*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

SRP1250 Series - Shielded Power Inductors

Features

■

Shielded construction

■

Unit height of 5.9 mm

■

Inductance range: 0.36 µH to 10 µH

■

Current up to 41 A

■

RoHS compliant*

Applications

■

Input/output of DC/DC converters

■

Power supplies for:

•

Portable communications equipment

•

Camcorders

•

LCD TVs

•

Car audio systems

Electrical Specifications

Product Dimensions

1R5

15.0

(0.591)

12.7 ± 0.3

(0.500 ± 0.012)

12.7 ± 0.3

(0.500 ± 0.012)

13.9

(0.547)

MAX.

MAX.

2.5 ± 0.5

(0.098 ± 0.020)

3.0 ± 0.5

(0.118 ± 0.020)

4.5

(.177)

13.5

(0.531)

MAX.

7.0

(.276)

5.2

(.205)

MAX.

5.9

(.232)

General Specifications

Test Voltage ...................................0.25 V

Test Frequency ..........................100 KHz

Reflow Soldering .....230 ˚C; 50 sec max.

Operating Temperature ..-55 °C to +150 °C

(Temperature rise included)

Storage Temperature..-55 °C to +150 °C

Resistance to Soldering Heat

..............................+260 °C for 10 sec.

Materials

Core...............................................Ferrite

Wire .............................Enameled copper

Terminal .........................................Cu/Sn

Rated Current .......Ind. drops 20 % at I sat

Temperature Rise..........40 ˚C at rated I rms

Packaging .......500 pcs. per 13-inch reel

Recommended Layout

Electrical Schematic

Inductance

I rms

I sat

DCR

Bourns Part No.

L (

µ

µH)

(A)

(A)

(m

Ω

Ω) max.

SRP1250-R36M

0.36

41

75

1.1

SRP1250-R47M

0.47

38

65

1.3

SRP1250-R50M

0.50

36

55

1.5

SRP1250-R56M

0.56

36

55

1.5

SRP1250-R68M

0.68

34

54

1.7

SRP1040-R82M

0.82

31

53

2.3

SRP1250-1R0M

1.00

29

50

2.5

SRP1250-1R2M

1.20

27

49

3.3

SRP1250-1R5M

1.50

23

48

4.1

SRP1250-1R8M

1.80

21

40

4.7

SRP1250-2R2M

2.20

20

32

5.5

SRP1250-2R7M

2.70

17

32

7.3

SRP1250-3R3M

3.30

15

32

9.2

SRP1250-4R7M

4.70

12

27

15.0

SRP1250-6R0M

6.00

9.5

14

10.0

SRP1250-6R8M

6.80

11

21

18.5

SRP1250-7R8M

7.80

10

18

20.5

SRP1250-9R0M

9.00

10

18

22.5

SRP1250-100M

10.0

9

16

25.5

Soldering Profile

25

75

125

175

225

275

0

50

100

150

200

250

300

Time (Seconds)

120 -150 seconds

60 seconds

maximum

260 °C peak

190°C

150 °C

220 °C

Ramp Down

5 °C/second

<1> 255 °C

<1> Maximum of 10 seconds

between +255 °C and +260 °C

Ramp Up

4 °C/second maximum

10 seconds minimum

DIMENSIONS:

MM

(INCHES)