Leaded Inductors

Leaded inductors are components with through hole features and leads attached concentrically to the opposite ends of the inductor cores. They act as resistors to changes in currents and absorb EMI (electromagnetic interference) which could affect the status of electrical circuits in devices.

Leaded inductors are composed of coils wrapped around magnetic cores and store energy in the form of a magnetic field.

What are leaded inductors used for?

They are used to suppress asymmetrical interferences in low-voltage and high-voltage circuits.

With low voltages, they act as continuous circuits to keep the current flowing if there are interferences. With high voltages, they are able to prevent current from flowing due to their high resistance, thus are used to protect the circuit from voltage spikes.

Types of leaded inductors

Leaded inductors come in two main categories:

  • VHF (very high frequency) versions are used for line voltage applications to block or filter EMI in small applications or for decoupling in telecom and entertainment electronics.
  • RF (radio frequency) versions are used in low-frequency applications of signal and control circuits and are designed to block radio frequencies while allowing audio signals to be transmitted.

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Description Price Inductance Maximum DC Current Mounting Type Maximum DC Resistance Tolerance Diameter Length Depth Height Dimensions Core Material Maximum Self Resonant Frequency Lead Pitch Series
RS Stock No. 883-7780
Mfr. Part No.RS514-4-02
BrandSchaffner
TWD138.70
Each (In a Pack of 25)
units
10 (Dual Load) μH, 40 (Dual Load) μH 4A Radial 20 (Dual Load) mΩ, 40 (Single Load) mΩ - - 21.5mm 22.5mm 13.2mm 21.5 x 22.5 x 13.2mm - 18 (Single Load) MHz, 22 (Dual Load) MHz 20.1mm RS
RS Stock No. 124-1530
Mfr. Part No.7447060
TWD98.80
Each (In a Pack of 5)
units
300 μH 2.5A Through Hole 150mΩ ±20% 21mm - - 11mm 21 (Dia.) x 11mm Ferrite, Iron Powder - 9mm WE-FI
RS Stock No. 288-222
Mfr. Part No.SF1122
TWD184.00
Each
units
2.9 mH - Flying Leads 500mΩ ±20% 32mm - 13mm - 32 (Dia.) x 13mm Composite Iron Powder - - SF
RS Stock No. 167-0188
Mfr. Part No.B82723J2102N001
BrandEPCOS
TWD82.40
Each (In a Box of 320)
units
27 mH 1A Radial 750mΩ ±30% - 28mm 18.6mm 30.5mm 28 x 18.6 x 30.5mm Ferrite - 12.5 mm, 15 mm B82721A
RS Stock No. 163-3384
Mfr. Part No.744821120
TWD83.70
Each (In a Box of 300)
units
20 mH 500mA Radial ±30% - 15mm 7.5mm 17.5mm 15 x 7.5 x 17.5mm - - 10mm WE-CMB HC
RS Stock No. 717-3499
Mfr. Part No.DFKH-22-0002
BrandSchurter
TWD111.00
Each
units
20 mH 1A Radial 500mΩ -30 → +50% - 23mm 13mm 24mm 23 x 13 x 24mm - 250kHz 10 mm, 20 mm DFKH
RS Stock No. 715-7131
Mfr. Part No.15102C
TWD82.00
Each
units
1 μH 16.2A Radial 2.76Ω ±20% 16.8mm - - 21.3mm 16.8 (Dia.) x 21.3mm - 142MHz 13.6mm 1500
RS Stock No. 489-0302
Mfr. Part No.744823220
TWD164.00
Each
units
20 mH 1.5A Radial 270mΩ ±30% - 23mm 13mm 28mm 23 x 13 x 28mm - - 7.5mm WE-CMB HC
RS Stock No. 163-3394
Mfr. Part No.744823220
TWD137.70
Each (In a Box of 90)
units
20 mH 1.5A Radial 270mΩ ±30% - 23mm 13mm 28mm 23 x 13 x 28mm - - 7.5mm WE-CMB HC
RS Stock No. 163-3306
Mfr. Part No.744742223
TWD26.10
Each (In a Tray of 140)
units
22 mH 100mA Radial 55Ω ±5% 8.5mm - - 10mm 8.5 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 110-1308
Mfr. Part No.ELC08D681E
BrandPanasonic
TWD10.50
Each (In a Bag of 1000)
units
680 μH 320mA Radial 930mΩ ±10% - 10mm 8.5mm 13mm 10 x 8.5 x 13mm Ferrite - 5mm ELC08D
RS Stock No. 715-7100
Mfr. Part No.51505C
TWD93.00
Each
units
5 mH 1.2A Radial 197mΩ - - 21.75mm 10mm 24mm 21.75 x 10 x 24mm - - 12.7mm 5100
RS Stock No. 106-7756
Mfr. Part No.22R105C
TWD18.30
Each (In a Bag of 100)
units
1 mH 170mA Radial 3.63Ω ±10% - 7.7mm - 10.5mm - - 2.1MHz 3mm 2200R
RS Stock No. 228-551
Mfr. Part No.1410516C
TWD83.00
Each
units
1 mH 1.6A Radial 419mΩ ±10% - 27.1mm 25.9mm 15.5mm 27.1 x 25.9 x 15.5mm - 1.4MHz 23.2mm 1400
RS Stock No. 769-0613
Mfr. Part No.RB8532-16-1M3
BrandSchaffner
TWD469.00
Each
units
1.3 mH 16A Radial 5.7mΩ -30 → +50% - 58mm 55mm 58mm 58 x 55 x 58mm - 400Hz 20.32mm RB
RS Stock No. 233-5392
Mfr. Part No.ELC18B470L
BrandPanasonic
TWD86.00
Each
units
47 μH 4.3A Radial 37mΩ ±10% - 20mm 18mm 27mm 20 x 18 x 27mm Ferrite - 7.5mm ELC18B
RS Stock No. 772-0152
Mfr. Part No.B82722A2301N001
BrandEPCOS
TWD106.00
Each
units
47 mH 300mA Radial 2.5Ω ±30% - 22.3mm 22.7mm 13.3mm 22.3 x 22.7 x 13.3mm Ferrite - 12.5 mm, 20 mm B82721A
RS Stock No. 675-5324
Mfr. Part No.ELC12D472E
BrandPanasonic
TWD43.80
Each (In a Pack of 5)
units
4.7 mH 410mA Radial 3.19Ω ±10% - 14mm 12.5mm 16.5mm 14 x 12.5 x 16.5mm Ferrite - 7.5mm ELC12D
RS Stock No. 617-1388
Mfr. Part No.744152
TWD169.00
Each
units
82 μH 7.7A Lead Wire 30mΩ ±20% 28mm - 12mm - 28 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 162-0142
Mfr. Part No.B82725S2103N003
BrandEPCOS
TWD272.10
Each (In a Box of 160)
units
2.8 mH 10A Radial 12.5mΩ ±30% - 40.4mm 20.5mm 37mm 40.4 x 20.5 x 37mm Ferrite 10kHz 22.86mm B82725S