SRF0703 Datasheet, PDF (1/2 Pages) Bourns Electronic Solutions – Dual-Winding Shielded Power Inductors

*RoHS ^COMPLIANT
471
Features
■ Multiple applications: parallel, series,
dual-inductor and transformer
■ Magnetically shielded, low radiation
■ Inductance range: 0.33 to 4000 μH
■ Rated current up to 6.19 A
■ RoHS compliant*
Applications
■ SEPIC topology
■ Power supplies for:
- Communication equipment
- Notebooks, desktop computers,
servers
- LCDs, flat panels, backlights
- Camcorders, HDTVs, car audio
systems
SRF0703 Series - Dual-Winding Shielded Power Inductors
Electrical Specifications @ 25 °C
Parallel Rating
Series Rating
Inductance DCR
Inductance DCR
@ 100 KHz (Ω) Irms Isat @ 100 KHz (Ω) Irms Isat
Bourns Part No. L (μH) ±20 % Max. (A) (A) L (μH) ±20 % Max.
(A)
(A)
SRF0703-R33M
0.33
0.0092 6.19 14.4
1.32
0.04 3.1 7.18
SRF0703-1R0M
1.0
0.0135 5.25 7.97
4
0.072 2.63 3.99
SRF0703-1R5M
1.5
0.0191 4.64 6.52
6
0.11 2.32 3.26
SRF0703-2R2M
2.2
0.0217 4.11 5.52
8.8
0.132 2.06 2.76
SRF0703-3R3M
3.3
0.0316 3.31 4.22
13.2
0.182 1.66 2.11
SRF0703-4R7M
4.7
0.0406 3.09 3.78
18.8
0.242 1.55 1.89
SRF0703-6R8M
6.8
0.0658 2.55 3.12
27.2
0.285 1.28 1.56
SRF0703-8R2M
8.2
0.0772 2.19 2.66
32.8
0.306 1.1 1.33
SRF0703-100M
10
0.0826 2.08 2.47
40
0.342 1.04 1.24
SRF0703-150M
15
0.119 1.83 2.05
60
0.47 0.916 1.03
SRF0703-220M
22
0.15 1.62 1.67
88
0.62 0.811 0.83
SRF0703-330M
33
0.24 1.31 1.35
132
1.0 0.653 0.68
SRF0703-470M
47
0.338 1.08 1.14
188
1.28 0.542 0.57
SRF0703-680M
68
0.507 0.89 0.96
272
1.92 0.444 0.48
SRF0703-820M
82
0.61 0.86 0.89
328
2.28 0.43 0.44
SRF0703-101M
100
0.715 0.73 0.79
400
2.64 0.367 0.39
SRF0703-151M
150
0.986 0.58 0.65
600
3.63 0.289 0.32
SRF0703-221M
220
1.48 0.52 0.53
880
5.5 0.26 0.27
SRF0703-331M
330
2.16 0.42 0.44
1320
8.25 0.211 0.22
SRF0703-471M
470
2.82 0.35 0.37
1880
11.22 0.173 0.18
SRF0703-681M
680
3.96 0.29 0.31
2720
16.17 0.143 0.15
SRF0703-821M
820
5.01 0.27 0.28
3280
20.07 0.134 0.14
SRF0703-102M
1000
6.11 0.26 0.25
4000
24.42 0.128 0.13
Electrical Schematic
1
2
1
2
1
2
N1
N2
N1
N2
N1
N2
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..... 1500 pcs. per 13-inch reel
How to Order
SRF0703 - 100M
Model
Value Code (see table)
Product Dimensions
7.6
(.299)
MAX.
7.6
(.299)
MAX.
3
4
3
4
3
4
PARALLEL
SERIES
Recommended Layout
0.4
(.016)
2
3.0
(.118)
1
0.4
(.016)
2
3.0
(.118)
1
7.9
(.311)
7.9
(.311)
3
4
3
4
1.4
(.055)
DUAL INDUCTOR MODE
1.4
(.055)
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.
3.4 ± 0.2
(.134 ± .008)
2.9
(.114)
TYP.
12
2.7
(.106)
TYP.
43
1.0
(.039)
TYP.
DIMENSIONS:
MM
(INCHES)