Download

SD8328 Series
Low Profile Power Inductors
Description
RoHS
2002/95/EC
• 125°C maximum temperature operation
• Low profile surface mount inductor
• 8.3mm x 9.5mm x 3.0mm shielded drum core
• Ferrite core material
• Inductance range from 2.7µH to 100µH
• Current range from 6.6 Amps to 0.8 Amps
• Frequency range up to 1MHz
Applications
• Buck or Boost inductor
• Noise filtering output filter chokes
• Notebook power/display
• LCD Monitors/Displays/Televisions
• Battery chargers, LCD bias supplies
• Battery and Industrial power systems
• Computer, DVD players
• Portable power devices, DC-DC converters
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(range is application specific)
• Solder reflow temperature: +260°C max. for 10 seconds
maximum
Part Number
SD8328-2R5-R
SD8328-3R3-R
SD8328-4R7-R
SD8328-7R3-R
SD8328-100-R
SD8328-150-R
SD8328-220-R
SD8328-330-R
SD8328-470-R
SD8328-680-R
SD8328-101-R
Rated
Inductance
(µH)
2.5
3.3
4.7
7.3
10
15
22
33
47
68
100
Packaging
• Supplied in tape and reel packaging, 1280 per reel
OCL (1)
µH±30%
Irms(2)
Amperes
Isat (3)
Amperes
2.7
3.4
5.0
7.6
9.1
14.5
21.1
31.9
44.9
64.2
97.0
6.6
6.1
4.5
3.4
3.3
2.35
1.85
1.45
1.30
0.98
0.80
4.5
4.0
3.6
2.9
2.6
2.0
1.7
1.4
1.2
1.0
0.8
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.
(2) Irms: DC current for an approximate ∆T of 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)
DCR (Ω)
mΩ @20°C
(Typical)
12
14
19
30
36
53
76
120
150
220
330
DCR (Ω)
mΩ @20°C
(Maximum)
15.6
18.0
24.7
39
45
69
99
156
194
286
430
K-factor
(4)
43
33
23
15
11
7.2
4.9
3.3
2.3
1.6
1.1
(4) K-factor: Used to determine B p-p for core loss (see graph).
B p-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: SD8328-xxx-R
SD8328 = 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
Mechanical Diagrams
BOTTOM VIEW
TOP VIEW
1
2.5
typ
8.3
max
FRONT VIEW
RECOMMENDED PCB LAYOUT
SCHEMATIC
2.9
1.2
typ
3.0
max
1
1.8
XXX
wwlly R
9.5
max
6.3
typ
LEFT VIEW
5.7
2
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.
2
SD8328 Series
Low Profile Power Inductors
Packaging Information
4.0
1.5 dia
+0.1/-0.0
1.5 dia
min
2.0
A
1.75
7.5
Bo
B1
16.0
XXX
wwlly R
A1
A
12.0
Ko
Ao
SECTION A-A
User direction of feed
Ao=9.5 mm
Bo=10.0 mm
A1=8.5 mm
B1=9.7 mm
Ko=3.2 mm
Parts packaged on 13" Diameter reel,
1,280 parts per reel.
Core Loss
10
500kHz
1MHz
300kHz
200kHz
1
Core Loss (W)
100kHz
0.1
0.01
0.001
0.0001
1
10
100
Bp-p (mT)
1000
SD8328 Series
Low Profile Power Inductors
Temperature Rise vs. Loss
160
Temperature Rise (ºC)
140
120
100
80
60
40
20
0
0.0
0.2
0.4
0.6
0.8
1.0
Total Power Loss (W)
Inductance Characteristics
OCL Vs. Isat
120.0%
100.0%
% OCL
80.0%
60.0%
+85 Deg.C
40.0%
+25 Deg.C
20.0%
-40 Deg.C
0.0%
0.0%
20.0%
40.0%
60.0%
80.0%
100.0%
120.0%
% Isat
PM-4140 3/07
© Cooper Electronic
Technologies 2007
Visit us on the Web at www.cooperbussmann.com
1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487
Tel: +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.
Similar pages