3.3 ± 0.2
(.130 ± .008)
3.5 ± 0.2
(.138 ± .008)
2.8 ± 0.2
(.110 ± .008)
TYP.
TYP.
0.5
(.020)
TYP.
2.30
(.091)
0.5
(.020)
TYP.
1.1
(.043)
10 0
4.2
(.165)
1.8
(.071)
REF.
REF.
REF.
1.3
(.051)
REF.
1.2
(.047)
Flux Density Bp-p (gauss)
100
1000
10
100 1000
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10000
1
0.1
0.01
Core Loss (mW)
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:
• Portable communication equipment
• Camcorders
• LCD TVs
SRU3028 Series - Shielded SMD Power Inductors
Product Dimensions
Recommended Layout
DIMENSIONS: MM
(INCHES)
Electrical Schematic
Inductor Connection
Bourns
Part Number
Inductance
@ 100 KHz Q
Ref.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A) **K-
Factor
L (μH) Tol.
(%)
SRU3028-100Y 10.0 ±30 20 7.96 35 160 0.72 0.86 276
SRU3028-150Y 15.0 ±30 18 2.52 25 230 0.66 0.72 241
SRU3028-220Y 22.0 ±30 18 2.52 15 270 0.60 0.62 214
SRU3028-330Y 33.0 ±30 20 2.52 10 450 0.47 0.48 180
SRU3028-470Y 47.0 ±30 20 2.52 8 815 0.32 0.38 133
SRU3028-680Y 68.0 ±30 20 2.52 7 1400 0.24 0.28 112
SRU3028-101Y 100.0 ±30 20 0.796 5 2200 0.19 0.21 91
1
00
LCR METER
*RoHS COMPLIANT
Δ I (peak-to-peak ripple current, A),
determine core loss from Core Loss vs. Flux Density plot.
Core Loss vs. Flux Density
Test Voltage ....................................0.1 V
.. 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.
Moisture Sensitivity Level .....................1
................. N/A
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
Materials
*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
USER DIRECTION OF FEED
160
(6.299)
NO COMPONENT NO COMPONENT
COMPONENTS 400
(15.748)
START
4
(.157)
8
(.315)
END
10 0 10 0 10 0
14
(.551)
16.5
(.650)
2.0 ± 0.5
(.079 ± .020)
50.0
(1.969)
178
(7.008)DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
EMBOSSED
CAVITY
12.0
(.472)
COVER
TAPE
SRF0504 Series - Line Filter
DIMENSIONS: MM
(INCHES)
QTY: 600 PCS. PER REEL
SRU3028 Series - Shielded SMD Power Inductors
REV. 03/18
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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