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. 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
RS Stock No. 106-7781
Mfr. Part No.1430450C
HK$35.847
Each (In a Box of 15)
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. 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. 228-163
BrandRS PRO
HK$24.23
Each
units
47 μH 760mA Axial - - 3.3mm 9.14mm - - 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
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. 167-8360
Mfr. Part No.B78108S1104J000
BrandEPCOS
HK$1.168
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. 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. 871-1519
Mfr. Part No.B82731M2132A030
BrandEPCOS
HK$27.133
Each (In a Bag of 3)
units
6.8 mH 1.3A Radial 280mΩ -30 → +50% - 21mm 15mm 20mm 21 x 15 x 20mm Ferrite 10kHz 12.5mm B82731M
RS Stock No. 736-0958
Mfr. Part No.2301-V-RC
BrandBourns
HK$34.06
Each
units
10 μH 20A Radial 5mΩ ±15% 32.51mm - 0.65in - 32.512 (Dia.) x 16.51mm - - 14.224mm 2300
RS Stock No. 191-0560
Mfr. Part No.B78108S1473J000
BrandEPCOS
HK$3.224
Each (In a Pack of 10)
units
47 μH 450mA Axial 1.1Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 7.5MHz - BC
RS Stock No. 736-1015
Mfr. Part No.5800-100-RC
BrandBourns
HK$12.222
Each (In a Bag of 5)
units
10 μH 1.3A Axial 33mΩ ±10% 7mm 17.8mm - - 7 x 17.8mm Ferrite - - 5800
RS Stock No. 167-8357
Mfr. Part No.B78108S1473J000
BrandEPCOS
HK$1.168
Each (On a Reel of 5000)
units
47 μH 450mA Axial 1.1Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 7.5MHz - BC
RS Stock No. 106-7732
Mfr. Part No.1410454C
HK$21.924
Each (In a Box of 25)
units
100 μH 5.4A Radial 42mΩ ±10% - 26.4mm 24.4mm 14mm 26.4 x 24.4 x 14mm - 4.6MHz 23.6mm 1400
RS Stock No. 288-143
Mfr. Part No.CMV40
HK$48.07
Each
units
2.4 mH 4A Radial 40mΩ - - 34mm 17.4mm 31mm 34 x 17.4 x 31mm Ferrite - 7.62 mm, 10.16 mm, 25.4 mm CMV
RS Stock No. 167-0381
Mfr. Part No.B82731M2132A030
BrandEPCOS
HK$14.469
Each (In a Box of 800)
units
6.8 mH 1.3A Radial 280mΩ -30 → +50% - 21mm 15mm 20mm 21 x 15 x 20mm Ferrite 10kHz 12.5mm B82731M
RS Stock No. 124-1527
Mfr. Part No.7447021
HK$16.956
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. 228-135
BrandRS PRO
HK$13.10
Each
units
4.7 μH 1.7A Axial - ±10% 3.3mm 9.14mm - - 3.3 (Dia.) x 9.14mm Ferrite 95MHz - APIE0309
RS Stock No. 106-7771
Mfr. Part No.1447383C
HK$23.006
Each (In a Box of 25)
units
47 μH 8.3A Radial 19mΩ ±10% - 28.5mm 25.9mm 20mm 28.5 x 25.9 x 20mm - 6MHz 23.9mm 1400
RS Stock No. 162-0202
Mfr. Part No.B78108S1222K000
BrandEPCOS
HK$1.111
Each (On a Reel of 5000)
units
2.2 μH 1A Axial 250mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 140MHz - BC
RS Stock No. 124-1530
Mfr. Part No.7447060
HK$29.646
Each (In a Pack of 5)
units
300 μH 2.5A Through Hole 150mΩ ±20% 21mm - - 11mm 21 (Dia.) x 11mm Ferrite, Iron Powder - 9mm WE-FI