Document 280-1
SMT Power Inductors – SPT Series
• Toroid winding eliminates stray electromagnetic emissions
• Two versions: Standard, current ratings up to 8 Amps;
High current, with ratings up to 13.9 Amp
Core material
Ferrite
Core and winding loss
See www.coilcraft.com/coreloss
Terminations
RoHS compliant tin-silver over copper. Other
terminations available at additional cost.
Ambient temperature
–40°C to +85°C
Maximum part temperature:
The part temperature should not
exceed +85°C (ambient + self-heating). Prolonged operation
above +85°C may result in a permanent increase in core loss and
part failure due to thermal aging of the core material.
Storage temperature
Component: –40°C to +85°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
PCB washing
Only pure water or alcohol recommended
Part number
1
Standard series
SPT20L-112ML_
1.1
SPT38L-382ML_
3.8
SPT30L-522ML_
5.2
SPT20L-702ML_
7.0
SPT38L-752ML_
7.5
SPT44L-792ML_
7.9
SPT30L-123ML_
12
SPT44L-143ML_
14
SPT50L-163ML_
16
SPT38L-223ML_
22
SPT20L-233ML_
23
SPT50L-263ML_
26
SPT30L-353ML_
35
SPT44L-413ML_
41
SPT38L-733ML_
73
SPT50L-733ML_
73
SPT30L-174ML_
170
SPT38L-294ML_
290
SPT50L-564ML_
560
SPT38L-674ML_
670
SPT44L-115ML_
1100
SPT50L-205ML_
2000
High current series
SPT44H-282ML_
2.8
SPT44H-422ML_
4.2
SPT50H-652ML_
6.5
SPT50H-842ML_
8.4
SPT68H-113ML_
11
SPT68H-183ML_
18
L at 0A
2
±20%
(µH)
L
(µH)
typ
3
DCR
max
(mOhm)
16.0
9.3
19.9
95.0
18.7
16.2
47.2
23.6
19.7
63
320
32
166
85
290
133
640
657
550
1200
1908
1932
4.6
6.6
7.2
8.5
8.2
12.5
SRF
typ
4
(MHz)
360
133
60
70
73
49
33
20
19
34
21
9.2
12.0
9.5
5.0
14.0
3.3
2.3
1.0
1.2
0.73
0.40
136
72
46
23
20
9
1. When ordering, specify
termination
and
packaging
codes:
Isat
Body
(A) size
3.4
8.0
4.8
1.4
5.4
7.8
2.8
5.5
7.2
2.7
1.0
5.1
1.4
2.7
1.3
2.6
0.94
0.90
0.90
0.72
0.70
0.71
13.9
11.4
12.4
10.4
14.0
10.0
1
3
2
1
3
4
2
4
5
3
1
5
2
4
3
5
2
3
5
3
4
5
6
6
7
7
8
8
SPT20L-112MLD
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.
Body size 1:
750 per full reel.
Body sizes 2–3: 350 per full reel.
Body size 4:
300 per full reel.
Body sizes 5–6: 250 per full reel.
Body sizes 7–8: 200 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 tested at 100 kHz, 0.1 Vrms on Agilent/
HP 4192A.
3. Inductance with
Isat
current applied tested at 100 kHz,
0.1 Vrms on Agilent/HP 4284A.
4. SRF measured on Agilent/HP 8753ES network analyzer.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before
soldering.
1.01
2.5
3.8
6.2
5.1
4.9
9.4
9.0
9.3
16.2
17.6
16.1
29.7
29.1
58.1
50
114
192
350
383
670
1070
1.68
2.5
3.5
4.7
6.5
10.0
Specifications subject to change without notice.
Please check our website for latest information. Document 280-1
Revised 10/20/08
© Coilcraft, Inc. 2009
Document 280-2
SMT Power Inductors - SPT Series
Body size 1 - 5
G
Body size 6 - 8
G
A max
E
A max
E
F
F
B max
Recommended
Land Pattern
B max
Recommended
Land Pattern
C max
C max
D
0.005 / 0,13 mm
Terminations:
Tin-silver over copper
D
0.005 / 0,13 mm
Size
1
2
3
4
5
6
7
8
A max
0.34/
8,64
0.44/
11,05
0.56/
14,22
0.59/
14,99
0.67/
17,02
0.66/
16,89
0.74/
18,80
0.94/
23,88
B max
0.34/
8,64
0.44/
11,18
0.56/
14,35
0.61/
15,62
0.70/
17,78
0.66/
16,89
0.74/
18,80
0.94/
23,88
C max
0.28/
7,00
0.37/
9,50
0.37/
9,50
0.41/
10,50
0.41/
10,50
0.41/
10,50
0.41/
10,50
0.41/
10,50
D
1
0.26/
6,60
0.35/
8,89
0.45/
11,43
0.50/
12,70
0.58/
14,73
0.56/
14,22
0.63/
16,00
0.82/
20,83
E
2
0.30/
7,62
0.40/
10,16
0.52/
13,21
0.55/
13,97
0.62/
15,75
0.49/
12,45
0.56/
14,22
0.70/
17,78
F
2
0.27/
6,86
0.36/
9,14
0.46/
11,68
0.51/
12,95
0.59/
14,99
0.57/
14,48
0.64/
16,26
0.83/
21,08
G
0.06/
1,52
0.06/
1,52
0.06/
1,52
0.06/
1,52
0.06/
1,52
0.08/
2,03
0.08/
2,03
0.08/
2,03
Weight (g)
0.47 – 0.54
1.42 – 1.59
2.73 – 3.34
3.57 – 4.08
5.19 – 5.97
4.23 – 4.48
6.18 – 6.53
11.12 – 11.63
Dimensions are in inches /
mm
. Unless specified, tolerance is ± 0.009/0,25.
1. ±0.015/0,38
2. ±0.005/0,13
Typical L vs Current (Standard series)
10000
SPT50L-205
Typical L vs Current (High current series)
20
18
16
SPT68H-183
1000
SPT38L-674
SPT30L-174
Inductance (µH)
Inductance (µH)
14
12
10
SPT50H-842
SPT68H-113
100
SPT38L-223
10
SPT38L-752
8
6
4
2
SPT50H-652
SPT44H-422
SPT44H-282
1
SPT20L-112
0.1
0
0.01
0.1
1
10
0.1
1
10
100
Current (A)
Current (A)
Specifications subject to change without notice.
Please check our website for latest information. Document 280-2
Revised 10/20/08
© Coilcraft, Inc. 2009
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