Document 289 -1
SMT Power Inductor – SER1590 Series
Designed for high current, low voltage power supply ap-
plications, the SER1590 Series offers unmatched electri-
cal performance in an extremely robust package.
With their heavy flat wire windings, these inductors have
exceptionally low DC resistance and offer saturation current
ratings up to 50 Amps. Winding to core isolation
is 300 Vrms.
Part number
1
Inductance
2
±20% (µH)
0.30
0.50
0.60
0.68
0.80
0.90
1.0
1.2
1.5
DCR typ
3
(mOhms)
0.66
0.87
0.87
0.87
0.87
1.08
0.87
1.08
1.08
DCR max
3
(mOhms)
0.72
0.94
0.94
0.94
0.94
1.15
0.94
1.15
1.15
SRF typ
4
(MHz)
260
202
182
160
123
160
115
90
73
Isat
5
(A)
50
36
32
27
24
27
20
19
17
Irms
6
(A)
32
27
27
27
27
22
27
22
22
SER1590-301ML_
SER1590-501ML_
SER1590-601ML_
SER1590-681ML_
SER1590-801ML_
SER1590-901ML_
SER1590-102ML_
SER1590-122ML_
SER1590-152ML_
1. When ordering, please specify
termination
and
packaging
codes:
SER1590-102MLD
Termination: L
= RoHS compliant tin-silver over copper.
Special order: T
= RoHS tin-silver-copper (95.5/4/0.5)
or
S
= non-RoHS tin-lead (63/37).
Packaging: D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (250 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/
HP 4284A LCR meter or equivalent.
3. DCR measured on a Keithley 580 micro-ohmmeter.
4. SRF measured using an Agilent/HP 8753D network analyzer and
Coilcraft SMD-D test fixture.
5. DC current at which the inductance drops 10% (typ) from its value
without current.
6. Current that causes a 40°C temperature rise from 25°C ambient.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Designer’s Kit C366
contains 4 of each value
Core material
Ferrite
Core and winding loss
See www.coilcraft.com/coreloss
Terminations
RoHS tin silver over copper. Other terminations
available at additional cost.
Weight
4.14 – 5.2 g
Ambient temperature
–40°C to +85°C with
Irms
current, +85°C to
+125°C with derated current
Storage temperature
Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
250 per 13″ reel; Plastic tape: 32 mm wide, 0.4 mm thick,
32 mm pocket spacing, 10.4 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Specifications subject to change without notice.
Please check our website for latest information.
Document 289-1 Revised 10/20/08
© Coilcraft, Inc. 2009
Document 289 -2
SMT Power Inductors – SER1590 Series
L vs Frequency
1.6
1.4
1.5 µH
L vs Current
1.6
1.4
1.2 µH
1.0 µH
0.90 µH
0.80 µH
0.68 µH
0.60 µH
0.50 µH
0.30 µH
1.5 µH
Inductance (µH)
Inductance (µH)
1.2
1.0
0.8
0.6
0.4
0.2
0
0.1
1.2
1.0
0.8
0.6
0.4
0.2
0
1.2 µH
1.0 µH
0.90 µH
0.80 µH
0.68 µH
0.60 µH
0.50 µH
0.30 µH
1
10
0.1
1
10
100
Frequency (MHz)
Current (A)
Temperature Rise vs Current
70
1
Temperature rise (from 25°C)
60
50
40
30
20
10
0
0
5
10
15
0.90 µH
0.50 µH
0.60 µH
0.68 µH
0.80 µH
1.0 µH
1.2 µH
1.5 µH
2
3
Caution:
Terminal 3 is provided for mounting stability only.
This terminal is connected to the winding of the
inductor and must not be connected to ground
or any circuitry.
Recommended Land Pattern
0.30 µH
A
K
N
3
Q
B
G
M
O
C
L
20
25
30
35
40
45
P
D
E
D
K
1
2
K
L
Current (A rms)
Current Derating
120
110
C
Percent of rated current
100
90
80
70
60
50
40
F*
*F = Width of flat area on winding
0.004/0,102
I
H
J
A
max
0.62
25°C
B
max
0.64
16,26
J
0.10
2,54
C
max
0.40
10,16
K
0.15
3,81
D
0.10
2,54
L
0.18
4,57
E
0.23
5,84
M
0.35
8,89
F
0.09
2,29
N
0.25
6,35
G
0.260±0.006
6,60 ±0,15
O
0.035
0,89
P
0.16
4,06
H
0.45
11,43
Q
0.15
3,81
30
20
10
0
-40
-20
Isat
Irms
0
20
15,75
I
0.08
2,03
40
60
80
100
120 140
Ambient temperature (°C)
Dimensions are in
inches
mm
Document 289-2
Revised 10/20/08
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
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