PL
IA
N
Features
7.6
MAX.
(.299)
Applications
n
SEPIC topology
n
Power supplies for:
T
OM
n
Multiple applications: parallel, series,
220
LE
AD
F
RE
E
dual-inductor and transformer
n
Magnetically shielded, low radiation
n
Inductance range: 0.47 to 4000 μH
7.6
(.299)
n
Rated current up to 17.6 A
MAX.
n
RoHS compliant*
*R
oH
S
C
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, flat panels, backlights
- Camcorders, HDTVs
SRF1260 Series - Dual-Winding Shielded Power Inductors
3.4 ± 0.2
(.134 ± .008)
Electrical Specifications @ 25 °C
Parallel Rating
Bourns
Part No.
Inductance
@ 100 KHz
Tol.
General Specifications
3
2.9
TYP.
(.114)
L (μH)
(%)
4
DCR
(W)
Max.
Series Rating
Inductance
@ 100 KHz
Tol.
Irms
(A)
Isat
(A)
L (μH)
(%)
DCR
(W)
Max.
Irms
(A)
Isat
(A)
SRF1260-R47Y
0.47
2.7
±30 0.0053 17.6
33
1.88
±30 0.0212
SRF1260-1R0Y
1.0
(.106)
±30 0.0062 15
23.6
4
±30 0.026
TYP.
SRF1260-1R5Y
1.5
±30 0.0073 13.8 18.3
6
±30 0.0302
SRF1260-2R2Y
2.2
±30 0.0085 10.9
15
8.8
±30 0.0333
SRF1260-3R3Y
3.3
±30 0.0101 9.26 12.7
13.2
±30 0.0372
1
2
1.0
SRF1260-4R7Y
4.7
±30 0.0137 7.18 9.71
18.8
±30 0.0479
TYP.
(.039)
SRF1260-6R8Y
6.8
±30 0.0186 6.64 8.68
27.2
±30 0.0672
SRF1260-8R2Y
8.2
±30 0.0194 5.54 7.86
32.8
±30 0.0737
SRF1260-100M
10
±20 0.0246 5.35 7.17
40
±20 0.0934
SRF1260-150M
15
±20 0.0329 4.27 5.69
60
±20 0.125
0.4
22
0.4
3.0
3.7
SRF1260-220M
±20 0.0451
4.71
88
±20
3.0
0.172
12.50
(.016)
(.016)
(.118)
(.118)
MAX.
SRF1260-330M
33
±20 0.0618 3.28 3.84
132
±20 0.256
(.492)
SRF1260-470M
±20
2
0.086 2.71 3.24
188
2
±20 0.34
1
47
1
DOT
SRF1260-680M
68
INDICATES
±20 0.117 2.22 2.7
272
±20 0.444
7.9
2.05 2.39
TERMINAL 1
SRF1260-820M
82
±20 0.15
328
±20
7.9
0.568
12.50
(.311)
(.311)
(.492)
SRF1260-101M
100
±20 0.171 1.78 2.2
400
±20 0.656
MAX.
SRF1260-151M
±20
3
0.254 1.48 1.81
600
3
±20 0.972
4
150
4
SRF1260-221M
220
±20 0.354 1.19 1.51
880
±20 1.416
1.4
1.4
SRF1260-331M
330
±20 0.574 1.06 1.22
1320
±20 2.29
(.055)
(.055)
SRF1260-471M
470
±20 0.83
0.87 1.02
SERIES MODE
±20 3.197
1880
DUAL INDUCTOR MODE
SRF1260-681M
680
±20 1.212
0.7 0.85
2720
±20 4.635
6.00 ± 0.2
SRF1260-821M
820
±20 1.46
0.6 0.77
± .008)
3280
±20 5.363
(.236
SRF1260-102M
1000
±20 1.854 0.57 0.7
4000
±20 6.782
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 +105 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 10 sec.
Moisture Sensitivity Level ...................... 1
ESD Classification (HBM) .................. N/A
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
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
SRF1260 - 100M
Model
Value Code (see table)
Electrical Schematic
1
5.00 ± 0.3
(.197 ± .012)
2
Product Dimensions
12.50
MAX.
(.492)
4
1
3
5.00 ± 0.3
(.197 ± .012)
2
1
2
DOT
INDICATES
TERMINAL 1
N1
N2
N1
1
2
N2
1.80 ± 0.2
4
(.071 ± .008)
N1
N2
12.50
(.492)
MAX.
3
4
3
3
4
PARALLEL
SERIES
6.00 ± 0.2
(.236 ± .008)
Recommended Layout
2.15
(.085)
4.50
(.177)
2.15
(.085)
4.50
(.177)
1
2
13.00
(.512)
1
2
13.00
(.512)
5.00 ± 0.3
(.197 ± .012)
4
3
5.00 ± 0.3
(.197 ± .012)
1.28
(.050)
4
3
1.28
(.050)
4
3
DUAL INDUCTOR MODE
SERIES MODE
1
2
*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.
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.
2.15
1.80 ± 0.2
(.071 ± .008)
MM
DIMENSIONS:
(INCHES)
4.50
4.50
2.15
SRF0504 Series - Line Filter
SRF1260 Series - Dual-Winding Shielded Power Inductors
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
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)
21.0 ± 0.8
(.827 ± .031)
24.0
(.945)
END
16.0
(.630)
4.0
(.157)
START
NO COMPONENT
200
(7.87)
COMPONENTS
NO COMPONENT
400
(15.75)
USER DIRECTION OF FEED
QTY: 400 PCS. PER REEL
MM
DIMENSIONS:
(INCHES)
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 03/18
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.
Embedded System
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