12
34
12
43
DUAL INDUCTOR MODE SERIES MODE
2.50
(.098)
REF.
REF.
REF. 2.50
(.098)
REF.
0.50
(.020) REF. 0.50
(.020)
3.85
(.152)
REF.
3.85
(.152)
13.80
(.543)
REF.
13.80
(.543)
REF.
Features
■ 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*
Applications
■ SEPIC topology
■ Power supplies for:
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, fl at panels, backlights
- Camcorders, HDTVs, car audio
systems
SRF1260 Series - Dual-Winding Shielded Power Inductors
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Test Voltage ..................................0.25 V
Hi-pot .................500 Vrms, 3 mA, 3 sec.
Refl ow 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.
Electrical Specifi cations @ 25 °C
Bourns
Part No.
Parallel Rating Series Rating
Inductance
@ 100 KHz
L (μH)
Tol.
(%)
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
Inductance
@ 100 KHz
L (μH)
Tol.
(%)
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
SRF1260-R47Y 0.47 ±30 0.0053 17.6 33 1.88 ±30 0.0212 8.8 16.5
SRF1260-1R0Y 1.0 ±30 0.0062 15 23.6 4 ±30 0.026 7.51 11.8
SRF1260-1R5Y 1.5 ±30 0.0073 13.8 18.3 6 ±30 0.0302 6.89 9.15
SRF1260-2R2Y 2.2 ±30 0.0085 10.9 15 8.8 ±30 0.0333 5.46 7.5
SRF1260-3R3Y 3.3 ±30 0.0101 9.26 12.7 13.2 ±30 0.0372 4.63 6.35
SRF1260-4R7Y 4.7 ±30 0.0137 7.18 9.71 18.8 ±30 0.0479 3.59 4.86
SRF1260-6R8Y 6.8 ±30 0.0186 6.64 8.68 27.2 ±30 0.0672 3.32 4.34
SRF1260-8R2Y 8.2 ±30 0.0194 5.54 7.86 32.8 ±30 0.0737 2.77 3.93
SRF1260-100M 10 ±20 0.0246 5.35 7.17 40 ±20 0.0934 2.67 3.59
SRF1260-150M 15 ±20 0.0329 4.27 5.69 60 ±20 0.125 2.13 2.85
SRF1260-220M 22 ±20 0.0451 3.7 4.71 88 ±20 0.172 1.84 2.36
SRF1260-330M 33 ±20 0.0618 3.28 3.84 132 ±20 0.256 1.64 1.92
SRF1260-470M 47 ±20 0.086 2.71 3.24 188 ±20 0.34 1.35 1.62
SRF1260-680M 68 ±20 0.117 2.22 2.7 272 ±20 0.444 1.11 1.35
SRF1260-820M 82 ±20 0.15 2.05 2.39 328 ±20 0.568 1.03 1.2
SRF1260-101M 100 ±20 0.171 1.78 2.2 400 ±20 0.656 0.892 1.1
SRF1260-151M 150 ±20 0.254 1.48 1.81 600 ±20 0.972 0.739 0.905
SRF1260-221M 220 ±20 0.354 1.19 1.51 880 ±20 1.416 0.594 0.755
SRF1260-331M 330 ±20 0.574 1.06 1.22 1320 ±20 2.29 0.53 0.61
SRF1260-471M 470 ±20 0.83 0.87 1.02 1880 ±20 3.197 0.434 0.51
SRF1260-681M 680 ±20 1.212 0.7 0.85 2720 ±20 4.635 0.35 0.425
SRF1260-821M 820 ±20 1.46 0.6 0.77 3280 ±20 5.363 0.301 0.385
SRF1260-102M 1000 ±20 1.854 0.57 0.7 4000 ±20 6.782 0.283 0.35
General Specifi cations
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
Materials
Product Dimensions
Recommended Layout
Electrical Schematic
DIMENSIONS: MM
(INCHES)
N2
2
4
N1
1
3
N2
2
4
N1
1
3
N2
2
4
N1
1
3
PARALLEL SERIES
*RoHS COMPLIANT
How to Order
SRF1260 - 100M
Model
Value Code (see table)
43
12
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)
7.60 ± 0.2
(.299 ± .008)
220
USER DIRECTION OF FEED
200
(7.87)
NO COMPONENT NO COMPONENTCOMPONENTS
400
(15.75)
START
4.0
(.157)
16.0
(.630)
END
SRF0504 Series - Line Filter
Packaging Specifi cations
DIMENSIONS: MM
(INCHES)
QTY: 400 PCS. PER REEL
REV. 05/12
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
SRF1260 Series - Dual-Winding Shielded Power Inductors
Asia-Pacifi c: 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
26 +0
(1.024 +0)
30.4
(1.197)
2.0 ± 0.5
(.079 ± .020)
50.0 -0
(1.97 -0)
330
(12.99)DIA.
13.0 ± 0.5
(.512 ± .020) DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
24.0
(.945)
