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. 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. 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. 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. 191-0598
Mfr. Part No.B78108S1104J000
BrandEPCOS
HK$2.572
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. 167-8257
Mfr. Part No.B82144A2105J000
BrandEPCOS
HK$2.406
Each (On a Reel of 1500)
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. 871-1519
Mfr. Part No.B82731M2132A030
BrandEPCOS
HK$26.617
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. 167-8353
Mfr. Part No.B78108S1183K000
BrandEPCOS
HK$1.111
Each (On a Reel of 5000)
units
18 μH 580mA Axial 670mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 17MHz - BC
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. 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. 191-0510
Mfr. Part No.B78108S1183K000
BrandEPCOS
HK$2.698
Each (In a Pack of 10)
units
18 μH 580mA Axial 670mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 17MHz - BC
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. 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. 162-0202
Mfr. Part No.B78108S1222K000
BrandEPCOS
HK$1.079
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. 162-0212
Mfr. Part No.B82144A2474J000
BrandEPCOS
HK$2.086
Each (On a Reel of 1500)
units
470 μH 280mA Axial 2.5Ω ±5% 5.2mm 14.8mm - - 5.2 (Dia.) x 14.8mm Ferrite 1.5MHz - LBC
RS Stock No. 167-8364
Mfr. Part No.B78108S1334J000
BrandEPCOS
HK$1.135
Each (On a Reel of 5000)
units
330 μH 190mA Axial 6.4Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 2.7MHz - BC
RS Stock No. 191-1169
Mfr. Part No.B82144A2474J000
BrandEPCOS
HK$5.86
Each (In a Pack of 5)
units
470 μH 280mA Axial 2.5Ω ±5% 5.2mm 14.8mm - - 5.2 (Dia.) x 14.8mm Ferrite 1.5MHz - LBC
RS Stock No. 167-8348
Mfr. Part No.B78108S1332K000
BrandEPCOS
HK$1.079
Each (On a Reel of 5000)
units
3.3 μH 900mA Axial 290mΩ ±10% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 115MHz - BC
RS Stock No. 191-0655
Mfr. Part No.B78108S1334J000
BrandEPCOS
HK$3.675
Each (In a Pack of 10)
units
330 μH 190mA Axial 6.4Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 2.7MHz - BC
RS Stock No. 167-8363
Mfr. Part No.B78108S1224J000
BrandEPCOS
HK$1.479
Each (On a Reel of 5000)
units
220 μH 250mA Axial 3.3Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 3.7MHz - BC