6.50 ± 0.30
(.256 ± .012)
6.20 ± 0.30
(.244 ± .012)
1.80 ± 0.20
(.071 ± .008)
4.90
(.193)
TYP.
100
TYP.
2.15
(.085)
TYP.
2.20
(.087)
TYP.
REF.
REF.
REF.
REF.
REF.
2.15
(.085)
4.90
(.193)
2.40
(.094)
REF.
2.40
(.094)
1.10
(.043)
1.10
(.043)
REF.
1.10
(.043)
REF.
1.10
(.043)
4.90
(.193)
Features
■ Maximum height of 2.0 mm
■ Current up to 3.6 A
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SRU6018 Series - Shielded SMD Power Inductors
Test Voltage ....................................0.1 V
Refl ow Soldering .. 230 °C, 50 sec. max.
Operating Temp. .........-40 °C to +125 °C
(Temperature rise included)
Storage Temp. ............-40 °C to +125 °C
Resistance to Soldering Heat
............................... 260 °C for 10 sec.
Electrical Specifi cations General Specifi cations
Core ....................Ferrite DR and RI core
Wire ............................Enameled copper
Terminal ....................................Ag/Ni/Sn
Rated Current ..Ind. drop 35 % typ. at Isat
Temp. Rise.......30 °C max. at rated Irms
Packaging .................... 800 pcs. per reel
Materials
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
Bourns
Part Number
Inductance
@ 100 KHz
Q
Ref.
Test
Freq.
(MHz)
SRF
Typ.
(MHz)
RDC
Max.
(mΩ)
I rms
Max.
(A)
I sat
Typ.
(A)
**K-
Factor
L
(µH)
Tol.
(%)
SRU6018-1R2Y 1.2 ±30 8 7.96 130 25 3.60 2.80 707
SRU6018-1R8Y 1.8 ±30 8 7.96 90 28 3.00 2.30 579
SRU6018-3R3Y 3.3 ±30 8 7.96 60 36 2.50 1.70 424
SRU6018-4R7Y 4.7 ±30 8 7.96 50 52 2.20 1.40 374
SRU6018-6R8Y 6.8 ±30 8 7.96 40 60 1.90 1.20 303
SRU6018-100Y 10 ±30 12 2.52 30 88 1.70 1.00 236
SRU6018-150Y 15 ±30 12 2.52 24 130 1.50 0.80 193
SRU6018-220Y 22 ±30 14 2.52 18 190 1.20 0.65 163
SRU6018-330Y 33 ±30 10 2.52 16 255 1.00 0.58 130
SRU6018-470Y 47 ±30 12 2.52 14 410 0.80 0.46 108
SRU6018-680Y 68 ±30 12 2.52 12 600 0.62 0.36 90
SRU6018-101Y 100 ±30 20 2.52 9 715 0.50 0.34 77
*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.
Flux Density Bp-p (gauss)
100
1000
10
100 1000
1 MHz
500 KHz
300 KHz
200 KHz
100 KHz
50 KHz
10000
1
0.1
0.01
Core Loss (mW)
Core Loss vs. Flux Density
