DRA Series

High Power Density,

High Efficiency, Shielded Inductors

Magnetics Solutions

For Automotive Applications

(1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc,

tolerance is ±20%

(2) Irms: DC current for an approximate

∆T 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*

∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),

∆I (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

Part Number

Rated

OCL (1)

Irms (2)

Isat (3)

Isat (4)

DCR (5)

K-factor (6)

Inductance

µH

Amperes

Amperes

Amperes

(

Ω)

+/-20%

Typ.

DRA74-R33-R

0.33

0.288

7.26

18.40

14.72

0.0054

52.6

DRA74-1R0-R

1.00

0.897

6.01

10.22

8.18

0.0078

29.2

DRA74-1R5-R

1.50

1.31

5.55

8.36

6.69

0.0092

23.9

DRA74-2R2-R

2.20

2.33

4.82

6.13

4.91

0.012

17.5

DRA74-3R3-R

3.30

3.05

4.16

5.41

4.33

0.016

15.5

DRA74-4R7-R

4.70

4.68

3.41

4.38

3.50

0.024

12.5

DRA74-6R8-R

6.80

6.51

2.91

3.68

2.94

0.034

10.5

DRA74-8R2-R

8.20

8.51

2.66

3.17

2.54

0.040

9.1

DRA74-100-R

10.0

9.62

2.56

2.97

2.37

0.043

8.5

DRA74-150-R

15.0

15.14

2.06

2.36

1.89

0.067

6.7

DRA74-220-R

22.0

22.25

1.68

1.96

1.57

0.100

5.6

DRA74-330-R

33.0

33.21

1.37

1.61

1.29

0.151

4.6

DRA74-470-R

47.0

46.56

1.14

1.37

1.099

0.219

3.9

DRA74-680-R

68.0

68.37

0.996

1.108

0.887

0.286

3.2

DRA74-820-R

82.0

81.45

0.879

1.034

0.827

0.367

3.0

DRA74-101-R

100

98.5

0.822

0.929

0.743

0.419

2.7

DRA74-151-R

150

150.9

0.661

0.748

0.598

0.648

2.1

DRA74-221-R

220

218.9

0.544

0.626

0.501

0.96

1.8

DRA74-331-R

330

328.9

0.435

0.514

0.411

1.50

1.5

DRA74-471-R

470

471.5

0.383

0.420

0.336

1.93

1.2

DRA74-681-R

680

682.8

0.315

0.352

0.282

2.86

1.0

DRA74-821-R

820

815.0

0.279

0.327

0.262

3.63

0.9

DRA74-102-R

1000

1001.7

0.260

0.292

0.234

4.19

0.8

DRA124-R47-R

0.47

0.423

15.15

30.80

24.6

0.0019

16.7

DRA124-1R0-R

1.00

0.821

11.65

22.00

17.6

0.0031

12.0

DRA124-1R5-R

1.50

1.36

9.36

17.11

13.7

0.0049

9.3

DRA124-2R2-R

2.20

2.04

7.64

14.00

11.2

0.007

7.6

DRA124-3R3-R

3.30

2.79

6.94

11.85

9.48

0.009

6.4

DRA124-4R7-R

4.70

4.74

5.47

9.06

7.25

0.014

4.9

DRA124-6R8-R

6.80

7.28

4.46

7.33

5.87

0.021

4.0

DRA124-8R2-R

8.20

8.88

3.87

6.70

5.36

0.028

3.6

DRA124-100-R

10.0

10.37

3.67

6.16

4.93

0.031

3.3

DRA124-150-R

15.0

14.10

3.10

5.31

4.25

0.044

2.9

DRA124-220-R

22.0

23.00

2.44

4.16

3.33

0.071

2.3

DRA124-330-R

33.0

34.13

1.98

3.42

2.74

0.108

1.9

DRA124-470-R

47.0

46.27

1.78

2.91

2.325

0.134

1.6

DRA124-680-R

68.0

69.77

1.454

2.369

1.895

0.201

1.3

DRA124-820-R

82.0

80.57

1.285

2.232

1.786

0.257

1.2

DRA124-101-R

100

98.8

1.199

2.000

1.600

0.296

1.1

DRA124-151-R

150

151.7

0.967

1.621

1.297

0.454

0.9

DRA124-221-R

220

209.6

0.865

1.363

1.090

0.568

0.7

DRA124-331-R

330

326.9

0.690

1.092

0.874

0.892

0.6

DRA124-471-R

470

473.0

0.568

0.911

0.729

1.32

0.5

DRA124-681-R

680

682.1

0.466

0.759

0.607

1.96

0.4

DRA124-821-R

820

826.7

0.406

0.697

0.557

2.57

0.4

DRA124-102-R

1000

1001.0

0.380

0.629

0.503

2.94

0.3

DRA125-R47-R

0.47

0.453

18.47

33.20

26.56

0.0016

16.7

DRA125-1R0-R

1.00

0.854

15.94

23.71

18.97

0.0021

12.0

DRA125-1R5-R

1.50

1.41

12.89

18.44

14.76

0.0033

9.3

DRA125-2R2-R

2.20

2.12

10.61

15.09

12.07

0.0048

7.6

DRA125-3R3-R

3.30

2.89

9.69

12.77

10.22

0.0058

6.4

DRA125-4R7-R

4.70

4.90

7.67

9.76

7.81

0.0092

4.9

DRA125-6R8-R

6.80

6.23

6.81

8.74

6.99

0.012

4.4

DRA125-8R2-R

8.20

7.49

6.41

7.90

6.32

0.013

4.0

DRA125-100-R

10.0

9.22

5.57

7.22

5.77

0.017

3.6