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. 228-191
BrandRS PRO
R 13.01
Each
units
470 μH 240mA Axial - - 3.3mm 9.14mm - - 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS stock no. 191-0598
Mfr. Part No.B78108S1104J000
BrandEPCOS
R 4.163
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. 167-8360
Mfr. Part No.B78108S1104J000
BrandEPCOS
R 2.88
Each (On a Reel of 5000)
units
100 μH 370mA Axial 1.7Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 5MHz - BC
RS stock no. 163-3398
Mfr. Part No.744824101
R 91.609
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. 489-0318
Mfr. Part No.744824101
R 116.95
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. 489-0043
Mfr. Part No.744772220
R 18.32
Each (In a Pack of 10)
units
22 μH 2.3A Radial 55mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS stock no. 163-3343
Mfr. Part No.744772220
R 12.137
Each (In a Tray of 140)
units
22 μH 2.3A Radial 55mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS stock no. 167-0422
Mfr. Part No.B82726S2163N030
BrandEPCOS
R 131.379
Each (In a Box of 156)
units
2.2 mH 16A Radial 7.1mΩ ±30% - 50mm 23mm 49mm 50 x 23 x 49mm Ferrite 10kHz 18mm B82726S
RS stock no. 163-3407
Mfr. Part No.7448258022
R 105.274
Each (In a Tray of 20)
units
2.2 mH 8A Radial 14mΩ ±30% - 30.5mm 21mm 35mm 30.5 x 21 x 35mm - - 25mm WE-CMB HC
RS stock no. 124-1527
Mfr. Part No.7447021
R 31.98
Each (In a Pack of 5)
units
100 μH 2.5A Through Hole 80mΩ ±20% 15.5mm - - 8mm 15.5 (Dia.) x 8mm Ferrite, Iron Powder - 7mm WE-FI
RS stock no. 213-6707
Mfr. Part No.B82725A2103N001
BrandEPCOS
R 141.42
Each
units
1.8 mH 10A Radial 14mΩ ±30% - 44mm 42.4mm 25mm 44 x 42.4 x 25mm Ferrite - 15mm B82721A
RS stock no. 871-1363
Mfr. Part No.B82726S2163N030
BrandEPCOS
R 146.49
Each
units
2.2 mH 16A Radial 7.1mΩ ±30% - 50mm 23mm 49mm 50 x 23 x 49mm Ferrite 10kHz 18mm B82726S
RS stock no. 489-0380
Mfr. Part No.7448258022
R 125.28
Each
units
2.2 mH 8A Radial 14mΩ ±30% - 30.5mm 21mm 35mm 30.5 x 21 x 35mm - - 25mm WE-CMB HC
RS stock no. 167-8324
Mfr. Part No.B82725A2103N001
BrandEPCOS
R 96.767
Each (In a Box of 160)
units
1.8 mH 10A Radial 14mΩ ±30% - 44mm 42.4mm 25mm 44 x 42.4 x 25mm Ferrite - 15mm B82721A
RS stock no. 106-8887
Mfr. Part No.51105C
R 40.867
Each (In a Tray of 60)
units
1 mH 3.3A Radial 38mΩ - - 21.75mm 10mm 24mm 21.75 x 10 x 24mm - - 12.7mm 5100
RS stock no. 715-7103
Mfr. Part No.51105C
R 50.99
Each
units
1 mH 3.3A Radial 38mΩ - - 21.75mm 10mm 24mm 21.75 x 10 x 24mm - - 12.7mm 5100
RS stock no. 863-1286
Mfr. Part No.760308103205
R 157.61
Each
units
11 μH 2.5A Axial 200mΩ ±10% - 34mm 0.89mm 26.5mm 34 x 26.5 x 0.89mm Ferrite 16MHz 5mm WE-WPCC
RS stock no. 432-4322
Mfr. Part No.744772010
R 18.407
Each (In a Pack of 10)
units
1 μH 7.5A Radial 6mΩ ±20% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS stock no. 163-7513
Mfr. Part No.760308103205
R 96.215
Each (In a Box of 96)
units
11 μH 2.5A Axial 200mΩ ±10% - 34mm 0.89mm 26.5mm 34 x 26.5 x 0.89mm Ferrite 16MHz 5mm WE-WPCC
RS stock no. 736-1217
Mfr. Part No.RLB9012-102KL
BrandBourns
R 8.788
Each (In a Bag of 10)
units
1 mH 510mA Radial 2.9Ω ±10% 9mm - - 12.2mm 9 (Dia.) x 12.2mm Ferrite 1.3MHz 5mm RLB