Features
Applications
nꢀ Multipleꢀapplications:ꢀparallel,ꢀseries,ꢀꢀ
nꢀ SEPICꢀtopology
ꢀ
dual-inductorꢀandꢀtransformer
nꢀ Powerꢀsuppliesꢀfor:ꢀ
nꢀ Magneticallyꢀshielded,ꢀlowꢀradiation
nꢀꢀInductanceꢀrange:ꢀ0.47ꢀtoꢀ4000ꢀμH
nꢀꢀRatedꢀcurrentꢀupꢀtoꢀ17.6ꢀA
nꢀ RoHSꢀcompliant*
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀꢀꢀꢀꢀ-ꢀCommunicationꢀequipmentꢀ
ꢀꢀꢀꢀꢀ-ꢀNotebooks,ꢀdesktopꢀcomputers,ꢀꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀserversꢀ
0
2
2
ꢀꢀꢀꢀꢀ-ꢀLCDs,ꢀflatꢀpanels,ꢀbacklightsꢀ
ꢀꢀꢀꢀꢀ-ꢀCamcorders,ꢀHDTVs,ꢀcarꢀaudioꢀꢀ
ꢀ
systems
ꢀ
ꢀꢀSRF1260ꢀSeriesꢀ-ꢀDual-WindingꢀShieldedꢀPowerꢀInductors
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
Series Rating
DCR
Inductance
Inductance
Bourns
Part No.
@ 100 KHz Tol.
(W)
Irms Isat @ 100 KHz Tol.
(W)
Irms
(A)
Isat
(A)
L (μH)
(%) Max.
(A)
(A)
L (μH)
(%) 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
0.47
1.0
1.5
2.2
3.3
4.7
6.8
8.2
10
15
22
33
47
±30 0.0053 17.6
±30 0.0062 15
±30 0.0073 13.8 18.3
±30 0.0085 10.9 15
33
23.6
1.88
4
6
±30 0.0212 8.8
±30 0.026 7.51 11.8
±30 0.0302 6.89 9.15
±30 0.0333 5.46
16.5
8.8
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
±20 0.34
±20 0.444 1.11 1.35
±20 0.568 1.03 1.2
±20 0.656 0.892 1.1
±20 0.972 0.739 0.905
±20 1.416 0.594 0.755
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
60
88
132
188
272
328
400
600
880
1320
1880
2720
3280
4000
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 0.83
±20 1.212
±20 1.46
How to Order
SRF1260 - 100M
±20 2.29
0.53 0.61
Model
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
Value Code (see table)
±20 1.854 0.57 0.7
Product Dimensions
12.50
MAX.
(.492)
Electrical Schematic
DOT
INDICATES
1
2
1
2
1
2
TERMINAL 1
12.50
(.492)
MAX.
N1
N2
N1
N2
N1
N2
3
4
3
4
3
4
PARALLEL
SERIES
6.00 0.2
(.236 .00ꢀ)
Recommended Layout
4.50
(.177)
4.50
(.177)
2.15
(.0ꢀ5)
2.15
(.0ꢀ5)
5.00 0.3
(.197 .012)
4
1
3
2
1
2
3
1
2
3
5.00 0.3
(.197 .012)
13.00
(.512)
13.00
(.512)
4
1.2ꢀ
(.050)
4
1.2ꢀ
(.050)
1.ꢀ0 0.2
(.071 .00ꢀ)
DUAL INDUCTOR MODE
SERIES MODE
*RoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
ꢀ
MM
(INCHES)
DIMENSIONS:
ꢀ
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀ
performanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.