Features
Applications
■ SEPIC topology
■ Power supplies for:
■ Multiple applications: parallel, series,
dual-inductor and transformer
■ Magnetically shielded, low radiation
■ Inductance range: 0.47 to 4000 μH
■ Rated current up to 17.6 A
■ RoHS compliant*
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, flat panels, backlights
- Camcorders, HDTVs, car audio
systems
220
SRF1260 Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Test Voltage..................................0.25 V
Hi-pot ................500 Vrms, 3 mA, 3 sec.
Reflow Soldering .. 230 °C; 50 sec. max.
Operating Temperature
.................................-40 °C to +105 °C
(Temperature rise included)
Storage Temperature ..-40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 10 sec.
Parallel Rating
DCR
(Ω)
Series Rating
DCR
Inductance
@ 100 KHz Tol.
Inductance
Bourns
Part No.
Irms Isat @ 100 KHz Tol.
(Ω)
Irms
(A)
Isat
(A)
L (μH)
0.47
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
(%) Max.
(A)
(A)
L (μH)
1.88
4
(%) Max.
SRF1260-R47Y
SRF1260-1R0Y
SRF1260-1R5Y
SRF1260-2R2Y
SRF1260-3R3Y
SRF1260-4R7Y
SRF1260-6R8Y
SRF1260-8R2Y
SRF1260-100M
SRF1260-150M
SRF1260-220M
SRF1260-330M
SRF1260-470M
SRF1260-680M
SRF1260-820M
SRF1260-101M
SRF1260-151M
SRF1260-221M
SRF1260-331M
SRF1260-471M
SRF1260-681M
SRF1260-821M
SRF1260-102M
30 0.0053 17.6
30 0.0062 15
33
30 0.0212 8.8
16.5
23.6
30 0.026 7.51 11.8
30 0.0302 6.89 9.15
30 0.0073 13.8 18.3
30 0.0085 10.9 15
6
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
Base ................................................LCP
Adhesive.............................. Epoxy resin
Terminal ................................... Cu/Ni/Sn
Rated Current
........... Inductance drops 30 % at Isat
Temperature Rise .... 40 °C at rated Irms
Packaging.......400 pcs. per 13-inch reel
15
60
22
88
33
132
188
272
328
400
600
880
1320
1880
2720
3280
4000
47
20 0.34
20 0.444 1.11 1.35
20 0.568 1.03 1.2
1.35 1.62
68
82
20 0.15
2.05 2.39
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
How to Order
SRF1260 - 100M
Model
20 2.29
0.53 0.61
Value Code (see table)
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
Product Dimensions
20 1.854 0.57 0.7
12.50
MAX.
(.492)
Electrical Schematic
1
2
1
2
1
2
12.50
(.492)
MAX.
N1
N2
N1
N2
N1
N2
3
4
3
4
3
4
6.00 0.2
(.236 .008)
PARALLEL
SERIES
Recommended Layout
3.85
(.152)
REF.
2.50
(.098)
REF.
3.85
(.152)
2.50
(.098)
REF.
5.00 0.3
(.197 .012)
REF.
2
3
1
4
2
3
1
4
2
3
1
4
13.80
(.543)
REF.
13.80
(.543)
REF.
7.60 0.2
(.299 .008)
0.50
(.020)
0.50
(.020)
REF.
REF.
1.80 0.2
(.071 .008)
DUAL INDUCTOR MODE
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifications are subject to change without notice.
SERIES MODE
MM
(INCHES)
DIMENSIONS:
Customers should verify actual device performance in their specific applications.