Features
Applications
■ Available in E12 series
■ Low profile of only 3.2 mm
■ Low inductance values
■ RoHS compliant*
■ Input/output of DC/DC converters
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
• Car radios
SDR0403 Series - SMD Power Inductors
Electrical Specifications
General Specifications
Test Voltage........................................1 V
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 Soldering Heat
Inductance 1kHz
Test
SRF
I rms
Max.
(A)
I sat
Typ.
(A)
Q
Ref.
RDC
Bourns Part No.
Frequency Min.
(Ω)
(µH)
1.0
1.4
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
Tol. %
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
(MHz)
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
0.796
0.796
0.796
1K
(MHz)
150
110
90
SDR0403-1R0ML
SDR0403-1R4ML
SDR0403-1R8ML
SDR0403-2R2ML
SDR0403-2R7ML
SDR0403-3R3ML
SDR0403-3R9ML
SDR0403-4R7ML
SDR0403-5R6ML
SDR0403-6R8ML
SDR0403-8R2ML
SDR0403-100ML
SDR0403-120ML
SDR0403-150ML
SDR0403-180ML
SDR0403-220ML
SDR0403-270KL
SDR0403-330KL
SDR0403-390KL
SDR0403-470KL
SDR0403-560KL
SDR0403-680KL
SDR0403-820KL
SDR0403-101KL
SDR0403-121KL
SDR0403-151KL
SDR0403-181KL
SDR0403-221KL
SDR0403-271KL
SDR0403-331KL
SDR0403-391KL
SDR0403-471KL
SDR0403-561KL
SDR0403-681KL
SDR0403-821KL
SDR0403-102KL
28
28
28
28
28
28
28
28
28
28
28
28
28
28
25
25
23
23
20
20
20
20
25
35
50
50
50
50
45
40
40
50
50
40
38
38
0.033
0.038
0.042
0.047
0.052
0.058
0.076
0.094
0.10
0.12
0.13
0.18
0.21
0.24
0.34
0.38
0.52
0.54
0.59
0.84
0.94
1.12
1.27
1.90
2.20
3.40
3.90
4.40
5.00
6.00
6.40
7.00
7.80
8.60
12.00
14.00
3.80
3.30
2.91
2.60
2.43
2.15
1.98
1.70
1.60
1.41
1.26
1.15
1.05
0.92
0.84
0.76
0.71
0.64
0.59
0.54
0.50
0.46
0.42
0.35
0.32
0.26
0.24
0.22
0.20
0.17
0.15
0.13
0.12
0.11
0.10
0.09
5.50
5.10
4.40
3.90
3.50
3.00
2.70
2.60
2.40
2.10
1.90
1.70
1.60
1.40
1.30
1.20
1.00
0.99
0.92
0.78
0.74
0.68
0.58
0.51
0.44
0.40
0.39
0.33
0.30
0.25
0.22
0.19
0.18
0.16
0.15
0.13
..................................260 °C for 5 sec.
80
Materials
75
Core ........................................Ferrite DR
Wire .............Enameled copper wire 130
Terminal.....................................Ag/Ni/Sn
Rated Current
....................Ind. drop 10 % typ. at Isat
Temperature Rise ..................40 °C max.
at rated Irms
65
55
50
45
40
36
Packaging ..................2000 pcs. per reel
33
12
30
Product Dimensions
15
28
4.5 ± 0.3
(.177 ± .012)
MAX.
18
23
22
20
27
17
33
15
3.2 ± 0.3
MAX.
39
14
(.126 ± .012)
47
13
56
12
1.5
(.059)
TYP.
68
11
82
10
100
120
150
180
220
270
330
390
470
560
680
820
1000
9
8
4.0 ± 0.3
MAX.
(.157 ± .012)
8
5
4
3
Recommended Layout
0.796
0.796
0.796
0.796
0.796
0.796
0.796
4.5
1K
(.177)
1.8
1K
(.071)
1K
1.5
(.059)
1K
1K
1K
Electrical Schematic
1.8
(.071)
Typical Part Marking
1
4
START
MM
(INCHES)
DIMENSIONS:
100
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
FINISH