Features
n Multiple applications: parallel, series,
dual-inductor and transformer
n Magnetically shielded, low radiation
n Inductance range: 0.47 to 4000 μH
n Heating current up to 17.6 A
n AEC-Q200 qualified
n RoHS compliant* and halogen free**
Applications
n Automotive systems:
- Driver assistant
- Information
- Entertainment
- Lighting
n DC/DC converters
n Power supplies
n SEPIC - DC/DC converters
SRF1260A 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 Soldering Heat
.............................+245 °C for 10 sec.
Temperature Rise
......................40 °C typ. at rated I rms
Inductance Drop .......... 30 % typ. at I sat
Electrical Specications @ 25 °C
Bourns
Part No.
Parallel Rating Series Rating
Inductance
@ 100 KHz/
0.25 V
L (μH)
Tol.
(%)
DCR
(W)
Max.
Irms
(A)
Isat
(A)
Inductance
@ 100 KHz/
0.25 V
L (μH)
Tol.
(%)
DCR
(W)
Max.
Irms
(A)
Isat
(A)
SRF1260A-R47Y
0.47 ±30 0.0053 17.6 33 1.88 ±30 0.0212 8.8 16.5
SRF1260A-1R0Y
1.0 ±30 0.0062 15 23.6 4 ±30 0.026 7.51 11.8
SRF1260A-1R5Y
1.5 ±30 0.0073 13.8 18.3 6 ±30 0.0302 6.89 9.15
SRF1260A-2R2Y
2.2 ±30 0.0085 10.9 15 8.8 ±30 0.0333 5.46 7.5
SRF1260A-3R3Y
3.3 ±30 0.0101 9.26 12.7 13.2 ±30 0.0372 4.63 6.35
SRF1260A-4R7Y
4.7 ±30 0.0137 7.18 9.71 18.8 ±30 0.0479 3.59 4.86
SRF1260A-6R8Y
6.8 ±30 0.0186 6.64 8.68 27.2 ±30 0.0672 3.32 4.34
SRF1260A-8R2Y
8.2 ±30 0.0194 5.54 7.86 32.8 ±30 0.0737 2.77 3.93
SRF1260A-100M
10 ±20 0.0246 5.35 7.17 40 ±20 0.0934 2.67 3.59
SRF1260A-150M
15 ±20 0.0329 4.27 5.69 60 ±20 0.125 2.13 2.85
SRF1260A-220M
22 ±20 0.0451 3.7 4.71 88 ±20 0.172 1.84 2.36
SRF1260A-330M
33 ±20 0.0618 3.28 3.84 132 ±20 0.256 1.64 1.92
SRF1260A-470M
47 ±20 0.086 2.71 3.24 188 ±20 0.34 1.35 1.62
SRF1260A-680M
68 ±20 0.117 2.22 2.7 272 ±20 0.444 1.11 1.35
SRF1260A-820M
82 ±20 0.15 2.05 2.39 328 ±20 0.568 1.03 1.2
SRF1260A-101M
100 ±20 0.171 1.78 2.2 400 ±20 0.656 0.892 1.1
SRF1260A-151M
150 ±20 0.254 1.48 1.81 600 ±20 0.972 0.739 0.905
SRF1260A-221M
220 ±20 0.354 1.19 1.51 880 ±20 1.416 0.594 0.755
SRF1260A-331M
330 ±20 0.574 1.06 1.22 1320 ±20 2.29 0.53 0.61
SRF1260A-471M
470 ±20 0.83 0.87 1.02 1880 ±20 3.197 0.434 0.51
SRF1260A-681M
680 ±20 1.212 0.7 0.85 2720 ±20 4.635 0.35 0.425
SRF1260A-821M
820 ±20 1.46 0.6 0.77 3280 ±20 5.363 0.301 0.385
SRF1260A-102M
1000 ±20 1.854 0.57 0.7 4000 ±20 6.782 0.283 0.35
General Specications
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging .................... 400 pcs. per reel
Materials
Product Dimensions
Recommended Layout
Electrical Schematics
DIMENSIONS:
MM
(INCHES)
21
34
1
2
3
4
3
DUAL INDUCTOR MODE SERIES MODE
4
2
1
7.6
(.299)
MAX.
7.6
(.299)
MAX.
TYP.
TYP.
0.4
(.016)
2.9
(.114)
1.0
(.039)
1.0
(.039)
1.73
(.068)
7.9
(.311)
0.4
(.016)
1.0
(.039)
1.73
(.068)
7.9
(.311)
3.4 ± 0.2
(.134 ± .008)
2.7
(.106)
TYP.
N2
2
4
N1
1
3
N2
2
4
N1
1
3
N2
2
4
N1
1
3
PARALLEL SERIES
How to Order
SRF1260A - 100M
Model
Value Code (see table)
220
*RoHS COMPLIANT
& AEC-Q200 QUALIFIED
*RoHS COMPLIANT
AEC APPROVED (Select Models)
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.
** Bourns follows the prevailing definition of “halogen free” in the industry. 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.
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.
4
3
1
2
12.50
(.492)
MAX.
12.50
(.492)
MAX.
6.00 ± 0.2
(.236 ± .008)
1.80 ± 0.2
(.071 ± .008)
5.00 ± 0.3
(.197 ± .012)
5.00 ± 0.3
(.197 ± .012)
DUAL INDUCTOR MODE SERIES MODE
2.15
(.085)
2.15
(.085)
1.28
(.050)
1.28
(.050)
4.50
(.177)
4.50
(.177)
13.00
(.512)
13.00
(.512)
12
34
1
2
43
12.50
(.492)
MAX.
12.50
(.492)
MAX.
6.00 ± 0.2
(.236 ± .008)
1.80 ± 0.2
(.071 ± .008)
5.00 ± 0.3
(.197 ± .012)
5.00 ± 0.3
(.197 ± .012)
DUAL INDUCTOR MODE SERIES MODE
2.15
(.085)
2.15
(.085)
1.28
(.050)
1.28
(.050)
4.50
(.177)
4.50
(.177)
13.00
(.512)
13.00
(.512)
