Electrical / Environmental
Surface Mount Coupled Inductors
Operating Temperature Range
-40°C to +125°C
Ambient Temperature, Maximum +85°C
Temperature Rise, Maximum 40°C
Electrical Schematic
Specifications @ 25°C
Part
Number
HM78D-12104R7MLF
HM78D-12106R8MLF
HM78D-12108R2MLF
HM78D-1210100MLF
HM78D-1210220MLF
HM78D-1210330MLF
9.50 32.80±25%
27.20±25%
18.80±25% 0.056
0.068
0.072
2.700
0.014
0.017
0.018
18.00
14.20
12.85
10.60
10.40
4.70±20%
6.80±20%
8.20±20%
10.00±20%
1.350
0.200
2.25
3.30
Irms
(A) L (µH)
(Ω)
Isat
(A)
7.10
9.005.30
Ideal for SEPIC applications, high inductance, high
efficiency and excellent current handling in rugged, low
cost part
Use as DC-DC converter and in applications like hand
phones, CD/DVD player, digital camera, GPS system.
Also used as two single inductors connected series or
parallel or as 1:1 transformer
2.000
132.00±25%
4.10
1.000
88.00±25% 0.160 2.70
Leads connected in parallel Leads connected in series
L (μH)
DCR max
(Ω)
Irated
(A)
Isat
(A)
Irms
(A)
Irated
(A)
5.20
4.75
8.60 11.75 3.200
3.100
2.250
0.080 4.3041.12±25% 1.600
1.625
1.550
5.85
1.1256.45
3.250
33.00±20%
0.050
4.50
6.60
22.00±20% 0.040 5.40 8.20
0.020
HM78D-1210XXXMLF
Parallel mode
Autotransformer
and series modes
Coupled inductor,
transformer and
SEPIC modes
HM78D-1210330MLF
HM78D-1210470MLF
HM78D-1210560MLF
HM78D-1210680MLF
HM78D-1210101MLF
HM78D-1210121MLF
HM78D-1210331MLF
HM78D-1210471MLF
Notes :
(1) Inductance is measured at 100kHz, 0.1Vrms, 0Adc.
(2) When leads connected in parallel, DCR is half the value. When lead connected in series, DCR is twice the value
(3) Isat current is the saturation current at which inductance rolls off approximately 30% from its initial (zero DC) value.
(4) Irms equals DC current, that causes component to increase by 40°C from 25°C ambient.
(5) Irated current is the rated current at which inductance rolls off approximately 10% from its initial (zero DC) value.
Mechanical Outline (mm)
Packaging
1) Tape and reel packaging.
2) 300pcs per 13" reel.
Ordering Information
1.27
1.19
0.66
3.28
2.96
2.54
2.38
1.32
1.64
1.70
1.48
224.00±25%
272.00±25%
4.90
1.05
0.425
0.400
0.350
0.315
0.205
2.45
2.20
1.85400.00±25%
480.00±25%
1320.00±25%
0.324
0.392
0.512
0.680
1.760
4.45
2.10
0.850
0.800
0.700
0.630
0.410
3.70
3.40
330.00±20%
0.081
0.098
0.128
0.170
0.440
68.00±20%
100.00±20%
56.00±20%
120.00±20%
47.00±20% 0.065 3.70 5.50 1.900 188.00±25%
0.200
2.25
3.30
0.9502.750.260 1.85
Recommended PCB Patern
2.000
132.00±25%
1.000
33.00±20%
0.050
4.50
6.60
0.90 0.150470.00±20% 0.570 1.22 1.80 0.300 1880.00±25% 2.280 0.61
HM78D
-
1210 XXX M LF TR
Model Series
Inductance Code:
Tape & Reel Packing
Lead Free
Inductance Tolerance
MAGNETIC COMPONENTS SELECTOR GUIDE 2011/2012 EDITION
We reserve the right to change specifications without prior notice.
Inductance Code:
First 2 digits are significant. Last digit denotes
the number of trailing zeros. For values below 10uH, "R"
denotes the decimal point.
Inductance Tolerance
K=±10%
M=±20%
Revision : 1 Last Updated: 5
JAN 2012