Leaded Inductors

Leaded inductors are components that 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 as opposed to an electric field, which is stored by a capacitor. These inductors can found in several different shapes, including radial, axial and through-hole components and leads attached concentrically to the opposite ends of the inductor cores or as linear components. At RS Components, we have a varied range of leaded inductors, including axial, radial, through-hole and panel-mount inductors, with products from brands such as Bourns, EPCOS, Murata Power Solutions, Panasonic, Wurth Elektronik and our own RS PRO brand.

What are leaded inductors used for?

Leaded inductors are used to suppress asymmetrical interferences in low-voltage and high-voltage circuits. They typically have ferrite cores, however it is possible to find leaded inductors with cores made of other materials, such as nano crystalline or iron. With low or DC voltages, they act as continuous circuits to keep the current flowing if there are interferences but otherwise have no effect on the signal. With high voltage applications, they are able to prevent the current from flowing due to their high resistance, thus are used to protect the circuit from voltage spikes and prevent damages.

Types of leaded inductors

Leaded inductors come in two main categories, VHF-choke and RF-choke:

  • 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. 167-6212
Mfr. Part No.13R226C
TWD18.30
Each (In a Box of 200)
units
22 mH 70mA Through Hole 48Ω ±10% 9.5mm - - 13.5mm 9.5 (Dia.) x 13.5 (H)mm - 1kHz 5mm 1300R
RS Stock No. 489-0302
Mfr. Part No.744823220
TWD168.00
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. 883-7803
Mfr. Part No.RS614-4-02
BrandSchaffner
TWD161.90
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 - - 15.5mm 23mm 25mm 15.5 x 23 x 25mm - 18 (Single Load) MHz, 22 (Dual Load) MHz 10mm RS
RS Stock No. 489-0188
Mfr. Part No.744821120
TWD123.00
Each
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. 106-8886
Mfr. Part No.51505C
TWD78.70
Each (In a Tray of 60)
units
5 mH 1.2A Radial 197mΩ - - 21.75mm 10mm 24mm 21.75 x 10 x 24mm - 100MHz 12.7mm 5100
RS Stock No. 106-7736
Mfr. Part No.1410516C
TWD82.80
Each (In a Box of 25)
units
1 mH 1.6A Radial 460mΩ ±10% 24.4mm 27.1mm 25.9mm 15.5mm 24.4 (Dia.) x 15.5mm - 1.4MHz 23.2mm 1400
RS Stock No. 715-7131
Mfr. Part No.15102C
TWD59.00
Each
units
1 μH 16.2A Radial 2760mΩ ±20% 16.8mm - - 21.3mm 16.8 (Dia.) x 21.3mm - 142MHz 13.6mm 1500
RS Stock No. 715-6747
Mfr. Part No.22R686C
TWD28.90
Each (In a Pack of 10)
units
68 mH 18mA Radial 242Ω ±10% 6.5mm 7.7mm - 10.5mm 6.5 (Dia.) x 10.5mm - 200kHz 3mm 2200R
RS Stock No. 484-6399
Mfr. Part No.7447728
TWD36.00
Each (In a Pack of 5)
units
10 μH 550mA Radial 50mΩ ±20% 7.2mm - - 10mm 7.2 (Dia.) x 10mm Ferrite 20MHz 2.54mm WE-TI
RS Stock No. 163-3350
Mfr. Part No.7447728
TWD22.80
Each (In a Tray of 120)
units
10 μH 550mA Radial 50mΩ ±20% 7.2mm - - 10mm 7.2 (Dia.) x 10mm Ferrite 20MHz 2.54mm WE-TI
RS Stock No. 905-4970
Mfr. Part No.13R226C
TWD20.00
Each (In a Bag of 5)
units
22 mH 70mA Through Hole 48Ω ±10% 9.5mm - - 13.5mm 9.5 (Dia.) x 13.5mm - 1kHz 5mm 1300R
RS Stock No. 173-1584
Mfr. Part No.IHTH1125KZEB1R0M5A
BrandVishay
TWD257.70
Each (In a Tube of 15)
units
1 μH 90A Radial 0.50mΩ ±20% 28.5mm - - 10.7mm 28.5 (Dia.) x 10.7mm - 29.3MHz 14.4mm IHTH-1125KZ-5A
RS Stock No. 860-3997
Mfr. Part No.2307-V-RC
BrandBourns
TWD91.50
Each (In a Pack of 50)
units
33 μH 11.7A Radial 13mΩ ±15% 32.51mm 45.21mm - 16.51mm 32.51 (Dia.) x 16.51mm - 1kHz 13.46mm 2300
RS Stock No. 772-0183
Mfr. Part No.B82723J2102N001
BrandEPCOS
TWD135.00
Each
units
27 mH 1A Radial 750mΩ ±30% - 28mm 18.6mm 30.5mm 28 x 18.6 x 30.5mm Ferrite - 12.5 mm, 15mm B82721A
RS Stock No. 124-1528
Mfr. Part No.7447070
TWD111.60
Each (In a Pack of 5)
units
100 μH 6A Through Hole 35mΩ ±20% 25mm - - 11mm 25 (Dia.) x 11mm Iron Powder - 8mm WE-FI
RS Stock No. 489-0289
Mfr. Part No.744823333
TWD168.00
Each
units
3.3 mH 2.5A Radial 60mΩ ±30% - 23.5mm 13.5mm 28mm 23.5 x 13.5 x 28mm - - 7.5mm WE-CMB HC
RS Stock No. 163-3395
Mfr. Part No.744823333
TWD131.30
Each (In a Tray of 90)
units
3.3 mH 2.5A Radial 60mΩ ±30% - 23.5mm 13.5mm 28mm 23.5 x 13.5 x 28mm - - 7.5mm WE-CMB
RS Stock No. 191-0598
Mfr. Part No.B78108S1104J000
BrandEPCOS
TWD13.20
Each (In a Pack of 10)
units
100 μH 370mA Axial 1.7Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 5MHz - BC
RS Stock No. 170-9251
Mfr. Part No.15102C
TWD57.00
Each (On a Reel of 40)
units
1 μH 16.2A Radial 2.76mΩ ±20% 16.8mm - 16.8mm 21.3mm 16.8 (Dia.) x 21.3mm - 142MHz 13.6mm 1500
RS Stock No. 163-4251
Mfr. Part No.7448263505
TWD694.20
Each (In a Box of 18)
units
500 μH 35A Through Hole 1.7mΩ ±30% - 47mm 23.5mm 43mm 47 x 23.5 x 43mm Ferrite 100kHz 10.5mm WE-CMB