Description
•125°C maximum total temperature operation
• Low profile surface mount inductor
•8.3mm x 9.5mm x 4.5mm shielded drum core
•Ferrite core material
•Inductance range from 1.5µH to 100µH
•Current range from 9.1 Amps to 0.8 Amps
•Frequency range up to 1MHz
Applications
•Server/Notebook power
•High Power LED driver, Portable devices
•Base Station, Telecom, and Networking
•Battery Chargers, RAM power supply
•Industrial and Automotive power systems
•Noise filtering output filter chokes
•Buck/Boost converters, Output converters
Environmental Data
•Storage temperature range: -40°C to +125°C
•Operating temperature range: -40°Cto +125°C
(range is application specific)
•Solder reflow temperature: +260°C max. for 10 seconds
maximum
Packaging
•Supplied in tape and reel packaging, 750 per reel
SD8350 Series
Shielded Power Inductors
Part Number Rated OCL (1) Irms(2) Isat (3) DCR (Ω) DCR (Ω) K-factor
Inductance µH±30% Amperes Amperes mΩ@20°C mΩ@20°C (4)
(µH) (Typical) (Maximum)
SD8350-1R8-R 1.8 1.5 5.50 9.1 11.8 14.0 16.0
SD8350-3R9-R 3.9 3.2 4.50 6.3 16.2 19.0 9.6
SD8350-4R7-R 4.7 4.2 4.10 5.5 18.5 22.0 8.5
SD8350-6R8-R 6.8 6.8 3.90 4.4 20.8 25.0 7.6
SD8350-100-R 10 9.9 3.20 4.0 31.4 36.0 6.3
SD8350-150-R 15 13.6 2.30 2.9 45.0 53.0 5.3
SD8350-220-R 22 20.4 1.80 2.6 63.5 75.0 4.4
SD8350-330-R 33 31.4 1.40 2.2 111.4 125.0 3.5
SD8350-470-R 47 44.9 1.30 1.8 130.0 150.0 2.9
SD8350-680-R 68 65.1 1.00 1.5 200.8 240.0 2.4
SD8350-101-R 100 99.7 0.80 1.3 308.0 360.0 2.0
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.
(2) Irms: DC current for an approximate ∆Tof 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 125°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 35% rolloff (@25°C)
(4) K-factor: Used to determine B p-p for core loss (see graph).
Bp-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
∆I (Peak to peak ripple current in Amps).
(5) Part Number Definition: SD8350-xxx-R
SD8350 = Product code and size; -xxx = Inductance value in uH;
R=decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
RoHS
2002/95/EC
Dimensions are in millimeters.
xxx = Inductance value in uH. R = decimal point. If no R is present third character = # of zeros. wwllyy = Date code, R = Revision level.
RECOMMENDED PCB LAYOUT SCHEMATIC
1
2
9.5 max.
8.3 max.
4.5 max.
2.5
1.2
6.3
XXX
wwlly R
TOP VIEW FRONT VIEW
BOTTOM VIEW
5.7
2.9
1.8
1
2
LEFT VIEW
Mechanical Diagrams
SD8350 Series
Shielded Power Inductors
Core Loss
1MHz 500kHz 300kHz
200kHz
100kHz
0. 000 1
0. 00 1
0. 01
0. 1
1
10
1 10 100 100 0
Bp-p (mT)
CoreLoss (W)
2.0
Ko=4.6 mm
B1=9.7 mm
A1=8.5 mm
Bo=10.0 mm
Ao=9.5 mm
1.5 dia
+0.1/-0.0
Bo
Ko
SECTION A-A
B1
7.5
1.5 dia
min
A
1.75
A
4.0
User direction of feed
16.0
Ao
A1 12.0
XX X
wwlly R
Parts packaged on 13" Diameter reel,
750 parts per reel.
Packaging Information
OCL Vs. Isat
0%
20%
40%
60%
80%
100%
120%
0% 20% 40% 60% 80% 100% 120% 140%
%Isat
% OCL
+85 Deg. C
+25 Deg. C
-40 Deg. C
Inductance Characteristics
SD8350 Series
Shielded Power Inductors
Temperature Rise vs. Loss
0
20
40
60
80
100
120
140
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Temperature Rise (°C)
Total Loss (W)
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1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487
T
el: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic
Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper
Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been
selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the
express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when
properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
PM-4146 3/07
© Cooper Electronic
Technologies 2007
