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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)
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Isat (A)4
120 ±20 320 ±2˚C 42˚C Body
rise size
Irms (A)5
1. Please specify termination and packaging codes:
L2
±±20 max
DCR
SRF
typ3
SPT68H-183MLD
Part number1
(µH) (mOhm) (MHz) drop drop drop rise
Termination: L = RoHS compliant tin-silver over copper.
Special order:
Standard series
SPT20L-112ML_
SPT38L-382ML_
SPT30L-522ML_
SPT20L-702ML_
SPT38L-752ML_
SPT44L-792ML_
SPT30L-123ML_
SPT44L-143ML_
SPT50L-163ML_
SPT38L-223ML_
SPT20L-233ML_
SPT50L-263ML_
SPT30L-353ML_
SPT44L-413ML_
SPT38L-733ML_
SPT50L-733ML_
SPT30L-174ML_
SPT38L-294ML_
SPT50L-564ML_
T = RoHS tin-silver-copper
(95.5/4/0.5) or S = non-RoHS
tin-lead (63/37).
1.1
3.8
5.2
7.0
7.5
7.9
12
14
16
22
23
26
35
41
73
73
170
290
560
16.0 130
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
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
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
4.7
6.5
4.2
1.8
4.4
5.6
2.5
4.2
5.1
3.1
0.71
4.3
1.3
2.3
6.1
8.5
5.7
2.2
6.5
7.5
3.3
5.7
7.1
3.8
1.0
6.0
1.6
3.1
1.5
3.5
0.88
1.0
0.90
0.65
0.63
0.70
1
3
2
1
3
4
2
4
5
3
1
5
2
4
3
5
2
3
5
9.3
24.2
95.0
61
47
37
Packaging: D= 13″ machine-ready reel
EIA-481 embossed plastic tape.
Body size 1:
750 per full reel.
22.8
16.2
54.7
23.6
19.7
50
26
23.9
15.6
14.3
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.
Quantities less than full reel
available: in tape (not machine
ready) or with leader and trailer
($25 charge).
63
320
18.1
13.5
11.2
11.0
8.30 1.6
10.8
4.56 1.4
3.84 0.44 0.68 0.95
2.87 0.41 0.64 0.90
1.54 0.37 0.59 0.81
B= Less than full reel
32
166
85
290
133
640
657
550
In an effort to simplify our part
numbering system, Coilcraft is
eliminating the need for multiple
packaging codes. When ordering,
simply change the last letter of your
part number from B to D.
0.81 1.3
2.0
1.1
2.6
0.70
0.70
0.70
0.48
0.57
0.56
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. Current that causes the specified temperature rise
from 25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”
before soldering.
SPT38L-674ML_
SPT44L-115ML_ 1100 1908
SPT50L-205ML_ 2000 1932
670 1200
1.38 0.26 0.40 0.55
1.35 0.25 0.41 0.57
1.35 0.18 0.29 0.41
3
4
5
High current series
SPT44H-282ML_
SPT44H-422ML_
SPT50H-652ML_
SPT50H-842ML_
2.8
4.2
6.5
8.4
4.6
6.6
7.2
8.5
74
72
27.3
22.8
5.8
5.0
4.6
4.3
8.8 12.2
7.8 10.9
6.7
6.4
9.7
8.8
8.6
7.1
13.6
6
6
7
7
11.8
11.7
9.8
9.1
8.5
SPT68H-113ML_
SPT68H-183ML_
11
18
8.2
12.5
25.9
12.0
4.8
3.9
7.2
5.7
9.9
7.7
8.3
6.8
11.2
9.2
8
8
Document 280-1 Revised 10/09/23
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
© Coilcraft Inc. 2023
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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