SRU1028

T
PL
IA
N
M
CO
*R
oH
S
Features
Applications
■ Available in E6 series
■ Input/output of DC/DC converters
■ Unit height of 2.8 mm
■ Power supplies for:
•
•
•
•
■ Current up to 7 A
■ RoHS compliant*
100
Portable communication equipment
Camcorders
LCD TVs
Car radios
SRU1028 Series - Shielded SMD Power Inductors
Electrical Specifications @ 25 °C
Bourns
Part Number
Inductance
@ 100 KHz
Tol.
L (µH)
(%)
General Specifications
Q
Ref.
Test
Freq.
(MHz)
SRF
Min.
(MHz)
RDC
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A)
**KFactor
SRU1028-1R0Y
1.0
±30
14
7.96
100.0
4.9
7.00
8.00
315
SRU1028-1R5Y
1.5
±30
12
7.96
80.0
7.3
6.50
6.50
245
SRU1028-2R2Y
2.2
±30
12
7.96
65.0
11
5.30
4.80
200
SRU1028-3R3Y
3.3
±30
14
7.96
55.0
15
4.60
4.30
169
SRU1028-4R7Y
4.7
±30
12
7.96
40.0
16
4.50
3.80
147
SRU1028-6R8Y
6.8
±30
12
7.96
30.0
15
3.50
3.00
130
SRU1028-8R2Y
8.2
±30
12
7.96
28.0
28
3.30
2.70
116
SRU1028-100Y
10.0
±30
20
7.96
25.0
40
2.80
2.40
105
SRU1028-120Y
12.0
±30
22
2.52
23.0
70
2.40
2.30
93
SRU1028-150Y
SRU1028-220Y
SRU1028-330Y
SRU1028-470Y
SRU1028-560Y
SRU1028-680Y
SRU1028-820Y
SRU1028-101Y
SRU1028-121Y
SRU1028-151Y
15.0
22.0
33.0
47.0
56.0
68.0
82.0
100.0
120.0
150.0
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
26
26
24
20
22
20
20
20
18
18
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
22.0
16.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
69
104
139
167
208
232
323
365
428
518
2.00
1.60
1.25
1.30
1.10
1.00
0.90
0.85
0.65
0.70
2.00
1.40
1.20
1.10
1.00
0.90
0.85
0.80
0.70
0.65
82
71
60
49
43
39
36
33
31
27
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.
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 .................. 1000 pcs. per reel
Product Dimensions
10.0 ± 0.3
(.394 ± .012)
10.0 ± 0.3
(.394 ± .012)
**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
2.8 ± 0.3
(.110 ± .012)
10000
Core Loss (mW)
1000
3.4
(.134)
TYP.
7.4
TYP.
(.291)
100
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10
3.2
(.126)
TYP.
3.4
TYP.
(.134)
1
Recommended Layout
0.1
100
1000
10000
Flux Density Bp-p (gauss)
* 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.
1.8
(.071)
REF.
7.2
(.283)
REF.
DIMENSIONS:
1.8
(.071)
REF.
MM
(INCHES)
3.6
(.142)
REF.
SRU1028 Series
SMD Power Inductors
SRF0504
Series- -Shielded
Line Filter
Electrical Schematic
Inductor Connection
LCR METER
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031)
30.4
(1.20)
13.0 ± 0.5
(.512 ± .020)
DIA.
50.0
(1.969)
13.0 ± 0.5
DIA.
(.512 ± .020)
24
(.945)
26
(1.02)
4
(.157)
END
START
16
(.63)
NO COMPONENT
160
(6.299)
NO COMPONENT
COMPONENTS
400
(15.748)
USER DIRECTION OF FEED
QTY: 1000 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
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.