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FP1308 Series
FLAT-PAC™
High Current Power Inductors
Description
RoHS
2002/95/EC
• 125°C maximum total temperature operation
• 12.9mm x 13.7mm x 8.0mm surface mount package
• High current handling capability, compact footprint
• Ferrite core material
• Inductance range from 110nH to 440nH
• Current range from 120 Amps to 32 Amps
• Frequency range up to 2MHz
Applications
• Voltage Regulator Modules (VRM) for servers and
microprocessors
• Multi-Phase Buck inductors
• High frequency, high current switching power supplies
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
FP1308-R11-R
FP1308-R21-R
FP1308-R26-R
FP1308-R32-R
FP1308-R44-R
Rated
Inductance
(nH)
110
210
260
320
440
Packaging
• Supplied in tape and reel packaging, 450 per reel
OCL (1)
nH±10%
Irms(2)
Amperes
Isat (3)
Amperes
110
210
260
320
440
68
68
68
68
68
120
72
60
45
32
(1) Open Circuit Inductance Test Parameters: 100kHz, 1.0V, 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 20% maximum rolloff (@25°C)
DCR
mΩ @25°C
(Typical)
0.20
0.20
0.20
0.20
0.20
DCR
mΩ @25°C
(Maximum)
0.24
0.24
0.24
0.24
0.24
K-factor
(4)
21.330
21.333
21.335
21.340
21.366
(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: FP1308-xxx-R
FP1308 = 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
1
7.62
2.54 (2plcs)
12.95 max.
SCHEMATIC
RECOMMENDED PCB LAYOUT
FRONT VIEW
BOTTOM VIEW
TOP VIEW
1
3.18
5.4
13.70 max.
FP1308-XXX
wwllyy R
7.2
8.0
LEFT VIEW
2
8.0 max.
Dimensions are in millimeters.
wwlly = Date Code. R = Revision level.
2
FP1308 Series
FLAT-PAC™
High Current Power Inductors
Packaging Information
1.5 dia
+0.1/-0.0
4.0
A
1.5 dia
min
2.0
1.75
11.5
24.0
+/-0.3
B0
FP1308-XXX
wwllyy R
K0
A
A0
SECTION A-A
A0= 13.20 mm
B0= 13.90 mm
K0= 8.20 mm
User direction of feed
Parts packaged on 13" Diameter reel,
450 parts per reel.
Core Loss
Core loss vs Bp-p
500kHz
100kHz
10
Core Loss (W)
1
300kHz
1MHz
50kHz
0.1
0.01
0.001
0.0001
1
10
Bp-p(mT)
100
1000
FP1308 Series
FLAT-PAC™
High Current Power Inductors
Temperature Rise(°C)
Temperature Rise vs. Loss
100
80
60
40
20
0
0
0.5
1
Inductance Characteristics
1.5
2
Total Loss(W)
2.5
3
OCL vs Isat
120%
100%
% of OCL
80%
60%
40%
+25 Deg.C
20%
-40 Deg.C
+125 Deg.C
0%
0%
20%
40%
60%
80%
100%
120%
140%
160%
% of Isat
PM-4148 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.
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