7.2
(.283)
1.8
(.071)
1.8
(.071)
3.6
(.142)
REF.
REF. REF.
REF.
Features
■ Available in E6 series
■ Unit height of 3.8 mm
■ Current up to 7.2 A
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRU1038 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 .......................................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
Rated Current
...................Ind. drop 35 % typ. at Isat
Temperature Rise
.....................40 °C max. at rated Irms
Resistance to Soldering Heat
............................... 260 °C for 10 sec.
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.
%
SRU1038-1R5Y 1.5 ± 30 14 7.96 65.0 5.2 7.20 7.00 177
SRU1038-2R2Y 2.2 ± 30 12 7.96 55.0 7.7 6.80 6.50 145
SRU1038-2R5Y 2.5 ± 30 12 7.96 50.0 12.5 6.10 6.00 136
SRU1038-3R5Y 3.5 ± 30 14 7.96 24.0 11.5 5.50 5.50 106
SRU1038-3R8Y 3.8 ± 30 14 7.96 35.0 15.0 5.50 5.50 104
SRU1038-5R0Y 5.0 ± 30 12 7.96 30.0 14.5 4.60 4.80 94
SRU1038-5R2Y 5.2 ± 30 12 7.96 30.0 22.0 4.60 4.80 92
SRU1038-6R2Y 6.2 ± 30 12 7.96 25.0 16.5 4.00 4.20 84
SRU1038-6R8Y 6.8 ± 30 13 7.96 36.0 35.0 3.90 4.00 80
SRU1038-8R2Y 8.2 ± 30 12 7.96 22.0 32.0 3.80 3.90 73
SRU1038-100Y 10.0 ± 30 24 7.96 20.0 25.0 3.80 3.60 64
SRU1038-150Y 15.0 ± 30 24 2.52 16.0 37.0 2.80 2.70 51
SRU1038-220Y 22.0 ± 30 20 2.52 12.0 55.8 2.20 2.30 43
SRU1038-270Y 27.0 ± 30 22 2.52 11.0 78.0 1.85 1.90 39
SRU1038-330Y 33.0 ± 30 22 2.52 10.0 86.0 1.80 1.80 35
SRU1038-470Y 47.0 ± 30 22 2.52 8.0 121.0 1.65 1.60 29
SRU1038-680Y 68.0 ± 30 24 2.52 7.0 166.0 1.10 1.30 26
SRU1038-101Y 100.0 ± 30 24 0.796 6.0 220.0 1.30 1.10 20
SRU1038-151Y 150.0 ± 30 20 0.796 5.0 358.0 0.90 0.80 16
SRU1038-221Y 220.0 ± 30 22 0.796 4.0 565.0 0.65 0.65 14
SRU1038-331Y 330.0 ± 30 20 0.796 3.0 773.0 0.55 0.52 11
General Specifi cations
Core ....................Ferrite DR and RI core
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Packaging .................... 800 pcs. per reel
Materials
Product Dimensions
*RoHS COMPLIANT
DIMENSIONS:
MM
(INCHES)
100
7.4
(.291)
TYP.
TYP.
10.0 ± 0.3
(.394 ± .012)
3.4
(.134)
TYP.
3.2
(.126)
TYP.
3.4
(.134)
3.8 ± 0.3
(.150 ± .012)
10.0 ± 0.3
(.394 ± .012)
Recommended Layout
Inductor Connection
Electrical Schematic
**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 on page 2.
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EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
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www.bourns.com
