Features
■ Available in E12 values
■ Height of 4.5 mm maximum
■ Current rating to 9.3 amps
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
SRR1240 Series - Shielded SMD Power Inductors
*RoHS COMPLIANT
Test Voltage ....................................0.1 V
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Soldering Heat
............................... 260 °C for 10 sec.
Moisture Sensitivity Level ..................... 1
................. N/A
Bourns Part No.
Inductance
100 KHz
Q
Typ.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
Max.
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A)
**K-
Factor
(μH) Tol. %
SRR1240-1R0Y 1.0 ± 30 10 7.96 85 7.0 9.30 9.20 160
SRR1240-1R5Y 1.5 ± 30 16 7.96 80 9.5 9.20 9.00 131
SRR1240-2R4Y 2.4 ± 30 10 7.96 54 11.5 8.00 7.80 111
SRR1240-3R3Y 3.3 ± 30 14 7.96 43 15.0 6.80 6.50 96
SRR1240-3R9Y 3.9 ± 30 14 7.96 39 15.0 6.35 6.20 96
SRR1240-4R7M 4.7 ± 20 16 7.96 33 18.0 6.00 5.60 85
SRR1240-5R6M 5.6 ± 20 14 7.96 35 20.0 5.40 5.10 76
SRR1240-6R8M 6.8 ± 20 14 7.96 34 23.0 5.20 4.70 69
SRR1240-8R2M 8.2 ± 20 10 7.96 32 27.0 4.50 4.30 63
SRR1240-100M 10.0 ± 20 17 2.52 27 32.0 4.00 4.00 58
SRR1240-120M 12.0 ± 20 16 2.52 25 38.0 3.80 3.60 50
SRR1240-150M 15.0 ± 20 16 2.52 22 47.0 3.50 3.20 47
SRR1240-180M 18.0 ± 20 14 2.52 20 55.0 3.20 3.00 41
SRR1240-220M 22.0 ± 20 18 2.52 16 67.5 3.00 2.60 37
SRR1240-270M 27.0 ± 20 16 2.52 15.5 85.0 2.55 2.35 34
SRR1240-330M 33.0 ± 20 19 2.52 15 97.0 2.30 2.10 31
SRR1240-390M 39.0 ± 20 14 2.52 14 120.0 2.15 2.00 28
SRR1240-470M 47.0 ± 20 19 2.52 13 135.0 2.00 1.80 26
SRR1240-560M 56.0 ± 20 16 2.52 12 170.0 1.80 1.65 24
SRR1240-680M 68.0 ± 20 19 2.52 11 200.0 1.50 1.50 22
SRR1240-820M 82.0 ± 20 16 2.52 10 250.0 1.35 1.35 20
SRR1240-101M 100.0 ± 20 14 0.796 8 300.0 1.25 1.20 18
SRR1240-121K 120.0 ± 10 12 0.796 7.8 370.0 1.20 1.15 16
SRR1240-151K 150.0 ± 10 12 0.796 7.5 440.0 1.10 1.05 14
SRR1240-181K 180.0 ± 10 12 0.796 7.0 550.0 0.98 0.95 13
SRR1240-221K 220.0 ± 10 12 0.796 6.6 660.0 0.92 0.90 12
SRR1240-271K 270.0 ± 10 10 0.796 6.0 780.0 0.80 0.80 11
SRR1240-331K 330.0 ± 10 12 0.796 5.5 950.0 0.75 0.75 10
SRR1240-391K 390.0 ± 10 12 0.796 5.0 1150.0 0.70 0.65 9
SRR1240-471K 470.0 ± 10 12 0.796 4.5 1350.0 0.62 0.60 8
SRR1240-561K 560.0 ± 10 12 0.796 4.0 1500.0 0.55 0.52 7
SRR1240-681K 680.0 ± 10 14 0.796 3.8 2000.0 0.50 0.48 7
SRR1240-821K 820.0 ± 10 10 0.796 3.5 2400.0 0.45 0.42 6
SRR1240-102K 1000.0 ± 10 16 0.252 2.8 3000.0 0.42 0.40 6
Core ............................... Ferrite DR & RI
Wire ............. Enameled copper wire 130
Terminal ....................................Cu/Ni/Sn
Rated Current
...............Ind. drop of 25 % typ. at Isat
Temperature Rise
.....................40 °C max. at rated Irms
Packaging .................... 800 pcs. per reel
Materials
Recommended Layout
100
2.9
(.114)
REF.
2.9
(.114)
REF.
5.4
(.213)
REF.
6.8
(.268)
REF.
Electrical Schematic
Product Dimensions
DIMENSIONS: MM
(INCHES)
100
12.5 ± 0.3
(.492 ± .012)
12.5 ± 0.3
(.492 ± .012)
4.0 ± 0.5
(.157 ± .020)
5.0 ± 0.3
(.197 ± .012)
7.0
(.276) TYP.
Δ I (peak-to-peak ripple current, A),
determine core loss from Core Loss vs. Flux Density plot.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
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.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
SRR1240 Series - Shielded SMD Power Inductors
REV. 03/18
DIMENSIONS: MM
(INCHES)
QTY: 800 PCS. PER REEL
26
(1.024)
30.4
(1.197)
2.0 ± 0.5
(.079 ± .020)
50.0
(1.969)
330
(12.99)DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
USER DIRECTION OF FEED
160
(6.299)
NO COMPONENT NO COMPONENTCOMPONENTS
390
(15.354)
START
4
(.157)
16.0
(.63)
5.3
(.209)
24
(.945)
END
100 100 100
Core Loss vs. Flux Density
Flux Density Bp-p (gauss)
10
100
1000
10000
0.10
1
10 1000100
0.01
Core Loss (mW)
800 KHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10 KHz
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
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*9
