Features
Applications
■ Multiple applications: parallel, series,
■ Automotive systems:
- Driver assistant
- Information
dual-inductor and transformer
■ Magnetically shielded, low radiation
■ Inductance range: 0.47 to 4000 μH
■ Heating current up to 17.6 A
■ AEC-Q200 qualified
- Entertainment
- Lighting
■ DC/DC converters
■ Power supplies
220
■ RoHS compliant* and halogen free**
■ SEPIC - DC/DC converters
SRF1260A Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
Parallel Rating
Series Rating
DCR
................................-40 °C to +125 °C
(Temperature rise included)
Inductance
@ 100 KHz/
0.25 V
Inductance
@ 100 KHz/
0.25 V
DCR
(Ω)
Storage Temperature
Bourns
Part No.
Tol.
(%)
Irms Isat
Tol.
(Ω)
Irms
(A)
Isat
(A)
16.5
L (μH)
Max.
(A)
(A)
33
L (μH)
(%)
Max.
................................-40 °C to +125 °C
Resistance to Soldering Heat
.............................+245 °C for 10 sec.
Temperature Rise
SRF1260A-R47Y
SRF1260A-1R0Y
SRF1260A-1R5Y
SRF1260A-2R2Y
SRF1260A-3R3Y
SRF1260A-4R7Y
SRF1260A-6R8Y
SRF1260A-8R2Y
SRF1260A-100M
SRF1260A-150M
SRF1260A-220M
SRF1260A-330M
SRF1260A-470M
SRF1260A-680M
SRF1260A-820M
SRF1260A-101M
SRF1260A-151M
SRF1260A-221M
SRF1260A-331M
SRF1260A-471M
SRF1260A-681M
SRF1260A-821M
SRF1260A-102M
0.47
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
30 0.0053 17.6
1.88
30 0.0212 8.8
30 0.0062 15
23.6
4
30 0.026 7.51 11.8
30 0.0302 6.89 9.15
30 0.0073 13.8 18.3
6
......................40 °C typ. at rated I rms
Inductance Drop.......... 30 % typ. at I sat
30 0.0085 10.9
15
8.8
30 0.0333 5.46
7.5
30 0.0101 9.26 12.7
30 0.0137 7.18 9.71
30 0.0186 6.64 8.68
30 0.0194 5.54 7.86
20 0.0246 5.35 7.17
20 0.0329 4.27 5.69
20 0.0451 3.7 4.71
20 0.0618 3.28 3.84
20 0.086 2.71 3.24
20 0.117 2.22 2.7
13.2
18.8
27.2
32.8
40
30 0.0372 4.63 6.35
30 0.0479 3.59 4.86
30 0.0672 3.32 4.34
30 0.0737 2.77 3.93
20 0.0934 2.67 3.59
20 0.125 2.13 2.85
20 0.172 1.84 2.36
20 0.256 1.64 1.92
Materials
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging.................... 400 pcs. per reel
15
60
88
22
33
132
188
272
328
400
600
880
1320
1880
2720
3280
4000
How to Order
47
20 0.34
20 0.444 1.11 1.35
20 0.568 1.03 1.2
1.35 1.62
SRF1260A - 100M
68
82
20 0.15
2.05 2.39
Model
Value Code (see table)
100
150
220
330
470
680
820
1000
20 0.171 1.78 2.2
20 0.254 1.48 1.81
20 0.354 1.19 1.51
20 0.574 1.06 1.22
20 0.656 0.892 1.1
20 0.972 0.739 0.905
20 1.416 0.594 0.755
Product Dimensions
20 2.29
0.53 0.61
12.50
MAX.
(.492)
20 0.83
20 1.212
20 1.46
0.87 1.02
0.7 0.85
0.6 0.77
20 3.197 0.434 0.51
20 4.635 0.35 0.425
20 5.363 0.301 0.385
20 6.782 0.283 0.35
20 1.854 0.57 0.7
12.50
(.492)
MAX.
Electrical Schematics
1
2
1
2
1
2
N1
N2
N1
N2
N1
3
N2
6.00 0.2
3
4
3
4
4
(.236 .00ꢀ)
PARALLEL
SERIES
5.00 0.3
(.197 .012)
Recommended Layout
5.00 0.3
(.197 .012)
4.50
(.204)
4.50
(.204)
2.15
(.0ꢀ5)
2.15
(.0ꢀ5)
2
3
1
4
2
2
3
1
4
1
13.00
(.512)
13.00
(.512)
1.ꢀ0 0.2
(.071 .00ꢀ)
3
4
1.2ꢀ
1.2ꢀ
(.050)
(.050)
MM
(INCHES)
DIMENSIONS:
DUAL INDUCTOR MODE
SERIES MODE
*
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.
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