Features
■ Multiple confi gurations: parallel, series,
dual-inductor and transformer
■ Magnetically shielded, low radiation
■ Inductance range: 8.2 to 600 μH
■ Heating current up to 2.19 A
■ AEC-Q200 qualifi ed
■ RoHS compliant* and halogen free**
Applications
■ Automotive systems:
- Driver assistant
- Information
- Entertainment
- Lighting
■ DC/DC converters
■ Power supplies
■ SEPIC - DC/DC converters
SRF0703A Series - Dual-Winding Shielded Power Inductors
Operating Temperature
................................-40 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-40 °C to +125 °C
Resistance to Solder Heat
.............................+250 °C for 10 sec.
Temperature Rise
.......................40 °C typ. at rated
Irms
Inductance Drop ........... 30 % typ. at
Isat
Electrical Specifi cations @ 25 °C General Specifi cations
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging .................. 1500 pcs. per reel
Materials
Product Dimensions
*RoHS COMPLIANT
& AEC-Q200 QUALIFIED
DIMENSIONS:
MM
(INCHES)
How to Order
SRF0703A - 100M
Model
Value Code (see table)
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br)
and Chlorine (Cl) content is 1500 ppm or less.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.
470
Bourns Part No.
Parallel Rating Series Rating
Inductance
@ 100 kHz /
0.25 V
L (μH) ±20 %
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
Inductance
@ 100 kHz /
0.25 V
L (μH) ±20 %
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
SRF0703A-8R2M 8.2 0.0772 2.19 2.66 34.1 0.306 1.1 1.33
SRF0703A-100M 10 0.0826 2.08 2.47 39.6 0.342 1.04 1.24
SRF0703A-150M 15 0.119 1.83 2.05 59.6 0.47 0.916 1.03
SRF0703A-220M 22 0.15 1.62 1.67 89.5 0.62 0.811 0.83
SRF0703A-330M 33 0.24 1.31 1.35 140.5 1.0 0.653 0.68
SRF0703A-470M 47 0.338 1.08 1.14 194.2 1.28 0.542 0.57
SRF0703A-680M 68 0.507 0.89 0.96 289.3 1.92 0.444 0.48
SRF0703A-820M 82 0.61 0.86 0.89 324.7 2.28 0.43 0.44
SRF0703A-101M 100 0.715 0.73 0.79 397.6 2.64 0.367 0.39
SRF0703A-151M 150 0.986 0.58 0.65 608.2 3.63 0.289 0.32
SRF0703A-221M 220 1.48 0.52 0.53 922.6 5.5 0.26 0.27
SRF0703A-331M 330 2.16 0.42 0.44 1335 8.25 0.211 0.22
21
34
7.6
(.299)
MAX.
8R2
TYP.
1.0
(.039)
TYP.
2.9
(.114)
7.6
(.299)
MAX.
3.4 ± 0.2
(.134 ± .008)
2.7
(.106)
TYP.
Recommended Layout
Electrical Schematics
1
2
3
4
3
DUAL INDUCTOR MODE SERIES MODE
4
2
1
0.4
(.016)
1.4
(.055)
3.0
(.118)
7.9
(.311)
0.4
(.016)
1.4
(.055)
3.0
(.118)
7.9
(.311)
N2
2
4
N1
1
3
N2
2
4
N1
1
3
N2
2
4
N1
1
3
PARALLEL SERIES
DIMENSIONS:
MM
(INCHES)
