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. 213-1869
Mfr. Part No.B82111E0000C020
BrandEPCOS
HK$15.73
Each
units
7 μH 6A Axial 20mΩ ±20% 7.5mm 27.4mm - - 7.5 (Dia.) x 27.4mm Ferrite 180MHz - B82111E
RS Stock No. 167-8218
Mfr. Part No.B82111E0000C020
BrandEPCOS
HK$6.29
Each (On a Reel of 1000)
units
7 μH 6A Axial 20mΩ ±20% 7.5mm 27.4mm - - 7.5 (Dia.) x 27.4mm Ferrite 180MHz - B82111E
RS Stock No. 172-9569
Mfr. Part No.RLB0914-331KL
BrandBourns
HK$1.974
Each (In a Bag of 200)
units
330 μH 600mA Radial 760mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 2MHz 5mm RLB
RS Stock No. 811-8780
Mfr. Part No.RLB0914-331KL
BrandBourns
HK$2.772
Each (In a Bag of 10)
units
330 μH 600mA Radial 760mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 2MHz 5mm RLB
RS Stock No. 163-3397
Mfr. Part No.744823601
HK$38.08
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. 432-4401
Mfr. Part No.744772101
HK$9.209
Each (In a Pack of 10)
units
100 μH 900mA Radial 190mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 172-8319
Mfr. Part No.RLB0608-102KL
BrandBourns
HK$1.323
Each (In a Bag of 800)
units
1 mH 100mA Radial - ±10% 5mm - - 6.5mm 5 (Dia.) x 6.5mm Ferrite 1.8MHz 2mm RLB
RS Stock No. 811-8859
Mfr. Part No.RLB0608-102KL
BrandBourns
HK$2.027
Each (In a Bag of 10)
units
1 mH 100mA Radial 11.5Ω ±10% 5mm - - 6.5mm 5 (Dia.) x 6.5mm Ferrite 1.8MHz 2mm RLB
RS Stock No. 489-0267
Mfr. Part No.744823601
HK$50.03
Each
units
1 mH 6A Radial 13mΩ ±30% - 25mm 17mm 26.5mm 25 x 17 x 26.5mm - - 10.7mm WE-CMB
RS Stock No. 163-3340
Mfr. Part No.744772101
HK$7.361
Each (In a Tray of 140)
units
100 μH 900mA Radial 190mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 715-6787
Mfr. Part No.1430450C
HK$36.30
Each
units
300 μH 5A Radial 80mΩ ±10% - 33.3mm 31.3mm 23.3mm 33.3 x 31.3 x 23.3mm - 1.7MHz 29mm 1400
RS Stock No. 170-5030
Mfr. Part No.RN222-4-02-3M3
BrandSchaffner
HK$13.115
Each (In a Box of 300)
units
3.3 mH 4A Radial 45mΩ -30 → +50% - 31.3mm 18.3mm 29.6mm 31.3 x 18.3 x 29.6mm - - 12.5mm RN
RS Stock No. 736-0974
Mfr. Part No.2309-V-RC
BrandBourns
HK$34.20
Each
units
47 μH 10.7A Radial 16mΩ ±15% 32.51mm - 0.65in - 32.512 (Dia.) x 16.51mm - - 13.462mm 2300
RS Stock No. 124-1522
Mfr. Part No.7447071
HK$36.56
Each (In a Pack of 2)
units
470 μH 3A Through Hole 110mΩ ±20% 25mm - - 12mm 25 (Dia.) x 12mm Ferrite, Iron Powder - 11mm WE-FI
RS Stock No. 124-1528
Mfr. Part No.7447070
HK$29.558
Each (In a Pack of 5)
units
100 μH 6A Through Hole 35mΩ ±20% 25mm - - 11mm 25 (Dia.) x 11mm Ferrite, Iron Powder - 8mm WE-FI
RS Stock No. 191-1175
Mfr. Part No.B82144A2105J000
BrandEPCOS
HK$6.154
Each (In a Pack of 5)
units
1 mH 200mA Axial 3.8Ω ±5% 5.2mm 14.8mm - - 5.2 (Dia.) x 14.8mm Ferrite 1.2MHz - LBC
RS Stock No. 228-573
Mfr. Part No.1410604C
HK$22.38
Each
units
10 mH 400mA Radial 4.34Ω ±10% - 26.6mm 25.9mm 15.5mm 26.6 x 25.9 x 15.5mm - 400kHz 22.9mm 1400
RS Stock No. 219-3429
Mfr. Part No.RN222-4-02-3M3
BrandSchaffner
HK$23.72
Each
units
3.3 mH 4A Radial 45mΩ -30 → +50% - 31.3mm 18.3mm 29.6mm 31.3 x 18.3 x 29.6mm - - 12.5mm RN
RS Stock No. 489-0318
Mfr. Part No.744824101
HK$47.47
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. 106-7738
Mfr. Part No.1410604C
HK$21.924
Each (In a Box of 25)
units
10 mH 400mA Radial 4.34Ω ±10% - 26.6mm 25.9mm 15.5mm 26.6 x 25.9 x 15.5mm - 400kHz 22.9mm 1400