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3

DR Series High power density,

high efficiency, shielded inductors

Technical Data 4315

Effective April 2014

1. Open Circuit Inductance Test Parameters: 100kHz, 0.25V

2. RMS current for an approximate DT of 40°C without core loss.

It is recommended that the temperature of the part not exceed 125°C.

3. Peak current for approximate 30% roll off at 20°C.

4. DCR limits @ 20°C.

5. Applied Volt-Time product (V-μS) across the inductor. This value represent the

applied V-μSat 100kHz necessary to generate a core loss equal to 10% of the

total losses for 40°C temperature rise.

6. Part number definition: DRxxx-yyy-R

- DRxxx = product code and size,

- yyy = inductance value in μH,

- R = decimal point. If no R is present, third character = # of zeros

- “-R” suffix = RoHS compliant

Part Number

Rated

Inductance

(μH)

±20%

(μH)

I

rms

2

Amps

I

sat

3

Amps

Peak

(Ω)

Typ.

Typ.

DR74-R33-R

0.33

0.294

6.26

18.4

0.0074

1.71

DR74-1R0-R

1.00

0.952

5.39

10.2

0.0099

3.08

DR74-1R5-R

1.50

1.422

4.94

8.35

0.0118

3.76

DR74-2R2-R

2.20

1.986

4.76

7.06

0.0126

4.45

DR74-3R3-R

3.30

3.396

3.94

5.40

0.0183

5.81

DR74-4R7-R

4.70

5.182

3.34

4.37

0.0254

7.18

DR74-6R8-R

6.80

7.344

2.60

3.67

0.0418

8.55

DR74-8R2-R

8.20

8.566

2.53

3.40

0.0441

9.23

DR74-100-R

10.0

9.882

2.41

3.17

0.0489

9.92

DR74-150-R

15.0

16.09

2.11

2.48

0.0637

12.7

DR74-220-R

22.0

21.73

1.75

2.13

0.0925

14.7

DR74-330-R

33.0

33.01

1.41

1.73

0.143

18.1

DR74-470-R

47.0

49.64

1.15

1.41

0.216

22.2

DR74-680-R

68.0

69.67

1.03

1.19

0.265

26.3

DR74-820-R

82.0

80.95

0.91

1.11

0.345

28.4

DR74-101-R

100

101.6

0.86

0.99

0.383

31.8

DR74-151-R

150

150.0

0.69

0.81

0.591

38.6

DR74-221-R

220

227.0

0.56

0.66

0.907

47.5

DR74-331-R

330

335.6

0.45

0.54

1.41

57.8

DR74-471-R

470

465.3

0.40

0.46

1.74

68.1

DR74-681-R

680

671.2

0.33

0.38

2.58

81.7

DR74-821-R

820

812.7

0.31

0.35

2.93

89.9

DR74-102-R

1000

1009

0.27

0.31

3.89

100

Product specifications