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
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selected, it should be tested by the user in all possible applications.
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properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.