SRF1280-100M_13 Datasheet, PDF (1/2 Pages) Bourns Electronic Solutions – Dual-Winding Shielded Power Inductors

*RoHS ^COMPLIANT
101
Features
■ Multiple applications: parallel, series,
dual-inductor and transformer
■ Magnetically shielded, low radiation
■ Inductance range: 0.47 to 4000 μH
■ Rated current up to 17.9 A
■ RoHS compliant*
Applications
■ SEPIC topology
■ Power supplies for:
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, flat panels, backlights
- Camcorders, HDTVs, car audio
systems
SRF1280 Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
Parallel Rating
Bourns
Part No.
Inductance
@ 100 KHz Tol.
L (μH) (%)
DCR
(Ω)
Max.
Irms
(A)
SRF1280-R47Y
SRF1280-1R0Y
SRF1280-1R5Y
SRF1280-2R2Y
SRF1280-3R3Y
SRF1280-4R7Y
SRF1280-6R8Y
SRF1280-8R2Y
SRF1280-100M
SRF1280-150M
SRF1280-220M
SRF1280-330M
SRF1280-470M
SRF1280-680M
SRF1280-820M
SRF1280-101M
SRF1280-151M
SRF1280-221M
SRF1280-331M
SRF1280-471M
SRF1280-681M
SRF1280-821M
SRF1280-102M
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 0.0055 17.9
±30 0.0067 15.5
±30 0.0076 13.5
±30 0.0092 12.5
±30 0.011 10.4
±30 0.0135 8.25
±30 0.0183 7.34
±30 0.0191 6.32
±20 0.0241 6.04
±20 0.0333 5.03
±20 0.0503 4
±20 0.0664 3.23
±20 0.0898 2.95
±20 0.123 2.44
±20 0.153 2.09
±20 0.175 1.96
±20 0.261 1.59
±20 0.343 1.29
±20 0.54 1.04
±20 0.865 0.85
±20 1.296 0.76
±20 1.632 0.65
±20 1.992 0.61
Isat
(A)
56
40
31.1
25.5
21.5
16.5
13.3
12.2
11.2
9.66
7.57
6.22
5.28
4.44
4.06
3.64
3.01
2.43
2.01
1.68
1.39
1.27
1.14
Series Rating
Inductance
DCR
@ 100 KHz Tol. (Ω) Irms Isat
L (μH) (%) Max. (A) (A)
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 0.0216 8.94 28
±30 0.026 7.74 20
±30 0.0306 6.77 15.6
±30 0.0338 6.23 12.7
±30 0.04 5.23 10.8
±30 0.05 4.13 8.24
±30 0.0656 3.67 6.67
±30 0.0714 3.16 6.09
±20 0.0921 3.02 5.6
±20 0.129 2.51 4.83
±20 0.192 2 3.78
±20 0.265 1.61 3.11
±20 0.353 1.47 2.64
±20 0.469 1.22 2.22
±20 0.578 1.04 2.03
±20 0.701 0.98 1.82
±20 1.013 0.796 1.51
±20 1.38 0.645 1.22
±20 2.172 0.522 1.01
±20 3.3 0.427 0.838
±20 4.888 0.38 0.697
±20 5.896 0.325 0.633
±20 7.202 0.307 0.571
Electrical Schematic
1
2
1
2
1
2
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 +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
SRF1280 - 100M
Model
Value Code (see table)
Product Dimensions
12.50
(.492)
MAX.
N1
N2
N1
N2
3
4
3
4
PARALLEL
N1
N2
3
4
SERIES
12.50
(.492)
MAX.
Recommended Layout
2.15
(.085)
4.50
(.204)
21
13.00
(.512)
34
1.28
(.050)
DUAL INDUCTOR MODE
2.15
(.085)
2
1
4.50
(.204)
13.00
(.512)
DIMENSIONS:
MM
(INCHES)
34
1.28
(.050)
SERIES MODE
5.00 ± 0.3
(.197 ± .012)
1
4
*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.
8.00
(.315)
MAX.
5.00 ± 0.3
(.197 ± .012)
2
3
1.80 ± 0.2
(.071 ± .008)