Features
n Available in E12 series
n Height of 2.9 mm
n Current rating up to 2.1 A
n RoHS compliant*
Applications
n Input/output of DC/DC converters
n Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRR0905 Series - Shielded SMD Power Inductors
*RoHS COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
*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.
Test Voltage .......................................1 V
Reow 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 5 sec.
Electrical Specications
Bourns Part No.
Inductance
100 KHz
Q
Ref.
Test
Frequency
(MHz)
SRF
Typ.
(MHz)
DCR
Max.
(Ω)
Idc
(A)
**K-
FactorµH Tol. %
SRR0905-100M 10 ± 20 39 2.52 29 0.06 2.1 77
SRR0905-120M 12 ± 20 40 2.52 26 0.07 1.9 65
SRR0905-150M 15 ± 20 35 2.52 24 0.07 1.7 57
SRR0905-180M 18 ± 20 39 2.52 21 0.08 1.6 53
SRR0905-220M 22 ± 20 35 2.52 18 0.08 1.4 48
SRR0905-270M 27 ± 20 35 2.52 17 0.10 1.3 43
SRR0905-330Y 33 ± 15 27 2.52 14 0.11 1.2 41
SRR0905-390Y 39 ± 15 31 2.52 14 0.12 1.1 36
SRR0905-470Y 47 ± 15 27 2.52 11 0.14 1.0 32
SRR0905-560Y 56 ± 15 26 2.52 11 0.19 0.93 30
SRR0905-680Y 68 ± 15 26 2.52 10 0.21 0.85 27
SRR0905-820Y 82 ± 15 26 2.52 9 0.28 0.79 26
SRR0905-101K 100 ± 10 29 0.796 8 0.34 0.72 22
SRR0905-121K 120 ± 10 31 0.796 7 0.37 0.63 21
SRR0905-151K 150 ± 10 24 0.796 6 0.51 0.55 18
SRR0905-181K 180 ± 10 24 0.796 5 0.57 0.50 16
SRR0905-221K 220 ± 10 27 0.796 5 0.78 0.47 15
SRR0905-271K 270 ± 10 30 0.796 5 0.87 0.41 13
SRR0905-331K 330 ± 10 29 0.796 4 1.20 0.37 13
SRR0905-391K 390 ± 10 26 0.796 3 1.34 0.35 11
SRR0905-471K 470 ± 10 26 0.796 3 1.50 0.33 10
General Specications
Core Material ................. Ferrite DR & RI
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Rated Current
...............Ind. drop of 10 % typ. at Isat
Temperature Rise
.......................15 °C typ. at rated Irms
Packaging .................... 800 pcs. per reel
Materials
Product Dimensions
DIMENSIONS:
MM
(INCHES)
**K-Factor: To calculate core 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.
100
10.0
(.394)
REF.
REF.
REF.
10.0
(.394)
4.5 ± 0.3
(.177 ± .012)
9.9 ± 0.3
(.390 ± .012)
2.9
(.114)
TYP.
Recommended Layout
10.0
(.394)
REF.
REF.
REF.
10.0
(.394)
4.5 ± 0.3
(.177 ± .012)
9.9 ± 0.3
(.390 ± .012)
2.8
(.110)
Core Loss vs. Flux Density
Flux Density Bp-p (gauss)
10
100
0.10
1
10 1000100
0.01
1000
Core Loss (mW)
1 MHz
800 KHz
500 KHz
400 KHz
300 KHz
200 KHz
100 KHz
