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LI
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EE
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oH
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Features
Applications
■ Shielded construction
■ DC/DC converters
■ Iron powder core
■ Power supplies for:
**
HA
■ High saturation current
■ Inductance range: 0.56 to 47 µH
■ Rated current up to 18 A
■ RoHS compliant* and halogen free**
•
•
•
•
Portable communications equipment
Laptop computers
Camcorders, HDTV
Video game consoles
SRP6540 Series - Shielded Power Inductors
Bourns Part No.
Inductance
L (μH) ±20 %
DCR
(mΩ) 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:
Time Above 245 °C:
Time Above 217 °C:
Temperature
Rising Area
Preheat Area
+4.0 °C / sec. max.
150~200 °C / 60~120 sec.
Reflow Area
250 °C max.
30 sec. max.
60 ~ 150 sec. max.
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.
Moisture Sensitivity Level ..................... 3
................. N/A
1 Circuit design, component, PCB trace
cooling provisions all affect the part
temperature. Part temperature should be
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
Product Dimensions
7.20 ± 0.3
(.283 ± .012)
Forced Cooling Area
+3.0 °C / sec. max.
3.00 ± 0.3
(.118 ± .012)
-(1.0~5.0) °C / sec. max.
6.50 ± 0.2
(.256 ± .008)
250
Temperature (°C)
217 °C
60 ~ 150 sec.
60 sec. max.
200
INDUCTANCE
CODE
MARKING
150
60 ~ 120 sec.
100
1.70 ± 0.5
(.067 ± .020)
50
0
4.00
MAX.
(.157)
Recommended Layout
50
100
150
200
250
Time (Seconds)
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**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. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on
the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf
3.40
TYP.
(.134)
3.70
(.146)
TYP.
7.40
(.291)
TYP.
DIMENSIONS:
MM
(INCHES)
SRP6540 Series - Shielded Power Inductors
L vs. I Charts
SRP6540-R68M
0.0
0.6
5.0
10.0
15.0 20.0
SRP6540-R82M
T@ 25 °C
L@ 25 °C
T@ 25 °C
0.0
0.8
25.0 30.0 35.0 40.0
50.0
40.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
50.0
0.9
40.0
0.8
0.6
0.0
0.4
T (°C)
L (μH )
30.0
0.4
L (μH )
10.0
15.0
20.0
25.0
30.0
50.0
40.0
30.0
0.5
20.0
20.0
0.3
0.2
10.0
0.0
0.0
0.0
0.0
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
2.0
4.0
6.0
0.0
8.0 10.0 12.0 14.0 16.0 18.0
T@ 25 °C
10.0
15.0
20.0
25.0
0.0
1.6
5.0
10.0
15.0
20.0
0.0
2.4
30.0
0.8
T (°C)
1.0
20.0
6.0
8.0
10.0
0.4
2.0
4.0
2.0
4.0
8.0
10.0
6.0
8.0
10.0
16.0
50.0
30.0
0.0
0.0
12.0
10.0
0.0
2.0
4.0
0.0
5.0
2.0
4.0
6.0
8.0
10.0
4.0
40.0
6.0
8.0
10.0
12.0
SRP6540-5R6M
L@ 25 °C
T@ 25 °C
12.0
0.0
6.0
14.0
50.0
3.5
3.0
30.0
50.0
1.2
SRP6540-4R7M
12.0 14.0
25.0
IDC (A)
L@ 25 °C
T@ 25 °C
6.0
20.0
40.0
IDC (A)
SRP6540-3R3M
0.0
4.0
T@ 25 °C
15.0
0.4
0.0
0.0
IDC (A)
L@ 25 °C
10.0
20.0
10.0
0.0
0.0
14.0
12.0
5.0
0.8
0.2
0.0
0.0
16.0
14.0
1.6
0.6
10.0
0.2
10.0 12.0
2.0
40.0
L (μH )
20.0
L (μH )
0.4
8.0
L@ 25 °C
25.0
50.0
1.2
T (°C)
30.0
0.6
4.0
6.0
SRP6540-2R2M
T@ 25 °C
1.4
40.0
2.0
4.0
IDC (A)
L@ 25 °C
30.0
50.0
0.8
0.0
2.0
SRP6540-1R5M
SRP6540-1R0M
L@ 25 °C
5.0
0.0
0.0
IDC (A)
IDC (A)
0.0
1.0
10.0
0.2
T (°C)
20.0
T (°C)
L (μH )
30.0
10.0
2.0
4.0
T@ 25 °C
6.0
8.0
5.0
40.0
10.0
12.0
50.0
40.0
30.0
2.0
20.0
L (μH )
20.0
1.5
3.0
T (°C)
30.0
2.0
L (μH )
2.5
T (°C)
4.0
30.0
3.0
T (°C)
L (μH )
5.0
0.6
0.2
L (μH )
T@ 25 °C
L@ 25 °C
T (°C)
SRP6540-R56M
L@ 25 °C
20.0
2.0
1.0
10.0
1.0
0.0
0.0
10.0
0.5
0.0
0.0
2.0
4.0
IDC (A)
6.0
8.0
0.0
0.0
2.0
4.0
IDC (A)
6.0
8.0
10.0
1.0
0.0
0.0
0.0
2.0
4.0
6.0
IDC (A)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
3312 - 2 mm
SMD- Shielded
TrimmingPower
Potentiometer
SRP6540
Series
Inductors
L vs. I Charts
SRP6540-6R8M
SRP6540-8R2M
L@ 25 °C
0.0
8.0
2.0
L@ 25 °C
T@ 25 °C
4.0
6.0
8.0
10.0
12.0
50.0
0.0
10.0
SRP6540-100M
L@ 25 °C
T@ 25 °C
2.0
4.0
6.0
8.0
10.0
0.0
10.0
12.0
50.0
2.0
T@ 25 °C
4.0
6.0
8.0
10.0
12.0
50.0
40.0
8.0
40.0
30.0
6.0
30.0
6.0
30.0
4.0
20.0
4.0
20.0
2.0
10.0
2.0
10.0
20.0
3.0
2.0
10.0
L (μH )
4.0
T (°C)
8.0
L (μH )
40.0
T (°C)
L (μH )
5.0
1.0
2.0
4.0
6.0
0.0
0.0
0.0
2.0
4.0
IDC (A)
6.0
8.0
10.0
12.0
0.0
22.0
50.0
4.0
6.0
8.0
10.0
0.0
30.0
12.0
50.0
20.0
6.0
10.0
20.0
10.0
1.0
2.0
3.0
4.0
5.0
0.0
10.0
0.0
1.0
2.0
4.0
8.0
12.0
50.0
40.0
30.0
18.0
15.0
20.0
10.0
2.0
3.0
4.0
0.0
5.0
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
IDC (A)
SRP6540-470M
T@ 25 °C
6.0
10.0
6.0
IDC (A)
SRP6540-390M
0.0
45.0
8.0
3.0
IDC (A)
L@ 25 °C
T@ 25 °C
6.0
9.0
4.0
0.0
4.0
12.0
2.0
0.0
L (μH )
30.0
12.0
8.0
2.0
0.0
21.0
6.0
4.0
2.0
24.0
40.0
14.0
T (°C)
L (μH )
T (°C)
30.0
8.0
5.0
27.0
16.0
10.0
4.0
SRP6540-270M
18.0
40.0
12.0
L (μH )
2.0
3.0
L@ 25 °C
T@ 25 °C
20.0
14.0
0.0
2.0
IDC (A)
L@ 25 °C
T@ 25 °C
4.0
1.0
SRP6540-220M
SRP6540-150M
2.0
0.0
0.0
0.0
IDC (A)
L@ 25 °C
0.0
16.0
6.0
T (°C)
0.0
0.0
10.0
L@ 25 °C
0.0
2.0
Electrical Schematic
T@ 25 °C
12.0
50.0
4.0
6.0
8.0
10.0
50.0
12.0
50.0
40.0
40.0
40.0
30.0
30.0
20.0
20.0
20.0
10.0
10.0
10.0
0.0
0.0
30.0
25.0
20.0
T (°C)
30.0
L (μH )
35.0
T (°C)
40.0
L (μH )
T ( C)
6.0
T (°C)
7.0
15.0
10.0
5.0
0.0
0.0
0.5
1.0
1.5
IDC (A)
2.0
2.5
3.0
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
IDC (A)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SRP6540 Series - Shielded Power Inductors
330.0
(13.00)
DIA.
21.0 ± 0.8
(.827 ± .031)
2.0 ± 0.5
(.079 ± .020)
22.4
(.882)
13.0 ± 0.5
(.512 ± .020)
DIA.
EMBOSSED
CAVITY
50.0 - 0
(1.969 - 0)
13.0 ± 0.5
DIA.
(.512 ± .020)
EMBOSSED
CARRIER
18.0 + 0
(.709 +0)
CARRIER TAPE WIDTH
12.0
(.472)
END
4.0
(.157)
NO COMPONENT
200
(7.874)
16.0
(.630)
START
NO COMPONENT
COMPONENTS
400
(15.748)
USER DIRECTION OF FEED
1200 PIECES PER REEL
DIMENSIONS:
MM
(INCHES)
REV. 03/18
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
P[ZHɉSPH[LZJVSSLJ[P]LS`¸)V\YUZ¹
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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