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. 228-618
Mfr. Part No.1447440C
$7.89
Each
units
470 μH 4A Radial 125mΩ ±10% 31.7mm 31.8mm 29.8mm 21.8mm 31.7 x 29.8 x 21.8mm - 1.4MHz 29mm 1400
RS Stock No. 288-036
Mfr. Part No.B82722A2302N001
BrandEPCOS
$4.52
Each
units
1.2 mH 3A Radial 56mΩ ±30% - 22.7mm 22.7mm 13.3mm 22.7 x 22.3 x 13.3mm Ferrite - 20mm B82721A
RS Stock No. 167-8306
Mfr. Part No.B82722A2302N001
BrandEPCOS
$2.382
Each (In a Box of 600)
units
1.2 mH 3A Radial 56mΩ ±30% - 22.7mm 22.3mm 13.3mm 22.7 x 22.3 x 13.3mm Ferrite - 12.5mm, 20 mm B82722A
RS Stock No. 240-618
Mfr. Part No.22R473C
$0.975
Each (In a Pack of 10)
units
47 μH 770mA Radial 220mΩ ±10% 6.5mm 45mm - 10.5mm 6.5 (Dia) x 10.5mm - 10.9MHz 3mm 2200R
RS Stock No. 106-7745
Mfr. Part No.22R473C
$0.893
Each (In a Bag of 100)
units
47 μH 770mA Radial 220mΩ ±10% 7.2mm 7.2mm 8.5mm 10.5mm 7.2 (Dia.) x 10.5mm - 10.9MHz 3mm 2200R
RS Stock No. 489-0318
Mfr. Part No.744824101
$10.07
Each
units
1 mH 10A Radial 7mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 163-3398
Mfr. Part No.744824101
$8.187
Each (In a Box of 25)
units
1 mH 10A Radial 7mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 213-1819
Mfr. Part No.B82111B0000C021
BrandEPCOS
$4.30
Each
units
5 μH 10A Axial 5mΩ - 9.5mm 34mm - - 9.5 (Dia.) x 34mm Ferrite 175MHz - B82111B
RS Stock No. 638-7785
Mfr. Part No.22R104C
$1.057
Each (In a Pack of 10)
units
100 μH 670mA Radial 390mΩ ±10% 7.2mm 7.7mm - 10.5mm 7.2 (Dia.) x 10.5mm - 7MHz 3mm 2200R
RS Stock No. 167-8436
Mfr. Part No.B82111B0000C021
BrandEPCOS
$2.701
Each (On a Reel of 150)
units
5 μH 10A Axial 5mΩ ±20% 9.5mm 34mm - - 9.5 (Dia.) x 34mm Ferrite 175MHz - B82111B
RS Stock No. 106-7755
Mfr. Part No.22R104C
$0.95
Each (In a Bag of 100)
units
100 μH 670mA Radial 390mΩ ±10% 7.2mm 7.2mm 8.5mm 10.5mm 7.2 (Dia.) x 10.5mm - 7MHz 3mm 2200R
RS Stock No. 880-7171
Mfr. Part No.B82134A5202M000
BrandEPCOS
$3.256
Each (In a Bag of 5)
units
20 μH 2A Axial 150mΩ ±20% 7.5mm 30mm - - 7.5 (Dia.) x 30mm Carbonyl Iron 59MHz 32.5mm VHF
RS Stock No. 880-7121
Mfr. Part No.B82131A5202M000
BrandEPCOS
$2.806
Each (In a Bag of 5)
units
3 μH 2A Axial 90mΩ ±20% 5mm 15mm - - 5 (Dia.) x 15mm Carbonyl Iron 113MHz 17.5mm VHF
RS Stock No. 489-0122
Mfr. Part No.744743102
$2.616
Each (In a Pack of 10)
units
1 mH 420mA Radial 2.5Ω ±10% 8mm - - 12.5mm 8 (Dia.) x 12.5mm Ferrite - 5mm WE-TI
RS Stock No. 166-0181
Mfr. Part No.B82144A2225J000
BrandEPCOS
$0.43
Each (On a Reel of 1500)
units
2.2 mH 120mA Axial ±5% 5.2mm 12mm - - 5.2 (Dia.) x 12mm Ferrite 800kHz 15mm LBC
RS Stock No. 163-3309
Mfr. Part No.744743102
$2.168
Each (In a Tray of 100)
units
1 mH 420mA Radial 2.5Ω ±5% 8mm - - 12.5mm 8 (Dia.) x 12.5mm Ferrite 1.6MHz 5mm WE-TI
RS Stock No. 163-3397
Mfr. Part No.744823601
$6.09
Each (In a Box of 90)
units
1 mH 6A Radial 13mΩ ±30% - 25mm 17mm 26.5mm 25 x 17 x 26.5mm - - 10.7mm WE-CMB
RS Stock No. 228-179
BrandRS PRO
$4.91
Each
units
100 μH 550mA Axial - - 3.3mm 67.54mm - 9.14mm 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS Stock No. 736-1169
Mfr. Part No.RL622-104K-RC
BrandBourns
$1.45
Each (In a Bag of 10)
units
100 mH 20mA Radial 235Ω ±10% 8.5mm - - 11mm 8.5 (Dia.) x 11mm Ferrite 100kHz 5mm RL622
RS Stock No. 172-9728
Mfr. Part No.RL622-104K-RC
BrandBourns
$1.05
Each (In a Bag of 100)
units
100 mH 20mA Radial 235Ω ±10% 8.5mm - - 11mm 8.5 (Dia.) x 11mm Ferrite 100kHz 5mm RL622