Description

• 125°C maximum total temperature operation

• Low profile surface mount inductor

• 10.3mm x 10.5mm x 5.0mm shielded drum core

• Ferrite core material

• Inductance range from 0.7µH to 1000µH

• Current range from 13.5 Amps to 0.43 Amps

• Frequency range up to 1MHz

Applications

• Computer, DVD players, and portable power devices

• Notebook power, LCD panels

• DC-DC converters

• Buck, boost, forward, and resonant converters

• Noise filtering and filter chokes

Environmental Data

• Storage temperature range: -40°C to +125°C

• Operating temperature range: -40°C to +125°C

(range is application specific)

• Solder reflow temperature: +260°C max. for 10 seconds

maximum

Packaging

• Supplied in tape and reel packaging, 500 per reel

DR1050 Series

Low Profile Power Inductors

Part Number

Rated

OCL (1)

Irms(2)

Isat (3)

DCR (

Ω)

DCR (

Ω)

K-factor

Inductance

µH±30%

Amperes

Amperes

m

Ω @20°C

m

Ω @20°C

(4)

(µH)

(Typical)

(Maximum)

DR1050-R80-R

0.8

0.70

9.70

13.50

3.2

4.0

20.47

DR1050-1R5-R

1.5

1.37

8.60

10.50

4.0

5.0

14.62

DR1050-2R2-R

2.2

2.27

7.52

9.25

5.6

6.8

11.37

DR1050-3R3-R

3.3

3.21

6.50

8.20

8.0

10.0

9.30

DR1050-4R7-R

4.7

4.43

6.13

6.70

9.5

11.9

7.87

DR1050-6R8-R

6.8

6.30

5.45

5.80

13.0

16.5

6.82

DR1050-8R2-R

8.2

8.09

5.24

5.00

15.1

19.0

6.02

DR1050-100-R

10

10.1

4.80

4.58

18.0

22.5

5.39

DR1050-120-R

12

11.6

3.94

4.10

24.3

30.4

4.87

DR1050-150-R

15

14.8

3.80

3.70

26.0

32.5

4.45

DR1050-180-R

18

17.5

3.39

3.30

32.8

41.0

4.09

DR1050-220-R

22

23.5

3.12

3.00

38.7

48.4

3.53

DR1050-270-R

27

26.9

2.82

2.80

42.6

53.3

3.30

DR1050-330-R

33

34.3

2.56

2.50

57.5

71.9

2.92

DR1050-390-R

39

38.3

2.35

2.35

60.7

75.9

2.77

DR1050-470-R

47

47.1

2.06

2.10

89.0

111

2.50

DR1050-560-R

56

56.7

1.96

1.94

98.0

123

2.27

DR1050-680-R

68

67.2

1.84

1.70

111

139

2.09

DR1050-820-R

82

84.4

1.60

1.58

147

184

1.86

DR1050-101-R

100

97.5

1.52

1.45

164

205

1.73

DR1050-121-R

120

118.3

1.30

1.30

223

279

1.57

DR1050-151-R

150

149.2

1.26

1.15

238

298

1.40

DR1050-181-R

180

183.7

1.18

1.08

273

341

1.26

DR1050-221-R

220

221.8

1.00

0.98

377

472

1.15

DR1050-271-R

270

263.5

0.96

0.90

410

513

1.06

DR1050-331-R

330

320.6

0.83

0.80

554

693

0.96

DR1050-391-R

390

396.5

0.76

0.72

648

810

0.86

DR1050-471-R

470

480.5

0.64

0.62

855

1069

0.78

DR1050-561-R

560

572.6

0.62

0.60

970

1213

0.72

DR1050-681-R

680

707.9

0.56

0.55

1095

1369

0.64

DR1050-821-R

820

818.7

0.54

0.50

1185

1481

0.60

DR1050-102-R

1000

1000.2

0.43

0.48

1528

1950

0.54

(1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.

(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 125°C under worst

case operating conditions verified in the end application.

(3) Isat Amperes peak for approximately 35% rolloff (@25°C)

(4) 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).

(5) Part Number Definition: DR1050-xxx-R

DR1050 = 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

RoHS

2002/95/EC