Features
■ Available in E12 series
■ Low profile of only 3.2 mm
■ Low inductance values
■ RoHS compliant*
Applications
■ Input/output of DC/DC converters
■ Power supplies for:
- Portable communications equipment
- Camcorders
- LCD TVs
SDR0403 Series - SMD Power Inductors
Test Voltage ........................................ 1 V
Operating Temperature ...-40 °C to +125 °C
(Temperature rise included)
Storage Temperature ... -55 °C to +125 °C
Moisture Sensitivity Level .......................1
................... N/A
Core ......................................... Ferrite DR
Wire ..............................Enameled copper
Terminal ......................................Ag/Ni/Sn
Rated Current ..Ind. drop 10 % typ. at Isat
Temp. Rise.........40 °C max. at rated Irms
Packaging .................... 2000 pcs. per reel
Materials
Product Dimensions
*RoHS COMPLIANT
Recommended Layout
Typical Part Marking
4.5 ± 0.3
(.177 ± .012)
MAX.
MAX.
3.2 ± 0.3
(.126 ± .012)
1.5
(.059)
MAX.
TYP.
4.0 ± 0.3
(.157 ± .012)
4.5
(.177)
1.5
(.059)
1.8
(.071)
1.8
(.071)
DIMENSIONS: MM
(INCHES)
Inductance 1kHz Q Test SRF RDC I rms I sat
Bourns Part No. (μH) Tol. % Ref. Frequency Min. Max. Max. Typ.
(MHz) (MHz) (Ω) (A) (A)
SDR0403-1R0ML 1.0 ± 20 28 7.96 150 0.033 3.80 5.50
SDR0403-1R4ML 1.4 ± 20 28 7.96 110 0.038 3.30 5.10
SDR0403-1R8ML 1.8 ± 20 28 7.96 90 0.042 2.91 4.40
SDR0403-2R2ML 2.2 ± 20 28 7.96 80 0.047 2.60 3.90
SDR0403-2R7ML 2.7 ± 20 28 7.96 75 0.052 2.43 3.50
SDR0403-3R3ML 3.3 ± 20 28 7.96 65 0.058 2.15 3.00
SDR0403-3R9ML 3.9 ± 20 28 7.96 55 0.076 1.98 2.70
SDR0403-4R7ML 4.7 ± 20 28 7.96 50 0.094 1.70 2.60
SDR0403-5R6ML 5.6 ± 20 28 7.96 45 0.10 1.60 2.40
SDR0403-6R8ML 6.8 ± 20 28 7.96 40 0.12 1.41 2.10
SDR0403-8R2ML 8.2 ± 20 28 7.96 36 0.13 1.26 1.90
SDR0403-100ML 10 ± 20 28 2.52 33 0.18 1.15 1.70
SDR0403-120ML 12 ± 20 28 2.52 30 0.21 1.05 1.60
SDR0403-150ML 15 ± 20 28 2.52 28 0.24 0.92 1.40
SDR0403-180ML 18 ± 20 25 2.52 23 0.34 0.84 1.30
SDR0403-220ML 22 ± 20 25 2.52 20 0.38 0.76 1.20
SDR0403-270KL 27 ± 10 23 2.52 17 0.52 0.71 1.00
SDR0403-330KL 33 ± 10 23 2.52 15 0.54 0.64 0.99
SDR0403-390KL 39 ± 10 20 2.52 14 0.59 0.59 0.92
SDR0403-470KL 47 ± 10 20 2.52 13 0.84 0.54 0.78
SDR0403-560KL 56 ± 10 20 2.52 12 0.94 0.50 0.74
SDR0403-680KL 68 ± 10 20 2.52 11 1.12 0.46 0.68
SDR0403-820KL 82 ± 10 25 2.52 10 1.27 0.42 0.58
SDR0403-101KL 100 ± 10 35 0.796 9 1.90 0.35 0.51
SDR0403-121KL 120 ± 10 50 0.796 8 2.20 0.32 0.44
SDR0403-151KL 150 ± 10 50 0.796 8 3.40 0.26 0.40
SDR0403-181KL 180 ± 10 50 0.796 5 3.90 0.24 0.39
SDR0403-221KL 220 ± 10 50 0.796 4 4.40 0.22 0.33
SDR0403-271KL 270 ± 10 45 0.796 3 5.00 0.20 0.30
SDR0403-331KL 330 ± 10 40 0.796 4 6.00 0.17 0.25
SDR0403-391KL 390 ± 10 40 0.796 3.5 6.40 0.15 0.22
SDR0403-471KL 470 ± 10 50 0.796 3 7.00 0.13 0.19
SDR0403-561KL 560 ± 10 50 0.796 2.8 7.80 0.12 0.18
SDR0403-681KL 680 ± 10 40 0.796 2.8 8.60 0.11 0.16
SDR0403-821KL 820 ± 10 38 0.796 2.5 12.00 0.10 0.15
SDR0403-102KL 1000 ± 10 38 0.252 2 14.00 0.09 0.13
100
Electrical Schematic
41
*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. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
END START
USER DIRECTION OF FEED
200
(7.874)
NO COMPONENT NO COMPONENTCOMPONENTS
3.4
(.134)
3200
(125.984)
400
(15.748)
4.0
(.157)
8.0
(.315)
12
(.472)
1.5
(.059) DIA.
100 100 100 100
SRF0504 Series - Line Filter
QTY: 2000 PCS. PER REEL
REV. 02/18
SDR0403 Series - SMD Power Inductors
EMBOSSED
CARRIER
EMBOSSED
CAVITY
0.10
(.004)
THICKNESS
MAX.
24 0
DIMENSIONS: MM
(INCHES)
14.0
(.551)
18.4
(.724)
2.0 ± 0.5
(.079 ± .020)
50.0
(1.969)
330.0
(12.992)
DIA.
13.0 ± 0.5
(.512 ± .020)DIA.
13.0 ± 0.5
(.512 ± .020)
DIA.
21.0 ± 0.8
(.827 ± .031)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
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The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
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