M
PL
IA
N
Features
■
Available in E6 series
■
Unit height of 2.8 mm
■
Current up to 7 A
Applications
■
Input/output of DC/DC converters
■
Power supplies for:
*R
oH
S
CO
T
220
■
RoHS compliant*
•
•
•
•
Portable communication equipment
Camcorders
LCD TVs
Car radios
SRU8028 Series - Shielded SMD Power Inductors
Electrical Specifications
Inductance
100 KHz
Bourns
Part No.
(µH)
Tol.
%
Q
Ref.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
Irms
Max.
(A)
Isat
Typ.
(A)
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
Resistance to Soldering Heat
............................... 260 °C for 10 sec.
Rated Current
...................Ind. drop 35 % typ. at Isat
Temperature Rise
.....................40 °C max. at rated Irms
Materials
Core ....................Ferrite DR and RI core
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Packaging .................. 1500 pcs. per reel
Product Dimensions
8.0 ± 0.3
(.315 ± .012)
RDC
(mΩ)
**K-
Factor
SRU8028-1R0Y
SRU8028-2R5Y
SRU8028-3R3Y
SRU8028-4R7Y
SRU8028-6R8Y
SRU8028-8R2Y
SRU8028-100Y
SRU8028-120Y
SRU8028-150Y
SRU8028-220Y
SRU8028-330Y
SRU8028-470Y
SRU8028-680Y
SRU8028-101Y
1.0
2.5
3.3
4.7
6.8
8.2
10.0
12.0
15.0
22.0
33.0
47.0
68.0
100.0
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
± 30
±30
±30
±30
±30
12
15
12
15
13
17
22
21
20
22
20
14
23
35
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
66.0
65.0
60.0
50.0
40.0
37.0
35.0
30.0
25.0
20.0
15.0
12.0
9.0
8.0
10.1
13.6
17.5
20.0
34.0
54.0
45.0
76.0
66.0
106
147
177
317
390
7.00
4.50
3.60
3.70
2.80
2.60
2.60
2.20
2.00
1.60
1.30
1.20
0.85
0.75
5.50
4.20
3.50
3.20
2.50
2.30
2.20
2.00
1.70
1.50
1.10
1.00
0.80
0.70
389
251
222
198
164
143
130
121
108
88
74
62
50
41
**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
10000
1000
100
10
1
0.1
0.01
0.001
0.0001
10
100
1000
2.8
(.110)
TYP.
2.5
TYP.
(.098)
2.8 ± 0.3
(.110 ± .012)
8.0 ± 0.3
(.315 ± .012)
Core Loss (mW)
1 MHz
800 KHz
500 KHz
400 KHz
300 KHz
200 KHz
100 KHz
6.0
TYP.
(.236)
2.5
(.098)
TYP.
Flux Density Bp-p (gauss)
Electrical Schematic
Inductor Connection
Recommended Layout
5.8
(.228)
REF.
2.0
(.079)
REF.
2.0
(.079)
REF.
* 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.
LCR METER
DIMENSIONS:
MM
(INCHES)
3.2
(.126)
REF.
SRF0504 Series - -Line Filter SMD Power Inductors
SRU8028 Series Shielded
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
22.4
(.882)
13.0 ± 0.5
(.512 ± .020)
DIA.
50.0
(1.969)
13.0 ± 0.5
DIA.
(.512 ± .020)
18
(.709)
COVER
TAPE
EMBOSSED
CAVITY
21.0 ± 0.8
(.827 ± .031)
EMBOSSED
CARRIER
12.0
(.472)
END
4
(.157)
START
12
(.472)
NO COMPONENT
NO COMPONENT
COMPONENTS
160
(6.299)
400
(15.748)
USER DIRECTION OF FEED
QTY: 1500 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA:
Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. 11/13
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.
PCB Design
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