OM
PL
IA
N
Features
n
Available in E6 series
n
Unit height of 3.8 mm
n
Current up to 7.2 A
Applications
n
Input/output of DC/DC converters
n
Power supplies for:
*R
oH
S
C
T
100
LE
AD
F
RE
E
n
RoHS compliant*
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRU1038 Series - Shielded SMD Power Inductors
General Specifications
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
Materials
Core ....................Ferrite DR and RI core
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Packaging .................... 800 pcs. per reel
Product Dimensions
10.0 ± 0.3
(.394 ± .012)
Electrical Specifications
Test
Freq.
(MHz)
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Bourns
Part No.
Inductance
100 KHz
(µH)
SRU1038-1R5Y
SRU1038-2R2Y
SRU1038-2R5Y
SRU1038-3R5Y
SRU1038-3R8Y
SRU1038-5R0Y
SRU1038-5R2Y
SRU1038-6R2Y
SRU1038-6R8Y
SRU1038-8R2Y
SRU1038-100Y
SRU1038-150Y
SRU1038-220Y
SRU1038-270Y
SRU1038-330Y
SRU1038-470Y
SRU1038-680Y
SRU1038-101Y
SRU1038-151Y
SRU1038-221Y
SRU1038-331Y
1.5
2.2
2.5
3.5
3.8
5.0
5.2
6.2
6.8
8.2
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
Tol.
%
Q
Ref.
14
12
12
14
14
12
12
12
13
12
24
24
20
22
22
22
24
24
20
22
20
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
SRF
Typ.
(MHz)
65.0
55.0
50.0
24.0
35.0
30.0
30.0
25.0
36.0
22.0
20.0
16.0
12.0
10.0
8.0
7.0
6.0
5.0
4.0
3.0
11.0
RDC
(mW)
5.2
7.7
Irms
Max.
(A)
10.0 ± 0.3
6.80
(.394 ± .012)
7.20
6.10
5.50
5.50
4.60
4.60
4.00
3.90
3.80
3.80
2.80
1.85
1.80
1.65
1.10
1.30
0.90
0.65
0.55
7.00
6.50
6.00
5.50
4.80
4.80
4.20
4.00
3.90
3.60
2.70
2.30
1.90
1.80
1.60
1.30
1.10
0.80
0.52
Isat
Typ.
(A)
**K-
Factor
177
145
136
106
94
92
12.5
15.0
14.5
22.0
16.5
35.0
32.0
25.0
37.0
55.8
78.0
121.0
166.0
220.0
358.0
565.0
773.0
86.0
11.5
5.50
10.0 ± 0.3
104
(.394 ± .012)
3.8 ± 0.3
80
(.150 ± .012)
84
10.0
15.0
22.0
27.0
33.0
47.0
100.0
150.0
220.0
330.0
68.0
73
64
51
43
39
35
29
26
7.4
TYP.
2.20
(.291)
3.4
(.134)
TYP.
0.796
0.796
0.796
0.796
0.65
3.4 TYP.
14
(.134)
3.2
20
(.126)
16
TYP.
11
**K-Factor: To calculate core flux density, Bp-p (gauss) = K x L(µH) x
Δ
I (peak-to-peak ripple current, A),
determine core loss from
Core Loss vs. Flux Density
plot on page 2.
10.0 ± 0.3
(.394 ± .012)
Electrical Schematic
Recommended Layout
1.8
(.071)
REF.
7.2
(.283)
REF.
1.8
(.071)
REF.
3.8 ± 0.3
(.150 ± .012)
Inductor Connection
4.0
(.157)
REF.
7.4
TYP.
(.291)
3.4
(.134)
TYP.
LCR METER
3.2
(.126)
TYP.
3.4
TYP.
(.134)
LCR METER
MM
DIMENSIONS:
(INCHES)
LCR METER
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
7.2
Specifications are subject to change without notice.
(.283)
REF.
Users should verify actual device performance in their specific applications.
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.
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
®
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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
®
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C1753 10/18/17
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