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.

DRA125-150-R

15.0

14.67

4.45

5.72

4.58

0.027

2.9

DRA125-220-R

22.0

20.65

3.95

4.74

3.79

0.035

2.4

DRA125-330-R

33.0

31.47

3.19

3.86

3.09

0.053

1.9

DRA125-470-R

47.0

47.83

2.59

3.13

2.506

0.081

1.6

DRA125-680-R

68.0

68.48

2.125

2.635

2.108

0.120

1.3

DRA125-820-R

82.0

80.86

2.005

2.406

1.925

0.135

1.2

DRA125-101-R

100

97.6

1.745

2.213

1.771

0.178

1.1

DRA125-151-R

150

150.0

1.409

1.785

1.428

0.273

0.9

DRA125-221-R

220

222.8

1.142

1.469

1.175

0.416

0.7

DRA125-331-R

330

325.1

0.998

1.194

0.955

0.543

0.6

DRA125-471-R

470

466.3

0.826

1.006

0.805

0.79

0.5

DRA125-681-R

680

683.3

0.673

0.834

0.667

1.20

0.4

DRA125-821-R

820

813.6

0.632

0.758

0.606

1.36

0.4

DRA125-102-R

1000

992.8

0.552

0.695

0.556

1.78

0.4

DRA127-R47-R

0.47

0.413

22.50

56.0

44.8

0.0012

14.3

DRA127-1R0-R

1.00

0.772

19.22

40.0

32.0

0.0017

10.2

DRA127-1R5-R

1.50

1.27

15.32

31.1

24.9

0.0027

7.9

DRA127-2R2-R

2.20

1.92

12.52

25.5

20.4

0.0040

6.5

DRA127-3R3-R

3.30

3.51

9.59

18.7

14.93

0.0068

4.8

DRA127-4R7-R

4.70

4.58

8.14

16.5

13.18

0.0094

4.2

DRA127-6R8-R

6.80

6.72

7.32

13.3

10.67

0.012

3.4

DRA127-8R2-R

8.20

8.33

6.33

12.2

9.74

0.016

3.1

DRA127-100-R

10.0

9.63

6.02

11.2

8.96

0.017

2.9

DRA127-150-R

15.0

14.90

4.83

9.03

7.23

0.027

2.3

DRA127-220-R

22.0

21.47

3.98

7.57

6.05

0.040

1.9

DRA127-330-R

33.0

32.01

3.22

6.22

4.98

0.060

1.6

DRA127-470-R

47.0

47.91

2.62

5.09

4.07

0.091

1.3

DRA127-680-R

68.0

68.22

2.333

4.18

3.34

0.115

1.1

DRA127-820-R

82.0

83.91

2.008

3.84

3.07

0.155

1.0

DRA127-101-R

100

100.8

1.888

3.46

2.77

0.175

0.9

DRA127-151-R

150

151.2

1.524

2.83

2.26

0.269

0.7

DRA127-221-R

220

219.8

1.253

2.35

1.88

0.398

0.6

DRA127-331-R

330

328.3

1.011

1.93

1.54

0.612

0.5

DRA127-471-R

470

474.5

0.827

1.62

1.29

0.91

0.4

DRA127-681-R

680

676.6

0.736

1.33

1.06

1.15

0.3

DRA127-821-R

820

824.6

0.637

1.22

0.978

1.54

0.3

DRA127-102-R

1000

998.7

0.598

1.10

0.878

1.75

0.3

Mechanical Diagrams

DRA73 Series

TOP VIEW

BOTTOM VIEW

7.6 Max

7.6 Max

FRONT VIEW

3.55

Max

###

wwllyy R

8.50

SCHEMATIC

2

1

RECOMMENDED PCB LAYOU T

2.50

2.00

3.25

1

2

1.5

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