datasheet for SRF1260

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Features
Applications
■ Multiple applications: parallel, series,
■ SEPIC topology
dual-inductor and transformer
Magnetically shielded, low radiation
Inductance range: 0.47 to 4000 μH
Rated current up to 17.6 A
RoHS compliant*
■
220
■
■
■
■ Power supplies for:
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, flat panels, backlights
- Camcorders, HDTVs, car audio
systems
SRF1260 Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Parallel Rating
L (μH)
(%)
DCR
(Ω)
Max.
0.47
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
15
22
33
47
68
82
100
150
220
330
470
680
820
1000
±30
±30
±30
±30
±30
±30
±30
±30
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
0.0053
0.0062
0.0073
0.0085
0.0101
0.0137
0.0186
0.0194
0.0246
0.0329
0.0451
0.0618
0.086
0.117
0.15
0.171
0.254
0.354
0.574
0.83
1.212
1.46
1.854
Inductance
@ 100 KHz Tol.
Bourns
Part No.
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
Series Rating
Irms
(A)
Isat
(A)
17.6
15
13.8
10.9
9.26
7.18
6.64
5.54
5.35
4.27
3.7
3.28
2.71
2.22
2.05
1.78
1.48
1.19
1.06
0.87
0.7
0.6
0.57
33
23.6
18.3
15
12.7
9.71
8.68
7.86
7.17
5.69
4.71
3.84
3.24
2.7
2.39
2.2
1.81
1.51
1.22
1.02
0.85
0.77
0.7
L (μH)
(%)
DCR
(Ω)
Max.
1.88
4
6
8.8
13.2
18.8
27.2
32.8
40
60
88
132
188
272
328
400
600
880
1320
1880
2720
3280
4000
±30
±30
±30
±30
±30
±30
±30
±30
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
0.0212
0.026
0.0302
0.0333
0.0372
0.0479
0.0672
0.0737
0.0934
0.125
0.172
0.256
0.34
0.444
0.568
0.656
0.972
1.416
2.29
3.197
4.635
5.363
6.782
Inductance
@ 100 KHz Tol.
Irms
(A)
Isat
(A)
8.8
7.51
6.89
5.46
4.63
3.59
3.32
2.77
2.67
2.13
1.84
1.64
1.35
1.11
1.03
0.892
0.739
0.594
0.53
0.434
0.35
0.301
0.283
16.5
11.8
9.15
7.5
6.35
4.86
4.34
3.93
3.59
2.85
2.36
1.92
1.62
1.35
1.2
1.1
0.905
0.755
0.61
0.51
0.425
0.385
0.35
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 +125 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 10 sec.
Materials
Core ..............................................Ferrite
Wire ............................Enameled copper
Base ................................................ LCP
Adhesive .............................. Epoxy resin
Terminal ..............................................Sn
Rated Current
............ Inductance drops 30 % at Isat
Temperature Rise .....40 °C at rated Irms
Packaging ....... 400 pcs. per 13-inch reel
How to Order
SRF1260 - 100M
Model
Value Code (see table)
Product Dimensions
12.50
MAX.
(.492)
Electrical Schematic
2
1
N2
N1
4
3
PARALLEL
12.50
(.492)
MAX.
N2
N1
4
3
2
1
N2
N1
4
3
2
1
6.00 ± 0.2
(.236 ± .008)
SERIES
Recommended Layout
2.50
(.098)
REF.
3.85
REF.
(.152)
2
1
2.50
(.098)
REF.
3.85
REF.
(.152)
2
1
13.80
(.543)
REF.
13.80
(.543)
REF.
3
REF.
4
0.50
(.020)
DUAL INDUCTOR MODE
3
REF.
5.00 ± 0.3
(.197 ± .012)
4
1
2
4
3
7.60 ± 0.2
(.299 ± .008)
0.50
(.020)
1.80 ± 0.2
(.071 ± .008)
SERIES MODE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
DIMENSIONS:
MM
(INCHES)
SRF0504
Series- Dual-Winding
- Line Filter Shielded Power Inductors
SRF1260 Series
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031)
30.4
(1.197)
13.0 ± 0.5
(.512 ± .020)
DIA.
50.0 -0
(1.97 -0)
13.0 ± 0.5
DIA.
(.512 ± .020)
26 +0
(1.024 +0)
24.0
(.945)
16.0
(.630)
END
4.0
(.157)
NO COMPONENT
COMPONENTS
START
NO COMPONENT
400
(15.75)
200
(7.87)
USER DIRECTION OF FEED
QTY: 400 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. 05/12
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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