Features
Applications
■ Available in E6 series
■ Unit height of ꢁ.0 mm
■ Current up to ꢀ.7ꢁ A
■ RoHS compliant*
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
00
1
SRU3028 Series - Shielded SMD Power Inductors
Test Voltage....................................0.1 V
.. 230 °C, 50 sec. max.
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Inductance
@ 100 KHz
Test
Freq.
(MHz)
I rms
Max.
(A)
SRF
Typ.
(MHz)
I sat
Typ.
(A)
Q
Ref.
Bourns
Part Number
RDC
(mΩ)
**K-
Factor
Tol.
(%)
L (μH)
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
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
160
230
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
Storage Temperature
±30
±30
±30
±30
±30
±30
................................-40 °C to +125 °C
Resistance to Soldering Heat
.............................+260 °C for 10 sec.
Moisture Sensitivity Level.....................1
................. N/A
270
450
815
7
1400
2200
Materials
5
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
Δ I (peak-to-peak ripple current, A),
determine core loss from Core Loss vs. Flux Density plot.
Core Loss vs. Flux Density
1ꢀꢀꢀ
1ꢀꢀ
1ꢀ
.....................40 °C max. at rated Irms
Packaging.................... 600 pcs. per reel
Product Dimensions
3.5 ꢀ.ꢁ
(.130 .ꢀꢀ08
1 MHz
5ꢀꢀ KHz
3ꢀꢀ KHz
ꢁꢀꢀ KHz
1ꢀꢀ KHz
5ꢀ KHz
1
100
ꢀ.1
3.3 ꢀ.ꢁ
(.13ꢀ .ꢀꢀ08
ꢁ.0 ꢀ.ꢁ
ꢀ.ꢀ1
1ꢀꢀ
1ꢀꢀꢀ
1ꢀꢀꢀꢀ
(.11ꢀ .ꢀꢀ08
Flux Density Bp-p (gauss8
Inductor Connection
Recommended Layout
4.ꢁ
(.1658
REF.
1.0
(.ꢀ718
ꢀ.5
REF.
TYP.
(.ꢀꢁꢀ8
1.1
(.ꢀ438
TYP.
ꢁ.3ꢀ
(.ꢀ918
TYP.
1.3
(.ꢀ518
REF.
Electrical Schematic
ꢀ.5
(.ꢀꢁꢀ8
TYP.
1.ꢁ
(.ꢀ478
REF.
MM
(INCHES8
DIMENSIONS:
*RoHS Directive ꢁꢀꢀꢁ/95/EC Jan. ꢁ7, ꢁꢀꢀ3 including annex and RoHS Recast ꢁꢀ11/65/EU June 0, ꢁꢀ11.
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