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. 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. 191-0425
Mfr. Part No.B78108S1222K000
BrandEPCOS
HK$3.441
Each (In a Pack of 10)
units
2.2 μH 1A Axial 250mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 140MHz - BC
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. 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. 172-9914
Mfr. Part No.2309-H-RC
BrandBourns
HK$27.226
Each (In a Bag of 36)
units
47 μH 10.7A Radial 16mΩ ±15% 32.51mm - - 0.65in 32.512 (Dia.) x 16.51mm - - 28.956mm 2300
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. 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
RS Stock No. 172-7238
Mfr. Part No.5800-100-RC
BrandBourns
HK$5.902
Each (In a Bag of 864)
units
10 μH 1.3A Axial - ±10% 7mm 17.8mm - - 7 x 17.8mm Ferrite - - 5800
RS Stock No. 308-8845
Mfr. Part No.7447033
HK$16.26
Each
units
68 μH 2.8A Lead Wire 55mΩ ±20% 14mm - 8mm - 14 (Dia.) x 8mm Composite Iron Powder - 6mm WE-FI
RS Stock No. 715-6753
Mfr. Part No.1447383C
HK$27.90
Each
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. 163-3405
Mfr. Part No.744825510
HK$51.839
Each (In a Tray of 20)
units
10 mH 5A Radial 55mΩ ±30% - 30.5mm 21mm 35mm 30.5 x 21 x 35mm - - 25mm WE-CMB HC
RS Stock No. 110-1296
Mfr. Part No.ELC08D100E
BrandPanasonic
HK$3.206
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. 228-416
Mfr. Part No.1410454C
HK$26.39
Each
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. 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. 162-1136
Mfr. Part No.ELC11D391F
BrandPanasonic
HK$3.799
Each (In a Bag of 500)
units
390 μH 950mA Radial 400mΩ ±10% 11.5mm - - 13.9mm 11.5 (Dia.) x 13.9mm Ferrite - 5mm ELC11D
RS Stock No. 233-5134
Mfr. Part No.ELC08D100E
BrandPanasonic
HK$8.31
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. 163-4142
Mfr. Part No.7447471022
HK$17.43
Each (In a Tray of 110)
units
2.2 μH 10A Through Hole 9mΩ ±20% 11mm - - 11.5mm 11 (Dia.) x 11.5mm Ferrite 75MHz 5mm WE-TIS
RS Stock No. 736-1204
Mfr. Part No.RLB0914-470KL
BrandBourns
HK$2.772
Each (In a Bag of 10)
units
47 μH 1.5A Radial 140mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 6MHz 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