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Document 280-1
Toroid 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 12.2 Amp
Core material
Powered iron
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
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
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
2
±20%
(µH)
DCR
max
(mOhm)
16.0
9.3
24.2
95.0
22.8
16.2
54.7
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
3
(MHz)
130
61
47
37
50
26
23.9
15.6
14.3
18.1
13.5
11.2
11.0
8.30
10.8
4.56
3.84
2.87
1.54
1.38
1.35
1.35
74
61
27.3
22.8
25.9
12.0
10%
drop
3.2
4.0
2.8
1.2
2.7
3.5
1.9
2.8
2.8
1.5
0.6
2.3
1.1
1.6
0.81
1.4
0.44
0.41
0.37
0.26
0.25
0.18
5.8
5.0
4.6
4.3
4.8
3.9
Isat
(A)
4
20% 30% Body
drop drop size
4.8
6.1
4.2
1.8
4.2
5.4
2.8
4.1
4.2
2.3
1.0
3.4
1.6
2.3
1.3
2.0
0.68
0.64
0.59
0.40
0.41
0.29
8.8
7.8
6.7
6.4
7.2
5.7
6.7
8.2
5.8
2.5
5.8
7.3
3.7
5.7
5.8
3.1
1.3
4.6
2.2
3.1
1.7
2.7
0.95
0.90
0.81
0.55
0.57
0.41
12.2
10.9
9.1
8.5
9.9
7.7
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
1. When ordering, specify
termination
and
packaging
codes:
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. SRF measured on Agilent/HP 8753ES network analyzer.
4. DC current that causes the specified inductance drop
from its value without current.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before
soldering.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 280-1
Revised 12/20/16
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 280-2
Toroid Power Inductors – SPT Series
Body size 1 - 5
Body size 6 - 8
Dash
number
G
SPT44H-123
A max
E
XXXX Y
Internal
code
Parts manufactured
prior to September 2011
may be marked differently.
F
Recommended
Land Pattern
B max
C max
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. ±0.030/0,76
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
Current (A)
1
10
0.1
1
10
100
Current (A)
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 280-2 Revised 12/20/16
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 280-3
Toroid Power Inductors – SPT Series
Typical Temperature Rise vs Current*
70
70
Temperature rise (°C)
60
50
40
30
20
10
0
0
Temperature rise (°C)
SPT20L-233
SPT20L-702
SPT20L-112
60
50
40
30
20
10
0
0
SPT50L-263
SPT50L-205
SPT50L-733
SPT50L-163
1
2
3
Current (A rms)
4
5
6
7
8
9
10
1
2
3
Current (A rms)
4
5
6
7
8
9
10
70
70
Temperature rise (°C)
SPT30L-353
50
40
30
20
10
0
0
1
2
3
4
SPT30L-123
SPT30L-522
Temperature rise (°C)
60
SPT30L-174
60
50
40
30
20
10
0
0
2
4
6
8
10
12
14
16
SPT44H-422
SPT44H-282
Current (A rms)
SPT38L-223
5
6
7
8
9
10
Current (A rms)
70
70
Temperature rise (°C)
SPT38L-733
Temperature rise (°C)
60
50
40
30
20
10
0
SPT38L-674
60
SPT38L-752
SPT50H-842
50
40
30
20
10
0
0
2
4
6
8
10
12
14
16
SPT50H-652
SPT38L-382
0
1
2
3
Current (A rms)
4
5
6
7
8
9
10
Current (A rms)
70
70
50
40
30
20
10
0
0
1
SPT38L-294
SPT44L-413
SPT44L-143
Temperature rise (°C)
Temperature rise (°C)
60
SPT44L-115
60
50
40
30
20
10
0
0
2
4
6
8
10
12
14
16
SPT68H-183
SPT68H-113
SPT44L-792
2
3
Current (A rms)
4
5
6
7
8
9
10
Current (A rms)
* Measured at 25°C ambient.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 280-3 Revised 12/20/16
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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