Magnetics Solutions
For Automotive Applications
Description
• 165°C maximum total temperature operation
• Five sizes of Automotive grade shielded drum core
inductors
• Inductance range from 0.28uH to 1000uH
• Current range up to 56 Amps
• Mechanical secure mounting for high shock and vibration
environments
• Good thermal dispersion with thermal conductive epoxy
• Customized dual winding versions available upon request
for SEPIC or Flyback configurations
Applications
• Automotive Electronics (under the hood, interior/exterior)
• Telematics
• DC-DC converters
• Buck, boost, forward, and resonant converters
• Noise filtering and filter chokes
Environmental Data
• Storage temperature range: -40°C to +165°C
• Operating temperature range: -40°C to +165°C
(range is application specific)
• Solder reflow temperature: +260°C max. for
10 seconds max.
• Complies with AEC-Q200 standard
Part Number
DRA73-R33-R
DRA73-1R0-R
DRA73-1R5-R
DRA73-2R2-R
DRA73-3R3-R
DRA73-4R7-R
DRA73-6R8-R
DRA73-8R2-R
DRA73-100-R
DRA73-150-R
DRA73-220-R
DRA73-330-R
DRA73-470-R
DRA73-680-R
DRA73-820-R
DRA73-101-R
DRA73-151-R
DRA73-221-R
DRA73-331-R
DRA73-471-R
DRA73-681-R
DRA73-821-R
DRA73-102-R
Rated
Inductance
0.33
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
OCL (1)
µH
+/-20%
0.29
0.91
1.36
2.52
3.18
4.86
6.63
8.06
10.27
14.98
22.39
31.84
47.83
66.89
83.77
101.7
151.1
218.8
326.4
472.6
682.9
825.3
991.9
Irms (2)
Amperes
8.42
6.50
5.39
4.18
3.59
2.92
2.62
2.30
2.11
1.74
1.42
1.25
1.02
0.845
0.731
0.682
0.551
0.479
0.391
0.326
0.270
0.252
0.235
DRA Series
High Power Density,
High Efficiency, Shielded Inductors
Packaging
• Supplied in tape and reel packaging, 1350 (DRA73),
1100 (DRA74), 750 (DRA124), 600 (DRA125),
and 350 (DRA127) per reel
Isat (3)
Amperes
14.80
8.22
6.73
4.93
4.35
3.52
2.96
2.74
2.39
2.00
1.64
1.35
1.10
0.937
0.851
0.763
0.632
0.510
0.423
0.354
0.297
0.267
0.239
Isat (4)
Amperes
11.84
6.58
5.38
3.95
3.48
2.82
2.37
2.19
1.91
1.60
1.32
1.08
0.884
0.749
0.680
0.610
0.506
0.408
0.338
0.283
0.238
0.214
0.192
DCR (5)
( )
Typ.
0.0040
0.0067
0.0097
0.016
0.022
0.033
0.041
0.053
0.064
0.094
0.141
0.183
0.275
0.397
0.530
0.609
0.932
1.23
1.85
2.67
3.89
4.46
5.15
K-factor (6)
60.6
33.7
27.5
20.2
17.8
14.4
12.1
11.2
9.8
8.2
6.7
5.5
4.5
3.8
3.5
3.1
2.6
2.1
1.7
1.4
1.2
1.1
1.0
(1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc,
tolerance is ±20%
(2) Irms: DC current for an approximate ³T of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 165°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 30% rolloff (@25°C)
(4) Isat Amperes peak for approximately 40% rolloff (@125°C)
(5) DCR limits @ 25°C
(6) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L*³I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
³I (Peak to peak ripple current in Amps).
(7) Part Number Definition: DRAxxx-xxx-R
DRAxxx = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
Magnetics Solutions
For Automotive Applications
Part Number
DRA74-R33-R
DRA74-1R0-R
DRA74-1R5-R
DRA74-2R2-R
DRA74-3R3-R
DRA74-4R7-R
DRA74-6R8-R
DRA74-8R2-R
DRA74-100-R
DRA74-150-R
DRA74-220-R
DRA74-330-R
DRA74-470-R
DRA74-680-R
DRA74-820-R
DRA74-101-R
DRA74-151-R
DRA74-221-R
DRA74-331-R
DRA74-471-R
DRA74-681-R
DRA74-821-R
DRA74-102-R
DRA124-1R0-R
DRA124-1R5-R
DRA124-2R2-R
DRA124-3R3-R
DRA124-4R7-R
DRA124-6R8-R
DRA124-8R2-R
DRA124-100-R
DRA124-150-R
DRA124-220-R
DRA124-330-R
DRA124-470-R
DRA124-680-R
DRA124-820-R
DRA124-101-R
DRA124-151-R
DRA124-221-R
DRA124-331-R
DRA124-471-R
DRA124-681-R
DRA124-821-R
DRA124-102-R
DRA125-1R5-R
DRA125-2R2-R
DRA125-4R7-R
DRA125-6R8-R
DRA125-8R2-R
DRA125-100-R
Rated
Inductance
0.33
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
1.00
1.50
2.20
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
1.50
2.20
4.70
6.80
8.20
10.0
OCL (1)
µH
+/-20%
0.288
0.897
1.31
2.33
3.05
4.68
6.51
8.51
9.62
15.14
22.25
33.21
46.56
68.37
81.45
98.5
150.9
218.9
328.9
471.5
682.8
815.0
1001.7
0.821
1.36
2.04
2.79
4.74
7.28
8.88
10.37
14.10
23.00
34.13
46.27
69.77
80.57
98.8
151.7
209.6
326.9
473.0
682.1
826.7
1001.0
1.41
2.12
4.90
6.23
7.49
9.22
Irms (2)
Amperes
7.26
6.01
5.55
4.82
4.16
3.41
2.91
2.66
2.56
2.06
1.68
1.37
1.14
0.996
0.879
0.822
0.661
0.544
0.435
0.383
0.315
0.279
0.260
11.65
9.36
7.64
6.94
5.47
4.46
3.87
3.67
3.10
2.44
1.98
1.78
1.454
1.285
1.199
0.967
0.865
0.690
0.568
0.466
0.406
0.380
12.89
10.61
7.67
6.81
6.41
5.57
DRA Series
High Power Density,
High Efficiency, Shielded Inductors
Isat (3)
Amperes
18.40
10.22
8.36
6.13
5.41
4.38
3.68
3.17
2.97
2.36
1.96
1.61
1.37
1.108
1.034
0.929
0.748
0.626
0.514
0.420
0.352
0.327
0.292
22.00
17.11
14.00
11.85
9.06
7.33
6.70
6.16
5.31
4.16
3.42
2.91
2.369
2.232
2.000
1.621
1.363
1.092
0.911
0.759
0.697
0.629
18.44
15.09
9.76
8.74
7.90
7.22
Isat (4)
Amperes
14.72
8.18
6.69
4.91
4.33
3.50
2.94
2.54
2.37
1.89
1.57
1.29
1.099
0.887
0.827
0.743
0.598
0.501
0.411
0.336
0.282
0.262
0.234
17.6
13.7
11.2
9.48
7.25
5.87
5.36
4.93
4.25
3.33
2.74
2.325
1.895
1.786
1.600
1.297
1.090
0.874
0.729
0.607
0.557
0.503
14.76
12.07
7.81
6.99
6.32
5.77
DCR (5)
( )
Typ.
0.0054
0.0078
0.0092
0.012
0.016
0.024
0.034
0.040
0.043
0.067
0.100
0.151
0.219
0.286
0.367
0.419
0.648
0.96
1.50
1.93
2.86
3.63
4.19
0.0031
0.0049
0.007
0.009
0.014
0.021
0.028
0.031
0.044
0.071
0.108
0.134
0.201
0.257
0.296
0.454
0.568
0.892
1.32
1.96
2.57
2.94
0.0033
0.0048
0.0092
0.012
0.013
0.017
K-factor (6)
52.6
29.2
23.9
17.5
15.5
12.5
10.5
9.1
8.5
6.7
5.6
4.6
3.9
3.2
3.0
2.7
2.1
1.8
1.5
1.2
1.0
0.9
0.8
12.0
9.3
7.6
6.4
4.9
4.0
3.6
3.3
2.9
2.3
1.9
1.6
1.3
1.2
1.1
0.9
0.7
0.6
0.5
0.4
0.4
0.3
9.3
7.6
4.9
4.4
4.0
3.6
(1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc,
tolerance is ±20%
(2) Irms: DC current for an approximate ³T of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 165°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 30% rolloff (@25°C)
(4) Isat Amperes peak for approximately 40% rolloff (@125°C)
(5) DCR limits @ 25°C
(6) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L*³I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
³I (Peak to peak ripple current in Amps).
(7) Part Number Definition: DRAxxx-xxx-R
DRAxxx = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
Magnetics Solutions
For Automotive Applications
Part Number
DRA125-150-R
DRA125-220-R
DRA125-330-R
DRA125-470-R
DRA125-680-R
DRA125-820-R
DRA125-101-R
DRA125-151-R
DRA125-221-R
DRA125-331-R
DRA125-471-R
DRA125-681-R
DRA125-821-R
DRA125-102-R
DRA127-2R2-R
DRA127-4R7-R
DRA127-8R2-R
DRA127-100-R
DRA127-150-R
DRA127-220-R
DRA127-330-R
DRA127-470-R
DRA127-680-R
DRA127-820-R
DRA127-101-R
DRA127-151-R
DRA127-221-R
DRA127-331-R
DRA127-471-R
DRA127-681-R
DRA127-821-R
DRA127-102-R
Rated
Inductance
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
2.20
4.70
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
OCL (1)
µH
+/-20%
14.67
20.65
31.47
47.83
68.48
80.86
97.6
150.0
222.8
325.1
466.3
683.3
813.6
992.8
1.92
4.58
8.33
9.63
14.90
21.47
32.01
47.91
68.22
83.91
100.8
151.2
219.8
328.3
474.5
676.6
824.6
998.7
Irms (2)
Amperes
4.45
3.95
3.19
2.59
2.125
2.005
1.745
1.409
1.142
0.998
0.826
0.673
0.632
0.552
12.52
8.14
6.33
6.02
4.83
3.98
3.22
2.62
2.333
2.008
1.888
1.524
1.253
1.011
0.827
0.736
0.637
0.598
DRA Series
High Power Density,
High Efficiency, Shielded Inductors
Isat (3)
Amperes
5.72
4.74
3.86
3.13
2.635
2.406
2.213
1.785
1.469
1.194
1.006
0.834
0.758
0.695
25.5
16.5
12.2
11.2
9.03
7.57
6.22
5.09
4.18
3.84
3.46
2.83
2.35
1.93
1.62
1.33
1.22
1.10
Isat (4)
Amperes
4.58
3.79
3.09
2.506
2.108
1.925
1.771
1.428
1.175
0.955
0.805
0.667
0.606
0.556
20.4
13.18
9.74
8.96
7.23
6.05
4.98
4.07
3.34
3.07
2.77
2.26
1.88
1.54
1.29
1.06
0.978
0.878
DCR (5)
( )
Typ.
0.027
0.035
0.053
0.081
0.120
0.135
0.178
0.273
0.416
0.543
0.79
1.20
1.36
1.78
0.0040
0.0094
0.016
0.017
0.027
0.040
0.060
0.091
0.115
0.155
0.175
0.269
0.398
0.612
0.91
1.15
1.54
1.75
K-factor (6)
2.9
2.4
1.9
1.6
1.3
1.2
1.1
0.9
0.7
0.6
0.5
0.4
0.4
0.4
6.5
4.2
3.1
2.9
2.3
1.9
1.6
1.3
1.1
1.0
0.9
0.7
0.6
0.5
0.4
0.3
0.3
0.3
(1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc,
tolerance is ±20%
(2) Irms: DC current for an approximate ³T of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 165°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 30% rolloff (@25°C)
(4) Isat Amperes peak for approximately 40% rolloff (@125°C)
(5) DCR limits @ 25°C
(6) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L*³I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
³I (Peak to peak ripple current in Amps).
(7) Part Number Definition: DRAxxx-xxx-R
DRAxxx = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
Mechanical Diagrams
DRA73 Series
BOTTOM VIEW
FRONT VIEW
7.6 Max
7.6 Max
2.00
1.5
3.55
Max
TOP VIEW
RECOMMENDED PCB LAYOU T
2.50
SCHEMATIC
1
2
8.50
2
###
wwllyy R
1
3.25
Dimensions in Millimeters.
### = Inductance value in uH. R = decimal point.
If no R is present third character = # of zeros
wwllyy = (date code) R = revision level
Magnetics Solutions
For Automotive Applications
Mechanical Diagrams
DRA74 Series
BOTTOM VIEW
FRONT VIEW
7.6 Max
DRA Series
High Power Density,
High Efficiency, Shielded Inductors
TOP VIEW
RECOMMENDED PC LA YOUT
B
2.50
SCHEMATIC
1
2
8.50
7.6 Ma
x
2.00
4.35
Max
1.5
2
###
wwllyy R
1
3.25
DRA124 Series
BOTTOM VIEW
FRONT VIEW
TOP VIEW
RECO
MMENDED PCB LAYOUT
3.85
1
5.00
12.50
Max
12.50
Max
4.5
Max
13.8
2.50
2
DRA124
###
wwllyy R
1
5.5
2
DRA125 Series
BOTTOM VIEW
FRONTVI EW
TOP VIEW
RECOMMENDED PCBLAYOUT
3.85
SCHEMATIC
5.00
12.50
Max
12.50
Max
2.50
6.0
Max
2
DRA125
###
wwllyy R
1
1
5.5
2
13.8
DRA127 Series
BOTTOM VIEW
FRONT VIEW
TOP VIEW
RECOMMENDED PCB LAYOUT
3.85
5.00
12.50
Max
12.50
Max
2.50
8.0
Max
13.8
SCHEMA
TIC
2
DRA127
###
wwllyy R
1
1
5.5
2
Dimensions in Millimeters.
### = Inductance value in uH. R = decimal point.
If no R is present third character = # of zeros
wwllyy = (date code) R = revision level
Magnetics Solutions
For Automotive Applications
Packaging Information
DRA73 Series
2.00 ±0.1
4.00
Ø1.50+0.1/-0.0
Ø1.5 Min.
0
DRA Series
High Power Density,
High Efficiency, Shielded Inductors
A
1.75±0.10
7.50±0. 16.00
1
±0.3
Bo
A0= 7.90mm
B0= 7.90 mm
K0=
3.80
mm
Ko
Ao
SEC
TION A-A
A
12.00
User direction of feed
DRA73
###
Parts packaged on 13" Diameter reel,
1,350 parts per reel.
DRA74 Series
2.00 ±0.1
4.00
Ø1.50 +0.1/-0.0
Ø1.5 Min.
0
A
1.75
±0.10
7.50±0.1 16.00
±0.3
Bo
A0= 7.90 mm
B0= 7.90 mm
K0= 4.70 mm
Ko
Ao
SECTION
A-A
A
User direction of feed
DRA74
###
12.00
Parts packaged on 13" Diameter reel,
1,100 parts per reel.
DRA124 Series
1.5 dia
+0.1/-0.0
2.0
1.5 d
ia
min
A
1.75
11.5
24.0
+/-0.3
B0
A0= 13.00 mm
B0= 13.00 mm
K0= 4.90 mm
K0
SEC
TION A-A
DRA124-###
wwllyy R
A0
16.00
User direction of feed
A
Parts packaged on 13" Diameter reel,
750 parts per reel.
DRA125 Series
1.5 dia
+0.1/-0.0
2.0
1.5 dia
min
A
1.75
11.5
24.0
+/-0.3
B0
A0= 13.00 mm
B0= 13.00 mm
K0= 6.30 mm
K0
SECTION
A-A
DRA125-###
wwllyy R
A0
16.00
User direction of feed
A
Parts packaged on 13" Diameter reel,
600 parts per reel.
DRA127 Series
1.5 dia
+0.1/-0.0
2.0
1.5 dia
min
A
1.75
11.5
24.0
+/-0.3
B0
A0= 13.00mm
B0= 13.00 mm
K0=
8.30
mm
K0
SECTION
A-A
DRA127-###
wwllyy R
A0
20.00
User direction of feed
A
Dimensions are in millimeters.
Parts packaged on 13" Diameter reel,
350 parts per reel.
Analog electronics
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