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. 489-0324
Mfr. Part No.744824622
HK$47.44
Each
units
2.2 mH 6A Radial 20mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 163-3391
Mfr. Part No.744822301
HK$28.844
Each (In a Box of 140)
units
1 mH 3A Radial 35mΩ ±30% - 17.5mm 13mm 22mm 17.5 x 13 x 22mm - - 7.7mm WE-CMB
RS Stock No. 106-7901
Mfr. Part No.1468431C
HK$35.847
Each (In a Box of 15)
units
680 μH 3.1A Radial 173mΩ ±10% - 33.1mm 31.3mm 23.3mm 33.1 x 31.3 x 23.3mm - 1MHz 28.9mm 1400
RS Stock No. 860-4001
Mfr. Part No.2317-V-RC
BrandBourns
HK$26.012
Each (In a Pack of 50)
units
270 μH 5.5A Radial 60mΩ ±15% 32.51mm - - 0.65in 1.28 (Dia.) x 0.65in - 1kHz 0.56in 2300
RS Stock No. 899-7088
Mfr. Part No.7447211471
HK$15.362
Each (In a Bag of 5)
units
470 μH 1A Radial 530mΩ ±10% 11mm - - 15mm 11 (Dia.) x 15mm Ferrite 1.6MHz 4 x 5mm WE-TIF
RS Stock No. 811-8799
Mfr. Part No.RLB0914-100KL
BrandBourns
HK$2.772
Each (In a Bag of 10)
units
10 μH 2.7A Radial 48mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 20MHz 5mm RLB
RS Stock No. 163-7950
Mfr. Part No.744750560220
HK$17.966
Each (In a Tray of 70)
units
22 μH 7.7A Radial 14.5mΩ ±20% 14.8mm - - 15.8mm 14.8 (Dia.) x 15.8mm Ferrite - 12mm WE-FAMI
RS Stock No. 163-3345
Mfr. Part No.744772330
HK$6.195
Each (In a Tray of 140)
units
33 μH 2A Radial 60mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 899-7069
Mfr. Part No.744750560220
HK$19.92
Each
units
22 μH 7.7A Radial 14.5mΩ ±20% 14.8mm - - 15.8mm 14.8 (Dia.) x 15.8mm Ferrite - 12mm WE-FAMI
RS Stock No. 617-1388
Mfr. Part No.744152
HK$40.54
Each
units
82 μH 7.7A Lead Wire 30mΩ ±20% 28mm - 12mm - 28 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 191-0431
Mfr. Part No.B78108S1332K000
BrandEPCOS
HK$3.024
Each (In a Pack of 10)
units
3.3 μH 900mA Axial 290mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 115MHz - BC
RS Stock No. 163-3636
Mfr. Part No.744151
HK$16.17
Each (In a Bag of 100)
units
48 μH 8.1A Lead Wire 25mΩ ±20% 30mm - 12mm - 30 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 106-7735
Mfr. Part No.1447423C
HK$21.924
Each (In a Box of 25)
units
470 μH 2.3A Radial 222mΩ ±10% - 27.2mm 25.9mm 15.5mm 27.2 x 25.9 x 15.5mm - 2MHz 23.3mm 1400
RS Stock No. 106-7945
Mfr. Part No.13R104C
HK$4.788
Each (In a Box of 200)
units
100 μH 1A - 240mΩ ±10% 9.5mm - - 13.5mm 9.5 (Dia.) x 13.5mm - 1kHz 5mm 1300R
RS Stock No. 617-1394
Mfr. Part No.744151
HK$24.71
Each
units
48 μH 8.1A Lead Wire 25mΩ ±20% 30mm - 12mm - 30 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 163-3298
Mfr. Part No.7447075
HK$40.792
Each (In a Bag of 45)
units
860 μH 3A Lead Wire 150mΩ ±20% 28.5mm - 16mm - 28.5 (Dia.) x 16mm Composite Iron Powder - 14mm WE-FI
RS Stock No. 163-3339
Mfr. Part No.744772100
HK$6.762
Each (In a Tray of 140)
units
10 μH 2.6A Radial 40mΩ ±20% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 191-1169
Mfr. Part No.B82144A2474J000
BrandEPCOS
HK$6.154
Each (In a Pack of 5)
units
470 μH 280mA Axial 2.5Ω ±5% 5.2mm 14.8mm - - 5.2 (Dia.) x 14.8mm Ferrite 1.5MHz - LBC
RS Stock No. 163-7918
Mfr. Part No.7447211471
HK$13.388
Each (In a Tray of 80)
units
470 μH 1A Radial 530mΩ ±10% 11mm - - 15mm 11 (Dia.) x 15mm Ferrite 1.6MHz 4 x 5mm WE-TIF
RS Stock No. 163-3337
Mfr. Part No.744772047
HK$6.762
Each (In a Tray of 140)
units
4.7 μH 4A Radial 18mΩ ±20% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI