Description

• 125°C maximum total temperature operation

• Low profile surface mount inductor

• 10.3mm x 10.5mm x 4.0mm shielded drum core

• Ferrite core material

• Inductance range from 1.5µH to 330µH

• Current range from 10.0 Amps to 0.52 Amps

• Frequency range up to 1MHz

Applications

• Notebook power, Portable devices

• Wireless modems, ADSL line cards

• Point of load power supplies

• Battery chargers, Video Cards

• MP3 player, PDA’s, DVD players

• LED driver for notebook computer

• Navigation system, LCD backlighting

• Buck, Boost, or Forward inductor

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, 850 per reel

DR1040 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)

DR1040-1R5-R

1.5

1.4

6.50

10.00

6.0

8.1

15.48

DR1040-2R5-R

2.5

2.4

6.10

7.80

7.0

9.0

12.04

DR1040-3R8-R

3.8

3.6

5.50

6.40

9.6

13.0

9.85

DR1040-5R2-R

5.2

5.2

5.40

5.50

14.0

17.0

8.33

DR1040-7R0-R

7.0

6.8

4.50

4.80

17.0

20.0

7.22

DR1040-8R2-R

8.2

8.1

3.98

4.60

24.0

29.0

6.37

DR1040-100-R

10

9.6

3.80

4.40

26.0

35.0

5.70

DR1040-150-R

15

14.9

3.10

3.60

37.0

50.0

4.71

DR1040-220-R

22

21.1

2.50

2.90

54.0

73.0

4.01

DR1040-330-R

33

32.6

2.20

2.45

69.0

93.0

3.28

DR1040-470-R

47

45.8

1.90

2.10

95.0

128

2.78

DR1040-680-R

68

65.3

1.42

1.65

152

183

2.30

DR1040-820-R

82

86.8

1.29

1.47

214

260

2.04

DR1040-101-R

100

101.4

1.25

1.35

225

304

1.90

DR1040-151-R

150

148.3

0.85

1.15

356

430

1.57

DR1040-221-R

220

216.2

0.70

0.92

530

640

1.27

DR1040-331-R

330

323.4

0.52

0.70

810

1090

1.03

(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V, 0.0Adc.

(2) Irms: DC current for an approximate

∆T of 30°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: DR1040-xxx-R

DR1040 = 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