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Document 280-1
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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 40C to +85C
Maximum part temperature: The part temperature should not
exceed +85C (ambient + self-heating). Prolonged operation above
+85C may result in a permanent increase in core loss and part failure
due to thermal aging of the core material.
Storage temperature Component: 40C to +85C.
Packaging: 40C to +80C
Resistance to soldering heat Max three 40 second reflows at
+260C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C /
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.
4 5
1. Please specify termination and packaging codes:
2 Isat (A) Irms (A)
L DCR SRF
3
20% max typ 10% 20% 30% 20C 40C Body
SPT20L-112MLD
1
Part number (H) (mOhm) (MHz) drop drop drop rise rise size
Termination: L = RoHS compliant tin-silver over copper.
Standard series
Special order:
T = RoHS tin-silver-copper
SPT20L-112ML_ 1.1 16.0 130 3.2 4.8 6.7 4.7 6.1 1
(95.5/4/0.5) or S = non-RoHS
SPT38L-382ML_ 3.8 9.3 61 4.0 6.1 8.2 6.5 8.5 3
tin-lead (63/37).
SPT30L-522ML_ 5.2 24.2 47 2.8 4.2 5.8 4.2 5.7 2
Packaging: D = 13 machine-ready reel
SPT20L-702ML_ 7.0 95.0 37 1.2 1.8 2.5 1.8 2.2 1
EIA-481 embossed plastic tape.
Body size 1: 750 per full reel.
SPT38L-752ML_ 7.5 22.8 50 2.7 4.2 5.8 4.4 6.5 3
Body sizes 23: 350 per full reel.
SPT44L-792ML_ 7.9 16.2 26 3.5 5.4 7.3 5.6 7.5 4
Body size 4: 300 per full reel.
SPT30L-123ML_ 12 54.7 23.9 1.9 2.8 3.7 2.5 3.3 2 Body sizes 56: 250 per full reel.
Body sizes 78: 200 per full reel.
SPT44L-143ML_ 14 23.6 15.6 2.8 4.1 5.7 4.2 5.7 4
B = Less than full reel
SPT50L-163ML_ 16 19.7 14.3 2.8 4.2 5.8 5.1 7.1 5
In tape, but not machine ready.
SPT38L-223ML_ 22 63 18.1 1.5 2.3 3.1 3.1 3.8 3
To have a leader and trailer added
($25 charge), use code letter D
SPT20L-233ML_ 23 320 13.5 0.6 1.0 1.3 0.71 1.0 1
instead.
SPT50L-263ML_ 26 32 11.2 2.3 3.4 4.6 4.3 6.0 5
2. Inductance tested at 100 kHz, 0.1 Vrms on Agilent/
SPT30L-353ML_ 35 166 11.0 1.1 1.6 2.2 1.3 1.6 2
HP 4192A.
SPT44L-413ML_ 41 85 8.30 1.6 2.3 3.1 2.3 3.1 4
3. SRF measured on Agilent/HP 8753ES network
analyzer.
SPT38L-733ML_ 73 290 10.8 0.81 1.3 1.7 1.1 1.5 3
4. DC current that causes the specified inductance
SPT50L-733ML_ 73 133 4.56 1.4 2.0 2.7 2.6 3.5 5
drop from its value without current.
SPT30L-174ML_ 170 640 3.84 0.44 0.68 0.95 0.70 0.88 2
5. Current that causes the specified temperature rise
SPT38L-294ML_ 290 657 2.87 0.41 0.64 0.90 0.70 1.0 3
from 25C ambient.
SPT50L-564ML_ 560 550 1.54 0.37 0.59 0.81 0.70 0.90 5 6. Electrical specifications at 25C.
Refer to Doc 362 Soldering Surface Mount Components
SPT38L-674ML_ 670 1200 1.38 0.26 0.40 0.55 0.48 0.65 3
before soldering.
SPT44L-115ML_ 1100 1908 1.35 0.25 0.41 0.57 0.57 0.63 4
SPT50L-205ML_ 2000 1932 1.35 0.18 0.29 0.41 0.56 0.70 5
High current series
SPT44H-282ML_ 2.8 4.6 74 5.8 8.8 12.2 9.7 13.6 6
SPT44H-422ML_ 4.2 6.6 61 5.0 7.8 10.9 8.8 11.8 6
SPT50H-652ML_ 6.5 7.2 27.3 4.6 6.7 9.1 8.6 11.7 7
SPT50H-842ML_ 8.4 8.5 22.8 4.3 6.4 8.5 7.1 9.8 7
SPT68H-113ML_ 11 8.2 25.9 4.8 7.2 9.9 8.3 11.2 8
SPT68H-183ML_ 18 12.5 12.0 3.9 5.7 7.7 6.8 9.2 8
Document 280-1 Revised 12/20/16
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2018
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Please check web site for latest information.
Singapore + 65-6484 8412 sales@coilcraft.com.sgDocument 280-2
Toroid Power Inductors SPT Series
Body size 1 - 5 Body size 6 - 8
Dash
G
number
SPT44H-123
A max E
XXXX Y
F
Internal Parts manufactured
code prior to September 2011
Recommended
may be marked differently.
Land Pattern
B max
C max
D
0.005/ 0,13 mm
1 2 2
Size A max B max C max D E F G Weight (g)
1 0.34/8,64 0.34/8,64 0.28/7,00 0.26/6,60 0.30/7,62 0.27/6,86 0.06/1,52 0.47 0.54
2 0.44/11,05 0.44/11,18 0.37/9,50 0.35/8,89 0.40/10,16 0.36/9,14 0.06/1,52 1.42 1.59
3 0.56/14,22 0.56/14,35 0.37/9,50 0.45/11,43 0.52/13,21 0.46/11,68 0.06/1,52 2.73 3.34
4 0.59/14,99 0.61/15,62 0.41/10,50 0.50/12,70 0.55/13,97 0.51/12,95 0.06/1,52 3.57 4.08
5 0.67/17,02 0.70/17,78 0.41/10,50 0.58/14,73 0.62/15,75 0.59/14,99 0.06/1,52 5.19 5.97
6 0.66/16,89 0.66/16,89 0.41/10,50 0.56/14,22 0.49/12,45 0.57/14,48 0.08/2,03 4.23 4.48
7 0.74/18,80 0.74/18,80 0.41/10,50 0.63/16,00 0.56/14,22 0.64/16,26 0.08/2,03 6.18 6.53
8 0.94/23,88 0.94/23,88 0.41/10,50 0.82/20,83 0.70/17,78 0.83/21,08 0.08/2,03 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) Typical L vs Current (High current series)
20
10000
18
SPT50L-205
SPT68H-183
16
1000
SPT38L-674
14
SPT30L-174
SPT68H-113
12
100
10
SPT38L-223
SPT50H-842
8
10 SPT38L-752
SPT50H-652
6
SPT44H-422
SPT20L-112
4
1
SPT44H-282
2
0
0.1
0.1 1 10 100
0.01 0.11 10
Current (A)
Current (A)
Document 280-2 Revised 12/20/16
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2018
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Please check web site for latest information.
Singapore + 65-6484 8412 sales@coilcraft.com.sg
Inductance (H)
Inductance (H)