7.20 ± 0.3

(.283 ± .012)

1.70 ± 0.5

(.067 ± .020)

3.00 ± 0.3

(.118 ± .012)

3.40

(.134)

TYP.

4.00

(.157)

MAX.

3.70

(.146)

TYP.

7.40

(.291)

TYP.

6.50 ± 0.2

(.256 ± .008)

INDUCTANCE

CODE

MARKING

Features

Applications

• Portable communications equipment

• Laptop computers

• Camcorders, HDTV, car audio systems

• Video game consoles

SRP6540 Series - Shielded Power Inductors

Electrical Specifications

Product Dimensions

DIMENSIONS:

MM

(INCHES)

Recommended Layout

Soldering Profile

250

0

50

50

200

150

100

+4.0 °C / sec. max.

150~200 °C / 60~120 sec.

+3.0 °C / sec. max.

-(1.0~5.0) °C / sec. max.

Temperature

Rising Area

Preheat Area

Reflow Area

Forced Cooling Area

200

Time (Seconds)

100

150

60 ~ 150 sec.

60 sec. max.

217 °C

60 ~ 120 sec.

250

Electrical Schematic

General Specifications

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

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

Operating Temperature

................................-55 °C to +125 °C

(Temperature rise included)

Storage Temperature

................................-55 °C to +125 °C

Resistance to Soldering Heat

............................. +250 °C for 10 sec.

Materials

Core..................................... Iron powder

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

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

Rated Current ......... Ind. drops 20 % typ.

at Isat

Temperature Rise ................... 40 °C typ.

at rated Irms

Packaging..... 1200 pcs. per 13-inch reel

Bourns Part No.

Inductance

L (

μH) ±20 %

DCR

(m

Ω) Max.

I rms

(A)

I sat

(A)

SRP6540-R56M

0.56

4.4

18

18

SRP6540-R68M

0.68

5.0

16.5

17

SRP6540-R82M

0.82

5.5

15

15

SRP6540-1R0M

1.0

7.2

12

13.5

SRP6540-1R5M

1.5

10.0

11

11

SRP6540-2R2M

2.2

15.5

9

9

SRP6540-3R3M

3.3

23.0

6.5

7

SRP6540-4R7M

4.7

33.5

6

6.5

SRP6540-5R6M

5.6

38.0

5.5

6

SRP6540-6R8M

6.8

49.5

5

5.5

SRP6540-8R2M

8.2

50.5

4.5

5

SRP6540-100M

10

78.5

4

4

SRP6540-150M

15

121

2.9

2.9

SRP6540-220M

22

133

2.5

2.5

SRP6540-270M

27

290

2

2

SRP6540-390M

39

322

1.8

1.8

SRP6540-470M

47

366

1.6

1.6

Peak Temperature:

250 °C max.

Time Above 245 °C:

30 sec. max.

Time Above 217 °C:

60 ~ 150 sec. max.

* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

** Bourns follows the prevailing definition of “halogen free” in the industry. Bourns considers a product to be

“halogen free” if (a) the Bromine (Br ) content is 900 ppm or less; (b) the Chlorine ( Cl ) content is 900 ppm or

less; and (c) the total Bromine (Br) and Chlorine ( Cl ) content is 1500 ppm or less.

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual

device performance may vary over time.

Users should verify actual device performance in their specific applications.