Features
Applications
n Unit height of 3.8 mm
n Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
n Available in E6 series
n Input/output of DC/DC converters
n Current up to 7.2 A
100
n RoHS compliant*
SRU1038 Series - Shielded SMD Power Inductors
Electrical Specifications
10.0 ± 0.3
General Specifications
2.5
(.098)
Inductance TYP.
(.394 ± .012)
Bourns
Part
No.
10.0 ± 0.3
(µH)
SRU1038-2R2Y
2.2
(.394 ± .012)
SRU1038-1R5Y
SRU1038-2R5Y
1.5
± 30 (.197 ± .020)
14
7.96
2.5
± 30
SRU1038-3R5Y
3.8 ± 0.3 3.5
(.150 ± .012)
SRU1038-3R8Y
3.8
SRU1038-5R0Y
5.0
SRU1038-6R2Y
7.46.2
TYP.
(.291)
SRU1038-5R2Y
SRU1038-6R8Y
SRU1038-8R2Y
5.2
6.8
8.2
10.0
SRU1038-150Y
T
SRU1038-100Y
SRU1038-270Y
27.0
SRU1038-220Y
SRU1038-330Y
SRU1038-470Y
SRU1038-680Y
15.0
22.0
33.0
47.0
68.0
SRU1038-101Y
100.0
SRU1038-221Y
220.0
SRU1038-151Y
SRU1038-331Y
Tol.
%
Test
Q
Freq.
Ref. (MHz)
5.0 ± 0.5
150.0
330.0
7.2
(.283)
calculate
core
REF.
± 30
±
±
12
7.96
2.5
30(.098)
14
TYP.
30
14
7.96
12
± 30
12
± 30
± 30
3.4
12
(.134)
TYP.
13
± 30
24
± 30
± 30
± 30
± 30
± 30
7.96
7.96
7.96
12
7.96
7.96
7.96
12
7.96
2.52
24
2.52
20 3.2 2.52
(.126)
22 TYP. 2.52
SRF
Typ.
(MHz)
RDC
Max.
(mW)
55.0
10.5
35.0
11.5
65.0
50.0
(.394 ± .012)
30.0
14.5
12.0
11.0
7.0
± 30
± 30
22
0.796
20
20
0.796
0.796
16.5
25.0
55.8
78.0
86.0
8.0
121.0
6.0
220.0
166.0
5.0
358.0
4.0
565.0
3.0
773.0
**KFactor
177
2.5
6.50(.098) 145
TYP.
136
5.50
106
4.60
5.50 5.0 ± 0.5
104
4.80 (.197 ± .020)
94
4.00
4.20
37.0
2.52
± 30
5.50
16.0
20.0
24
0.796
5.50
22.0
± 30
24
6.00
35.0 3.8 ± 0.3
3.90
32.0(.150 ± .012)
3.80
10.0
± 30
6.10
36.0
2.52
2.52
7.00
22.0
25.0
Isat
Typ.
(A)
7.20
10.0 ± 0.3
6.80
(.394 ± .012)
30.0
3.4
22TYP.
(.134)
22
12.5
35.0
10.0 ± 0.315.0
± 30
± 30
5.2
Irms
Max.
(A)
4.60
3.80
2.80
7.4
TYP.
2.20
(.291)
1.85
1.80
1.65
T
100 KHz
1.30
1.10
0.90
0.65
0.55
4.80
92
84
2.5
4.00(.098) 80
3.90 TYP. 73
3.60
64
2.30
1.90
3.4
43
(.134)
TYP. 39
1.60
29
2.70
1.80
51
35
1.30
26
1.10
0.80
0.65
0.52
3.2
20
Materials
Core.....................Ferrite DR and RI core
Wire.............................Enameled copper
Terminal.....................................Ag/Ni/Sn
Packaging..................... 800 pcs. per reel
Product Dimensions
(.126)
16
TYP.
10.0 ± 0.3
(.394 ± .012)
3.4 14
TYP.
(.134)
2.5
(.098)
TYP.
11
**K-Factor: To
flux density, Bp-p (gauss) = K x L(µH) x Δ I (peak-to-peak ripple current, A),
1.8
determine core loss from1.8Core Loss vs. Flux Density plot on page 2.
(.071)
REF.
Test Voltage........................................1 V
Reflow Soldering... 230 °C, 50 sec. max.
Operating Temperature
.................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
.................................-40 °C to +125 °C
Rated Current
....................Ind. drop 35 % typ. at Isat
Temperature Rise
......................40 °C max. at rated Irms
Resistance to Soldering Heat
................................ 260 °C for 10 sec.
Moisture Sensitivity Level......................1
ESD Classification (HBM)................. N/A
10.0 ± 0.3
(.394 ± .012)
5.0 ± 0.5
(.197 ± .020)
(.071)
REF.
Electrical Schematic
Recommended Layout
4.0
(.157)
REF.
1.8
(.071)
REF.
7.2
(.283)
REF.
1.8
(.071)
REF.
7.4
TYP.
(.291)
4.0
(.157)
REF.
3.4
(.134)
TYP.
T
T
Inductor Connection
LCR METER
2.5
(.098)
TYP.
3.8 ± 0.3
(.150 ± .012)
3.2
(.126)
TYP.
3.4
TYP.
(.134)
LCR METER
T
DIMENSIONS:
MM
(INCHES)
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
LCR METER
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
7.2
Specifications are subject to change without notice.
(.283)
Users should verify actual device performance in their specific applications.
REF.
1.8
1.8
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.
(.071)
(.071)
REF.
REF.
SRU1038Series
Series- -Line
Shielded
SRF0504
Filter SMD Power Inductors
SRU1038
Core Loss vs. Flux Density
10000
Core Loss (mW)
1000
100
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10
1
0.1
100
1000
10000
Flux Density Bp-p (gauss)
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
30.4
(1.20)
COVER
TAPE
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CAVITY
50.0
(1.969)
13.0 ± 0.5
DIA.
(.512 ± .020)
EMBOSSED
CARRIER
26
(1.02)
END
24.0
(.945)
4
(.157)
START
16
(.63)
NO COMPONENT
160
(6.299)
NO COMPONENT
400
(15.748)
COMPONENTS
USER DIRECTION OF FEED
QTY: 800 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
REV. 09/20
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 its
affiliates (collectively, “Bourns”).
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
without notice. Users should check for and obtain the latest relevant information and verify that such information is current and
complete before placing orders for Bourns® products.
The characteristics and parameters of a Bourns® product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns® product in a user application may vary
from the data sheet characteristics and parameters due to (i) the combination of the Bourns® product with other components
in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns®
product also can and do vary in different applications and actual performance may vary over time. Users should always verify
the actual performance of the Bourns® product in their specific devices and applications, and make their own independent
judgments regarding the amount of additional test margin to design into their device or application to compensate for
differences between laboratory and real world conditions.
Unless Bourns has explicitly designated an individual Bourns® product as meeting the requirements of a particular industry
standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any
failure of an individual Bourns® product to meet the requirements of such industry standard or particular qualification. Users of
Bourns® products are responsible for ensuring compliance with safety-related requirements and standards applicable to their
devices or applications.
Bourns® products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or
environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a
case-by-case basis, use of any Bourns® products in such unauthorized applications might not be safe and thus is at the user’s
sole risk. Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and
generally equivalent classifications outside of the United States.
Bourns expressly identifies those Bourns® standard products that are suitable for use in automotive applications on such
products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two
authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard products in an automotive
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expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment
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or any other generally equivalent governmental organization standard applicable to products designed or manufactured for
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or space applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically
approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns® standard
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user’s sole risk.
The use and level of testing applicable to Bourns® custom products shall be negotiated on a case-by-case basis by Bourns and
the user for which such Bourns® custom products are specially designed. Absent a written agreement between Bourns and the
user regarding the use and level of such testing, the above provisions applicable to Bourns® standard products shall also apply
to such Bourns® custom products.
Users shall not sell, transfer, export or re-export any Bourns® products or technology for use in activities which involve the
design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use
Bourns® products or technology in any facility which engages in activities relating to such devices. The foregoing restrictions
apply to all uses and applications that violate national or international prohibitions, including embargos or international
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exported or re-exported to countries subject to international sanctions or embargoes. Bourns® products may not, without prior
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To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential,
incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties
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bilingual versions are available at:
Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf
C1753 05/17/18R
