Flux Density Bp-p (gauss)
1000
100
10
10 100
1 MHz
800 KHz
500 KHz
400 KHz
300 KHz
200 KHz
100 KHz
1000
1
0.1
0.01
0.001
0.0001
0.00001
Core Loss (mW)
10 0
3.3 ± 0.2
(.130 ± .008)
3.5 ± 0.2
(.138 ± .008)
1.8 ± 0.2
(.071 ± .008)
TYP.
TYP.
0.5
(.020)
TYP.
2.30
(.091)
0.5
(.020)
TYP.
1.1
(.043)
Features
■ Available in E6 series
■ Unit height of 1.8 mm
■ Current up to 1.7 A
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRU3017 Series - Shielded SMD Power Inductors
* RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations 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
specifi c applications.
Test Voltage ....................................0.1 V
Refl ow 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
.....................30 °C max. at rated Irms
Electrical Specifi cations
Bourns
Part No.
Inductance
100 KHz
Q
Ref.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
(mΩ)
Irms
Max.
(A)
Isat
Typ.
(A)
**K-
Factor(µH) Tol. %
SRU3017-2R2Y 2.2 ± 30 8 7.96 100 35 1.70 0.98 1238
SRU3017-3R3Y 3.3 ± 30 8 7.96 80 55 1.45 0.80 1002
SRU3017-4R7Y 4.7 ± 30 10 7.96 60 68 1.10 0.63 842
SRU3017-6R8Y 6.8 ± 30 10 7.96 50 85 1.00 0.53 726
SRU3017-100Y 10.0 ± 30 15 7.96 40 120 0.85 0.47 601
SRU3017-150Y 15.0 ± 30 20 2.52 35 175 0.68 0.35 489
SRU3017-220Y 22.0 ± 30 20 2.52 30 250 0.60 0.30 413
SRU3017-330Y 33.0 ± 30 20 2.52 20 430 0.47 0.25 324
SRU3017-470Y 47.0 ± 30 18 2.52 18 540 0.36 0.21 273
General Specifi cations
Core ....................Ferrite DR and RI core
Wire ............ Enameled copper (Class F)
Terminal ....................................Ag/Ni/Sn
Packaging .................... 800 pcs. per reel
Materials
Product Dimensions
Recommended Layout
*RoHS COMPLIANT
1
00
DIMENSIONS:
MM
(INCHES)
Electrical Schematic
Inductor Connection
LCR METER
4.2
(.165)
1.8
(.071)
REF.
REF.
REF.
1.3
(.051)
REF.
1.2
(.047)
**K-Factor: To calculate core fl ux 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
