CO
M
PL
IA
NT
Features
■
Available in E6 series
■
Unit height of 1.1 mm
■
Current up to 1.1 A
Applications
■
Input/output of DC/DC converters
■
Power supplies for:
*R
oH
S
D
■
RoHS compliant*
•
•
•
•
Portable communication equipment
Camcorders
LCD TVs
Car radios
SRU3011 Series - Shielded SMD Power Inductors
Electrical Specifications
Inductance
100 KHz
Tol.
(µH)
%
Test
Freq.
(MHz)
SRF
Min.
(MHz)
Irms
Max.
(A)
Isat
Typ.
(A)
General Specifications
Test Voltage ....................................0.1 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
Resistance to Soldering Heat
............................. +260 °C for 10 sec.
Materials
Core ....................Ferrite DR and RI core
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Rated Current
...................Ind. drop 35 % typ. at Isat
Temperature Rise
.....................40 °C max. at rated Irms
Packaging .................. 1500 pcs. per reel
Product Dimensions
3.5 ± 0.2
(.138 ± .008)
Bourns
Part No.
Q
Ref.
RDC
(mΩ)
Marking
**K-
Factor
SRU3011-1R5Y
SRU3011-2R2Y
SRU3011-3R3Y
SRU3011-4R7Y
SRU3011-6R8Y
SRU3011-100Y
1.5
2.2
3.3
4.7
6.8
10.0
±30
±30
±30
±30
±30
±30
7
7
8
8
7
8
7.96
7.96
7.96
7.96
7.96
2.52
180
150
120
90
85
60
57
80
116
178
245
340
1.10
0.92
0.84
0.63
0.50
0.40
1.00
0.90
0.78
0.62
0.46
0.35
A
B
C
D
E
F
1698
1498
1213
943
821
653
**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.
Core Loss vs. Flux Density
100
10
Core Loss (mW)
1
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
0.1
A
3.3 ± 0.2
(.130 ± .008)
1.1 ± 0.1
(.043 ± .004)
0.01
100
1000
10000
Flux Density Bp-p (gauss)
Inductor Connection
Recommended Layout
REF.
4.2
(.165)
REF.
1.8
(.071)
0.5
TYP.
(.020)
1.1
(.043)
TYP.
2.30
TYP.
(.091)
LC
R
M
ET
ER
1.3
REF.
(.051)
1.2
(.047)
REF.
TYP.
0.5
(.020)
DIMENSIONS:
MM
(INCHES)
Electrical Schematic
* 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.
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.
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