Features
■ Available in E6 values
■ Current rating to 3.50 amps
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRR7045 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 ....................................0.5 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.
Electrical Specifi cations
Bourns Part No.
Inductance 1 KHz
Q
Typ.
Test
Frequency
(MHz)
SRF
Typ.
(MHz)
RDC
Max.
(Ω)
I rms
Max.
(A)
I sat
Typ.
(A)uH Tol. %
SRR7045-1R0M 1.0 ±20 10 7.96 60 0.020 3.50 3.20
SRR7045-2R2M 2.2 ±20 10 7.96 60 0.022 2.80 2.50
SRR7045-2R7M 2.7 ±20 10 7.96 60 0.027 2.78 3.10
SRR7045-3R3M 3.3 ±20 10 7.96 43 0.027 2.50 2.20
SRR7045-3R9M 3.9 ±20 10 7.96 40 0.028 2.71 2.43
SRR7045-4R7M 4.7 ±20 10 7.96 35 0.030 2.64 2.20
SRR7045-5R6M 5.6 ±20 10 7.96 33 0.036 2.38 2.00
SRR7045-6R3M 6.3 ±20 10 7.96 30 0.038 2.33 1.85
SRR7045-6R8M 6.8 ±20 10 7.96 28 0.036 2.20 2.00
SRR7045-100M 10 ±20 30 2.52 25 0.042 2.00 1.70
SRR7045-120M 12 ±20 27 2.52 23 0.050 1.85 1.40
SRR7045-150M 15 ±20 31 2.52 24 0.062 1.60 1.35
SRR7045-180M 18 ±20 29 2.52 21 0.070 1.50 1.15
SRR7045-220M 22 ±20 26 2.52 21 0.070 1.50 1.15
SRR7045-270M 27 ±20 25 2.52 18 0.110 1.25 1.00
SRR7045-330M 33 ±20 25 2.52 12 0.115 1.15 0.90
SRR7045-390M 39 ±20 26 2.52 13 0.130 1.10 0.80
SRR7045-470M 47 ±20 29 2.52 11 0.150 0.95 0.78
SRR7045-560M 56 ±20 21 2.52 11 0.200 0.85 0.65
SRR7045-680M 68 ±20 22 2.52 10 0.210 0.77 0.60
SRR7045-820M 82 ±20 22 2.52 9 0.280 0.70 0.60
SRR7045-101M 100 ±20 40 0.796 8 0.300 0.65 0.50
SRR7045-121M 120 ±20 30 0.796 7 0.420 0.60 0.45
SRR7045-151M 150 ±20 51 0.796 7 0.480 0.53 0.41
SRR7045-181M 180 ±20 52 0.796 5 0.660 0.475 0.375
SRR7045-221M 220 ±20 44 0.796 5 0.700 0.45 0.36
SRR7045-271M 270 ±20 30 0.796 5 0.840 0.40 0.275
SRR7045-331M 330 ±20 65 0.796 4 0.730 0.40 0.25
SRR7045-391M 390 ±20 27 0.796 5 1.200 0.35 0.225
SRR7045-471M 470 ±20 80 0.796 3 1.100 0.32 0.22
SRR7045-561M 560 ±20 27 0.796 4 1.600 0.30 0.20
SRR7045-681M 680 ±20 65 0.796 3 1.600 0.27 0.20
SRR7045-821M 820 ±20 26 0.796 3 2.200 0.25 0.175
SRR7045-102M 1000 ±20 90 0.252 3 2.400 0.25 0.15
General Specifi cations
Core ............................... Ferrite DR & RI
Wire ............. Enameled copper wire 130
Terminal ....................................Cu/Ni/Sn
Rated Current
...............Ind. drop of 10 % typ. at Isat
(-1R0M through -221M)
...............Ind. drop of 25 % typ. at Isat
(-271M through -102M)
Temperature Rise
.....................30 °C max. at rated Irms
Packaging .................. 1000 pcs. per reel
Materials
Product Dimensions
Recommended LayoutSchematic
DIMENSIONS:
MM
(INCHES)
470
220
2.0
(.079)
TYP.
4.50 ± 0.3
(.177 ± .012)
7.0 ± 0.3
(.276 ± .012)
7.0 ± 0.3
(.276 ± .012)
1.5
(.059)
TYP.
4.0
(.157)
TYP.
2.4
(.094)
REF.
7.80
(.307)
1.8
(.071)
REF.
1.8
(.071)
REF.
4.2
(.165)
REF.
REF.
