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. 172-8373
Mfr. Part No.RLB0912-3R3ML
BrandBourns
TWD7.50
Each (In a Bag of 200)
units
3.3 μH 3.6A Radial - ±20% 8.7mm - - 10mm 8.7 (Dia.) x 10mm Ferrite 50MHz 5mm RLB
RS Stock No. 800-4350
Mfr. Part No.11R104C
TWD10.40
Each (In a Bag of 5)
units
100 μH 350mA - 1.1Ω ±10% 5mm - - 7.5mm 5 (Dia.) x 7.5mm - 1kHz 2mm 1100R
RS Stock No. 228-141
BrandRS PRO
TWD79.00
Each
units
10 μH 750mA Axial 95mΩ - 3.3mm 9.14mm - - 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS Stock No. 811-8884
Mfr. Part No.RLB0912-3R3ML
BrandBourns
TWD10.40
Each (In a Bag of 10)
units
3.3 μH 3.6A Radial 18mΩ ±20% 8.7mm - - 10mm 8.7 (Dia.) x 10mm Ferrite 50MHz 5mm RLB
RS Stock No. 736-2131
Mfr. Part No.7448229004
TWD201.00
Each
units
350 μH 8.5A Through Hole 5.5mΩ ±30% - 18.5mm 14.5mm 22mm 18.5 x 14.5 x 22mm - - 5mm WE-CMB HC
RS Stock No. 110-1296
Mfr. Part No.ELC08D100E
BrandPanasonic
TWD11.90
Each (In a Bag of 1000)
units
10 μH 2.8A Radial 22mΩ ±20% - 10mm 8.5mm 13mm 10 x 8.5 x 13mm Ferrite - 5mm ELC08D
RS Stock No. 163-3793
Mfr. Part No.7448229004
TWD167.90
Each (In a Box of 90)
units
350 μH 8.5A Through Hole 5.5mΩ ±30% - 18.5mm 14.5mm 22mm 18.5 x 14.5 x 22mm - - 5mm WE-CMB HC
RS Stock No. 170-9318
Mfr. Part No.11R104C
TWD9.30
Each (On a Reel of 200)
units
100 μH 350mA - 1.1Ω ±10% 5mm - - 7.5mm 5 (Dia.) x 7.5mm - 1kHz 2mm 1100R
RS Stock No. 432-4388
Mfr. Part No.744772100
TWD30.80
Each (In a Pack of 10)
units
10 μH 2.6A Radial 40mΩ ±20% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 233-5134
Mfr. Part No.ELC08D100E
BrandPanasonic
TWD31.00
Each (In a Pack of 5)
units
10 μH 2.8A Radial 22mΩ ±20% - 10mm 8.5mm 13mm 10 x 8.5 x 13mm Ferrite - 5mm ELC08D
RS Stock No. 172-7062
Mfr. Part No.RLB0914-101KL
BrandBourns
TWD7.60
Each (In a Bag of 200)
units
100 μH 1A Radial - ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 3.5MHz 5mm RLB
RS Stock No. 852-3671
Mfr. Part No.IHD1BH5R6L
BrandVishay
TWD173.30
Each (In a Pack of 50)
units
5.6 μH 3.2A Axial 20mΩ ±15% 6.85mm - - 17.78mm 6.85 (Dia.) x 17.78mm Ferrite 1kHz - IHD
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. 163-4251
Mfr. Part No.7448263505
TWD694.20
Each (In a Box of 18)
units
500 μH 35A Through Hole 2.3mΩ ±30% - 47mm 23.5mm 43mm 47 x 23.5 x 43mm Ferrite 100kHz 10.5mm WE-CMB HC
RS Stock No. 123-1535
Mfr. Part No.IHTH1125KZEB1R0M5A
BrandVishay
TWD298.00
Each
units
1 μH 90A Radial 500µΩ ±20% 28.5mm - - 10.7mm 28.5 (Dia.) x 10.7mm - 29.3MHz 14.4mm IHTH-1125KZ-5A
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. 883-7780
Mfr. Part No.RS514-4-02
BrandSchaffner
TWD162.20
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. 163-3347
Mfr. Part No.744772470
TWD25.50
Each (In a Tray of 140)
units
47 μH 1.3A Radial 100mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
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. 228-551
Mfr. Part No.1410516C
TWD87.00
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