
HA78D-128561KLF
HA78D-128681KLF
HA78D-128821KLF
HA78D-128102KLF
Series Connection
l
rms(4)
(A)
7.40
7.20
6.90
6.60
6.20
6.00
5.80
5.50
5.20
4.70
4.20
3.60
3.00
2.80
2.60
2.30
2.00
1.90
1.80
1.70
1.60
1.50
1.30
1.10
0.87
0.83
0.76
0.69
0.60
L
(1)
(μH)
4.7 ± 20%
5.6 ± 20%
6.8 ± 20%
8.2 ± 20%
10 ± 20%
12 ± 20%
15 ± 20%
18 ± 20%
22 ± 20%
27 ± 20%
33 ± 20%
39 ± 20%
47 ± 20%
56 ± 20%
68 ± 20%
82 ± 20%
100 ± 20%
120 ± 10%
150 ± 10%
180 ± 10%
220 ± 10%
270 ± 10%
330 ± 10%
390 ± 10%
470 ± 10%
560 ± 10%
680 ± 10%
820 ± 10%
1000 ± 10%
DCR Max
(2)
(Ω)
0.019
0.023
0.024
0.025
0.029
0.031
0.036
0.040
0.048
0.060
0.075
0.080
0.090
0.095
0.105
0.140
0.150
0.205
0.230
0.255
0.345
0.450
0.510
0.560
0.765
0.845
1.145
1.275
1.415
l
sat (3)
(A)
14.90
13.40
13.10
10.80
10.50
9.60
9.10
8.00
6.80
6.50
5.60
5.50
5.20
4.50
4.10
3.80
3.40
3.20
2.80
2.50
2.30
2.10
1.90
1.70
1.60
1.50
1.30
1.20
1.10
L
(1)
(μH)
18.8 ± 25%
22.4 ± 25%
27.2 ± 25%
32.8 ± 25%
40 ± 25%
48 ± 25%
60 ± 25%
72 ± 25%
88 ± 25%
108 ± 25%
132 ± 25%
156 ± 25%
188 ± 25%
224 ± 25%
272 ± 25%
328 ± 25%
400 ± 25%
480 ± 25%
600 ± 25%
720 ± 25%
880 ± 25%
1080 ± 25%
1320 ± 25%
1560 ± 25%
1880 ± 25%
2240 ± 25%
2720 ± 25%
4000 ± 30%
4800 ± 30%
DCR Max
(2)
(Ω)
0.076
0.092
0.096
0.100
0.116
0.124
0.144
0.158
0.190
0.240
0.300
0.320
0.360
0.380
0.420
0.560
0.600
0.820
0.920
1.02
1.38
1.80
2.04
2.24
3.06
3.38
4.58
5.10
5.66
l
sat (3)
(A)
7.70
6.60
6.40
5.60
5.40
4.80
4.30
3.90
3.50
3.40
3.10
2.80
2.60
2.40
2.10
1.90
1.70
1.60
1.40
1.30
1.10
1.00
0.92
0.84
0.80
0.73
0.63
0.58
0.56
l
rms(4)
(A)
3.60
3.50
3.40
3.30
3.20
2.90
2.70
2.50
2.20
2.00
1.70
1.60
1.50
1.40
1.30
1.20
1.10
1.00
0.89
0.84
0.75
0.71
0.62
0.53
0.43
0.40
0.36
0.33
0.30
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.
© TT Electronics plc
http://www.ttelectronics.com/magnetics/customer-service-enquiry
BI Technologies
A-1445, Jalan Tanjung Api
25050 Kuantan
Pahang Darul Makmur
Malaysia
Ph: +60 9 565 8888 Fax: +60 9 514 3555
Rev. 02
7.17
Shielded Surface
Mount Coupled Inductors
MODELS HA78D-128XXXXLF
Notes:
(1) Inductance is measured at 100 kHz, 0.1Vrms without DC current.
(2) DCR for 128 series is of Max. value.
(3) I
sat
is the saturation current at which inductance rolls off approximately 30% from its initial (zero DC) value.
(4) I
rms
is the approximate current at which ΔT = 40°C.
Outline Dimensions (mm)
Top View
Side View
Bottom View
Recommended Solder Pad Layout
Case Size
128
A
12.5
B
12.5
C
8.05
D
5.0
E
5.0
F
3.5
G
1.5
H
4.2
I
5.5
J
4.5
K
2.0
L
12.8
M
4.2
N
4.5
P
2.0
Q
4.2
R
5.5
S
4.5
Packaging
Standard:
Embossed Tape and Reel
Reel:
Diameter:
=
Case size 128
=
13” (330.2mm)
500 Units
Capacity:
Ordering Information
HA78D - 128 4R7 M LF TR
Model Series
Case Size:
128
Inductance Code:
First 2 digits are significant. Last digit denotes
the number of trailing zeros. For values below
10μH, “R” denotes the decimal point.
Tape & Reel Packing
Lead-Free
Inductance Tolerance
K = ± 10%
M = ± 20%
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.
© TT Electronics plc
http://www.ttelectronics.com/magnetics/customer-service-enquiry
BI Technologies
A-1445, Jalan Tanjung Api
25050 Kuantan
Pahang Darul Makmur
Malaysia
Ph: +60 9 565 8888 Fax: +60 9 514 3555
Rev. 02
7.17
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
TT Electronics
:
HA78D-1286R8MLFTR HA78D-1284R7MLFTR HA78D-128471KLFTR HA78D-128151KLFTR HA78D-
128330MLFTR HA78D-128150MLFTR HA78D-128121KLFTR HA78D-128560MLFTR HA78D-128181KLFTR
HA78D-128681KLFTR HA78D-128220MLFTR HA78D-128470MLFTR HA78D-1288R2MLFTR HA78D-128271KLFTR
HA78D-1285R6MLFTR HA78D-128390MLFTR HA78D-128221KLFTR HA78D-128180MLFTR HA78D-
128391KLFTR HA78D-128102KLFTR HA78D-128821KLFTR HA78D-128100MLFTR HA78D-128561KLFTR HA78D-
128270MLFTR HA78D-128331KLFTR HA78D-128120MLFTR HA78D-128101MLFTR HA78D-128680MLFTR
HA78D-128820MLFTR
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