Document 356-1
SMT Power Inductors – SD43 Series
The SD43 Series features a compact and simple design,
that is both rugged and cost effective. The small footprint
(4,2 mm × 4,7 mm) makes it suitable for high-density
mounting.
With saturating current ratings up to 3.8 Amps, these
inductors offer the high current, low inductance values
required for high power dc-dc applications. They are ideal
for use in notebook computers, mobile phones, and other
handheld products. They are available in 22 inductance
values from 1 – 68 µH. Values greater than 27 µH are 10%
tolerance.
Free evaluation samples are available by contacting
Coilcraft or ordering them on-line at
www.coilcraft.com.
Part
number
1
SD43-102ML_
SD43-142ML_
SD43-182ML_
SD43-222ML_
SD43-272ML_
SD43-332ML_
SD43-392ML_
SD43-472ML_
SD43-562ML_
SD43-682ML_
SD43-822ML_
SD43-103ML_
SD43-123ML_
SD43-153ML_
SD43-183ML_
SD43-223ML_
SD43-273ML_
SD43-333KL_
SD43-393KL_
SD43-473KL_
SD43-563KL_
SD43-683KL_
L
2
(µH)
1.0 ±20%
1.4 ±20%
1.8 ±20%
2.2 ±20%
2.7 ±20%
3.3 ±20%
3.9 ±20%
4.7 ±20%
5.6 ±20%
6.8 ±20%
8.2 ±20%
10.0 ±20%
12.0 ±20%
15.0 ±20%
18.0 ±20%
22.0 ±20%
27.0 ±20%
33.0 ±10%
39.0 ±10%
47.0 ±10%
56.0 ±10%
68.0 ±10%
DCR
max
(mOhm)
33.0
38.0
42.0
47.0
52.0
58.0
76.0
94.0
101.0
110.0
132.0
182.0
210.0
235.0
338.0
378.0
522.0
540.0
587.0
844.0
937.0
1117.0
SRF
typ
3
(MHz)
100
90
80
65
60
50
47
45
40
35
30
28
24
22
19
17
16
14
13
12
11
10
1. When ordering, please specify
packaging
code:
Isat
4
(A)
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
Irms
5
(A)
5.8
5.8
4.6
3.8
3.7
3.3
3.0
2.9
2.8
2.5
2.2
2.2
1.8
1.7
1.5
1.4
1.1
0.90
0.90
0.86
0.70
0.60
SD43-683KLC
Packaging: C
= 7″ machine-ready reel. EIA-481 embossed plastic
tape (500 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter C instead.
D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (2000 parts per full reel).
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/
HP 4284A impedance analyzer.
3. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft
SMD-D test fixture.
4 DC current at which the inductance drops 10% (typ) from its value
without current.
5. Average current for a 40°C rise above 25°C ambient.
6. Operating temperature range -40°C to +85°C.
7. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
Specifications subject to change without notice.
Please check our website for latest information.
ocument 356-1
Revised 10/10/06
© Coilcraft, Inc. 2006
Document 356-2
SMT Power Inductors – SD43 Series
Typical L vs Frequency
1000
100
68 µH
27 µH
Typical L vs Current
1000
100
68 µH
27 µH
Inductance (µH)
10
8.2 µH
3.3 µH
1.0 µH
Inductance (µH)
10
8.2 µH
3.3 µH
1.0 µH
1
1
0.1
0.01
0.1
1
10
0.1
0.01
0.1
1
10
Frequency (MHz)
Current (A)
0.185 max
4,70
27 µH
8.2 µH
3.3 µH
0.136 max
3,45
AC Resistance vs Frequency
10000
1000
100
1.0 µH
68 µH
AC Resistance (Ohms)
XXX
0.051
1.30
0.165 max
4,20
10
1
0.1
0.173
4,40
0.190
4,83
0.061
1,55
0.01
0.01
0.1
1
10
100
Frequency (MHz)
Typical Temperature Rise vs Current
80
Recommended
Land Pattern
Tape and reel:
500/7″ reel; 2000/13″ reel 12 mm tape width
For packaging data see Tape and Reel Specifications section.
Temperature rise (from 25°C)
70
60
50
40
30
20
10
0
0
68 µH 27 µH
8.2 µH
3.3 µH
1.0 µH
1
2
3
4
5
6
7
8
Current (A rms)
Specifications subject to change without notice.
Please check our website for latest information.
Document 356-2
Revised 10/10/06
© Coilcraft, Inc. 2006
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