1R0
12.0 ± 0.5
(.472 ± .020)
12.0 ± 0.5
(.472 ± .020)
4.9
(.193)
INDUCTANCE
CODE
7.3
(.287)
10.0
(.394)
MAX.
REF.
5.3
(.209)
REF.
REF.
REF.
REF.
7.9
(.311)
2.8
(.110)
REF.
2.8
(.110)
Features
n Available in E12 series
n Height of 10 mm
n Current rating up to 11 A
n RoHS compliant*
Applications
n Input/output of DC/DC converters
n Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRR1210 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 ................... 0.25 volt/1 KHz
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.
Rated Current
..............Ind. drop of 20 % typ. at Isat
Temperature Rise .. 40 °C typical at Irms
Electrical Characteristics
Bourns Part No.
Inductance
100 KHz
Q
Ref.
Test
Frequency
(MHz)
SRF
MHz
Typ.
DCR
max.
(mΩ)
I rms
(A)
I sat
(A)
**K-
FactoruH Tol. %
SRR1210-1R0Y 1.0 ±30 10 7.96 85 6.0 11.0 16.5 86
SRR1210-1R8Y 1.8 ±30 10 7.96 56 7.5 10.2 13.2 67
SRR1210-2R2Y 2.2 ±30 10 7.96 54 9.0 9.5 12.2 55
SRR1210-3R3Y 3.3 ±30 15 7.96 44 10 9.0 10.5 46
SRR1210-4R7Y 4.7 ±30 8 7.96 35 12 8.5 9.6 40
SRR1210-5R6Y 5.6 ±30 12 7.96 28 14 8.0 8.5 35
SRR1210-6R8Y 6.8 ±30 12 7.96 20 15 7.9 8.3 32
SRR1210-8R2Y 8.2 ±30 11 7.96 16 17 7.3 7.5 29
SRR1210-100M 10 ±20 16 2.52 12 18 6.5 6.5 26
SRR1210-120M 12 ±20 14 2.52 18 22 6.3 6.1 24
SRR1210-150M 15 ±20 16 2.52 10.5 32 5.8 5.3 21
SRR1210-180M 18 ±20 13 2.52 8.0 35 5.5 5.1 19
SRR1210-220M 22 ±20 16 2.52 8.0 38 5.2 4.5 17
SRR1210-270M 27 ±20 16 2.52 6.5 40 5.0 4.2 15
SRR1210-330M 33 ±20 16 2.52 6.5 52 4.4 3.7 14
SRR1210-390M 39 ±20 16 2.52 4.5 66 4.2 3.5 13
SRR1210-470M 47 ±20 16 2.52 4.5 72 3.8 3.1 12
SRR1210-560M 56 ±20 8 2.52 4.0 90 3.4 2.9 11
SRR1210-680M 68 ±20 12 2.52 3.8 102 3.0 2.7 10
SRR1210-820M 82 ±20 15 2.52 3.5 112 2.8 2.5 9
SRR1210-101M 100 ±20 16 0.796 3.0 135 2.5 2.2 8
SRR1210-121M 120 ±20 13 0.796 2.6 170 2.3 1.9 7
SRR1210-151M 150 ±20 12 0.796 2.2 190 2.2 1.8 7
SRR1210-181M 180 ±20 14 0.796 1.8 250 1.9 1.6 6
SRR1210-221M 220 ±20 15 0.796 1.8 315 1.7 1.5 5
SRR1210-271M 270 ±20 16 0.796 1.8 410 1.5 1.3 5
SRR1210-331M 330 ±20 14 0.796 1.8 450 1.4 1.2 4
SRR1210-391M 390 ±20 16 0.796 1.3 600 1.3 1.1 4
SRR1210-471M 470 ±20 12 0.796 0.85 820 1.2 1.0 4
SRR1210-561M 560 ±20 12 0.796 0.85 900 1.1 0.95 3
SRR1210-681M 680 ±20 11 0.796 0.85 1200 1.0 0.85 3
SRR1210-821M 820 ±20 6 0.796 0.85 1320 0.85 0.75 3
SRR1210-102M 1000 ±20 22 0.796 0.85 1650 0.75 0.70 3
General Specications
Core ................................ Ferrite DR & RI
Wire ........................... Enameled copper
Terminal coating ...................... Matte Sn
Packaging ....................250 pcs. per reel
Materials
Product Dimensions
1R0
12.0 ± 0.5
(.472 ± .020)
12.0 ± 0.5
(.472 ± .020)
4.9
(.193)
INDUCTANCE
CODE
10.0
(.394)
MAX.
REF.
5.3
(.209)
REF.
REF.
REF.
REF.
7.9
(.311)
2.8
(.110)
REF.
2.8
(.110)
Recommended LayoutSchematic
DIMENSIONS:
MM
(INCHES)
100
**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.
