PL
IA
NT
Features
■
Available in E6 series
■
Unit height of 2.8 mm
■
Current up to 0.72 A
■
RoHS compliant*
Applications
■
Input/output of DC/DC converters
■
Power supplies for:
*R
oH
S
CO
M
100
•
•
•
•
Portable communication equipment
Camcorders
LCD TVs
Car radios
SRU3028 Series - Shielded SMD Power Inductors
Electrical Specifications
Bourns
Part Number
Inductance
@ 100 KHz
Tol.
L (µH)
(%)
Q
Ref.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
(mΩ)
I rms
Max.
(A)
I sat
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 (Class F)
Terminal ....................................Ag/Ni/Sn
Rated Current
...................Ind. drop 35 % typ. at Isat
Temperature Rise
.....................40 °C max. at rated Irms
Packaging .................... 600 pcs. per reel
Product Dimensions
**K-
Factor
SRU3028-100Y
SRU3028-150Y
SRU3028-220Y
SRU3028-330Y
SRU3028-470Y
SRU3028-680Y
SRU3028-101Y
10.0
15.0
22.0
33.0
47.0
68.0
100.0
±30
±30
±30
±30
±30
±30
±30
20
18
18
20
20
20
20
7.96
2.52
2.52
2.52
2.52
2.52
0.796
35
25
15
10
8
7
5
160
230
270
450
815
1400
2200
0.72
0.66
0.60
0.47
0.32
0.24
0.19
0.86
0.72
0.62
0.48
0.38
0.28
0.21
276
241
214
180
133
112
91
**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
1000
100
3.5 ± 0.2
(.138 ± .008)
Core Loss (mW)
10
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
1
100
3.3 ± 0.2
(.130 ± .008)
2.8 ± 0.2
(.110 ± .008)
0.1
0.01
100
1000
10000
Flux Density Bp-p (gauss)
Inductor Connection
Recommended Layout
REF.
4.2
(.165)
0.5
TYP.
(.020)
1.1
(.043)
TYP.
2.30
TYP.
(.091)
1.8
REF.
(.071)
LC
R
M
TYP.
0.5
(.020)
ET
ER
1.3
REF.
(.051)
1.2
(.047)
REF.
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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