SRF0703

PL
IA
NT
CO
M
*R
oH
S
Features
Applications
■ Multiple applications: parallel, series,
■ SEPIC topology
dual-inductor and transformer
Magnetically shielded, low radiation
Inductance range: 0.33 to 4000 μH
Rated current up to 6.19 A
RoHS compliant*
■
471
■
■
■
■ 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
General Specifications
Parallel Rating
Bourns Part No.
Inductance
@ 100 KHz
L (μH) ±20 %
DCR
(Ω)
Max.
Irms
(A)
SRF0703-R33M
SRF0703-1R0M
SRF0703-1R5M
SRF0703-2R2M
SRF0703-3R3M
SRF0703-4R7M
SRF0703-6R8M
SRF0703-8R2M
SRF0703-100M
SRF0703-150M
SRF0703-220M
SRF0703-330M
SRF0703-470M
SRF0703-680M
SRF0703-820M
SRF0703-101M
SRF0703-151M
SRF0703-221M
SRF0703-331M
SRF0703-471M
SRF0703-681M
SRF0703-821M
SRF0703-102M
0.33
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
0.0092
0.0135
0.0191
0.0217
0.0316
0.0406
0.0658
0.0772
0.0826
0.119
0.15
0.24
0.338
0.507
0.61
0.715
0.986
1.48
2.16
2.82
3.96
5.01
6.11
6.19
5.25
4.64
4.11
3.31
3.09
2.55
2.19
2.08
1.83
1.62
1.31
1.08
0.89
0.86
0.73
0.58
0.52
0.42
0.35
0.29
0.27
0.26
Series Rating
Isat
(A)
Inductance
@ 100 KHz
L (μH) ±20 %
DCR
(Ω)
Max.
Irms
(A)
Isat
(A)
14.4
7.97
6.52
5.52
4.22
3.78
3.12
2.66
2.47
2.05
1.67
1.35
1.14
0.96
0.89
0.79
0.65
0.53
0.44
0.37
0.31
0.28
0.25
1.32
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
0.04
0.072
0.11
0.132
0.182
0.242
0.285
0.306
0.342
0.47
0.62
1.0
1.28
1.92
2.28
2.64
3.63
5.5
8.25
11.22
16.17
20.07
24.42
3.1
2.63
2.32
2.06
1.66
1.55
1.28
1.1
1.04
0.916
0.811
0.653
0.542
0.444
0.43
0.367
0.289
0.26
0.211
0.173
0.143
0.134
0.128
7.18
3.99
3.26
2.76
2.11
1.89
1.56
1.33
1.24
1.03
0.83
0.68
0.57
0.48
0.44
0.39
0.32
0.27
0.22
0.18
0.15
0.14
0.13
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
MAX.
(.299)
Electrical Schematic
1
2
N1
1
N2
3
2
N1
4
1
N2
3
2
N1
4
7.6
(.299)
MAX.
N2
4
3
PARALLEL
SERIES
3.4 ± 0.2
(.134 ± .008)
Recommended Layout
0.4
(.016)
2
3.0
(.118)
0.4
(.016)
1
2
3.0
(.118)
1
7.9
(.311)
3
7.9
(.311)
4
1.4
(.055)
3
4
1.4
(.055)
DUAL INDUCTOR MODE
2.9
TYP.
(.114)
1
2
4
3
2.7
(.106)
TYP.
1.0
TYP.
(.039)
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.
DIMENSIONS:
MM
(INCHES)
SRF0504
Series- Dual-Winding
- Line Filter Shielded Power Inductors
SRF0703 Series
Packaging Specifications
330
DIA.
(12.99)
2.0 ± 0.5
(.079 ± .020)
21.0 ± 0.8
(.827 ± .031)
22.4
(.882)
13.0 ± 0.5
(.512 ± .020)
DIA.
50.0 -0
(1.97 -0)
13.0 ± 0.5
DIA.
(.512 ± .020)
18 +0
(.709 +0)
16.0
(.630)
16.0
(.630)
END
4.0
(.157)
NO COMPONENT
COMPONENTS
START
NO COMPONENT
400
(15.75)
200
(7.87)
USER DIRECTION OF FEED
QTY: 1500 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
Asia-Pacific: 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
REV. 05/12
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.