A
3.3 ± 0.2
(.130 ± .008)
3.5 ± 0.2
(.138 ± .008)
1.1 ± 0.1
(.043 ± .004)
TYP.
TYP.
0.5
(.020)
TYP.
2.30
(.091)
0.5
(.020)
TYP.
1.1
(.043)
4.2
(.165)
1.8
(.071)
REF.
REF.
REF.
1.3
(.051)
REF.
1.2
(.047)
Flux Density Bp-p (gauss)
100
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 1.1 mm
■ Current up to 1.1 A
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRU3011 Series - Shielded SMD Power Inductors
Electrical Specifi cations
Product Dimensions
Recommended Layout
DIMENSIONS:
MM
(INCHES)
* 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.
Electrical Schematic
Inductor Connection
LCR METER
*RoHS COMPLIANT
**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
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.
General Specifi cations
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 .................. 1500 pcs. per reel
Materials
Bourns
Part No.
Inductance
100 KHz
Q
Ref.
Test
Freq.
(MHz)
SRF
Min.
(MHz)
RDC
(mΩ)
Irms
Max.
(A)
Isat
Typ.
(A) Marking
**K-
Factor(µH)
Tol.
%
SRU3011-1R5Y 1.5 ±30 7 7.96 180 57 1.10 1.00 A 1698
SRU3011-2R2Y 2.2 ±30 7 7.96 150 80 0.92 0.90 B 1498
SRU3011-3R3Y 3.3 ±30 8 7.96 120 116 0.84 0.78 C 1213
SRU3011-4R7Y 4.7 ±30 8 7.96 90 178 0.63 0.62 D 943
SRU3011-6R8Y 6.8 ±30 7 7.96 85 245 0.50 0.46 E 821
SRU3011-100Y 10.0 ±30 8 2.52 60 340 0.40 0.35 F 653
