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Toroidal Common Mode Line Chokes –
Standard & High L Series

  • Available in two series: standard inductance and high inductance
  • Single layer windings provide highest common mode impedance over the widest frequency range
  • Ideal for switching power supplies in the 100 – 300 kHz range of switching frequencies
  • UL1446 Class B (130°C) Insulation System (UL File E83628)
  • Creepage and clearance = 3.2 mm
  • 1250 Vrms, one minute isolation between windings
  • Refer to Designing Common Mode Filters for design guidance.
  • RoHS-compliant. Tin-silver over copper terminations.
  • Samples of several values are available in Coilcraft Designer's Kit P402

SPECIFICATIONS – Standard Series


Parts in red type are included in Coilcraft Designer's Kit P402
Part number
Click to get parts
Inductance
min (mH)
Current
rating
(Amps)
Leakage
inductance
max (µH)
SRF typ DCR1
max
(Ohms)
Interwinding
isolation
(Volts rms)
Lead
diameter
nom
Weight
(g)
P3213-AL 3.5 1.3 62 500 kHz 0.15 1250 0.051/1,29   15.8
P3214-AL 1.7 2.0 32 850 kHz 0.065 1250 0.051/1,29 16.1
P3215-AL 1.0 3.2 22 1250 kHz 0.036 1250 0.051/1,29 16.9
P3216-AL 0.75 5.0 19 1300 kHz 0.022 1250 0.051/1,29 17.6
P3217-AL 0.425 8.1 10 1750 kHz 0.012 1250 0.040/1,02 18.2
P3218-AL 0.275 13 8 2000 kHz   0.008 1250 0.051/1,29 19.8
1 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
2 All parts have #16 AWG solder coated copper wire leads except P3217-A, which has #18 AWG leads.
3 Ambient temperature range: −40°C to +85°C
4 Storage temperature range: Component: −40°C to +85°C
Packaging trays: −40°C to +80°C
5 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

SPECIFICATIONS – High Inductance Series

Part number
Click to get parts
Inductance
min (mH)
Current
rating
(Amps)
Leakage
inductance
max (µH)
SRF typ DCR
max1
(Ohms) 
Interwinding
isolation
(Vrms)
Lead
diameter
nom
Weight
(g)
P3219-AL 10.8 1.3 165 125 kHz 0.29 1250 0.051/1,29   36.0
P3220-AL 7.0 2.0 100 225 kHz 0.15 1250 0.051/1,29 38.3
P3221-AL 3.7 3.2 60 400 kHz 0.08 1250 0.051/1,29 38.7
P3222-AL 2.2 5.0 35 600 kHz 0.04 1250 0.051/1,29 40.4
P3223-AL 1.1 8.1 20 900 kHz 0.02 1250 0.040/1,02 40.9
P3224-AL 0.58 13 10 1150 kHz   0.01 1250 0.051/1,29 40.9
1 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
2 All parts have #16 AWG solder coated copper wire leads except P3223-A, which has #18 AWG leads.
3 Ambient temperature range: −40°C to +85°C
4 Storage temperature range: Component: −40°C to +85°C
Packaging trays: −40°C to +80°C
5 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: April 11, 2017