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SPT Series High Current
Surface Mount Power Inductors

  • Very high current ratings - up to 12.2 Amps
  • Toroid winding virtually eliminates stray electromagnetic emissions
  • Flat top and self-leaded design for reliable surface mounting
  • RoHS compliant. 260°C compatible. Tin-silver over copper terminations.

SPECIFICATIONS

 L versus CurrentTemperature versus CurrentCore loss
 Dimensions  Standard Series   High Current Series     3D models
 Tape and reel specifications   Standard Series   High Current Series


Part number1
Click for samples
Inductance2
±20% (µH)
DCR max3
(mOhm)
SRF typ4
(MHz)
Isat (A)5 Irms (A)6 Body
size
10%
drop
20%
drop
30%
drop
20°C
rise
40°C
rise
Standard series                    
SPT20L-112ML_ 1.1 16 130 3.2 4.8 6.7 4.7 6.1 1
SPT38L-382ML_ 3.8 9.3 61 4.0 6.1 8.2 6.5 8.5 3
SPT30L-522ML_ 5.2 24.2 47 2.8 4.2 5.8 4.2 5.7 2
SPT20L-702ML_ 7.0 95 37 1.2 1.8 2.5 1.8 2.2 1
SPT38L-752ML_ 7.5 22.8 50 2.7 4.2 5.8 4.4 6.5 3
SPT44L-792ML_ 7.9 16.2 26 3.5 5.4 7.3 5.6 7.5 4
SPT30L-123ML_ 12 54.7 23.9 1.9 2.8 3.7 2.5 3.3 2
SPT44L-143ML_ 14 23.6 15.6 2.8 4.1 5.7 4.2 5.7 4
SPT50L-163ML_ 16 19.7 14.3 2.8 4.2 5.8 5.1 7.1 5
SPT38L-223ML_ 22 63 18.1 1.5 2.3 3.1 3.1 3.8 3
SPT20L-233ML_ 23 320 13.5 0.6 1.0 1.3 0.71 1.0 1
SPT50L-263ML_ 26 32 11.2 2.3 3.4 4.6 4.3 6.0 5
SPT30L-353ML_ 35 166 11.0 1.1 1.6 2.2 1.3 1.6 2
SPT44L-413ML_ 41 85 8.30 1.6 2.3 3.1 2.3 3.1 4
SPT38L-733ML_ 73 290 10.8 0.81 1.3 1.7 1.1 1.5 3
SPT50L-733ML_ 73 133 4.56 1.4 2.0 2.7 2.6 3.5 5
SPT30L-174ML_ 170 640 3.84 0.44 0.68 0.95 0.70 0.88 2
SPT38L-294ML_ 290 657 2.87 0.41 0.64 0.90 0.70 1.0 3
SPT50L-564ML_ 560 550 1.54 0.37 0.59 0.81 0.70 0.90 5
SPT38L-674ML_ 670 1200 1.38 0.26 0.40 0.55 0.48 0.65 3
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
Part number1
Click for samples
Inductance2
±20% (µH)
DCR max3
(mOhm)
SRF typ4
(MHz)
Isat (A)5 Irms (A)6 Body
size
10%
drop
20%
drop
30%
drop
20°C
rise
40°C
rise
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
1 When ordering, please specify packaging code: e.g. SPT20L-112MLD
Packaging: D = 13" reel, machine-ready
EIA-481 embossed plastic tape.
Standard series parts per reel. High Current series parts per reel.
B = Less than full reel
On tape 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 an Agilent/HP 4192A impedance analyzer.
3 DCR measured at 25°C on a micro-ohmmeter. For other operating temperatures, use this DCR at Temperature calculator.
4 SRF measured using Agilent/HP8753ES network analyzer. Details
5 Isat: DC current at which the inductance drops the specified amount from its value without current. Details
6 Irms: Current that causes the specified temperature rise from 25°C ambient.
7 Ambient temperature range: −40°C to +85°C
8 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.
9 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
10 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
11 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info..

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Updated: March 06, 2017