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. 228-141
BrandRS PRO
£1.94
Each
Units
10 μH 1.5A Axial 95mΩ - 3.3mm 67.54mm - 9.14mm 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS Stock No. 228-135
BrandRS PRO
£1.13
Each
Units
4.7 μH 1.7A Axial 68mΩ ±10% 3.3mm 9.14mm - 9.14mm 3.3 (Dia.) x 9.14mm Ferrite 95MHz - APIE0309
RS Stock No. 104-8448
BrandRS PRO
£3.975
Each (In a Pack of 2)
Units
100 μH 10A Radial 0.044mΩ ±15% 50mm - - 21mm 50 (Dia.) x 21mm - - - DP
RS Stock No. 173-0065
BrandRS PRO
£3.666
Each (In a Box of 36)
Units
100 μH 1A Radial 44mΩ ±15% 50mm - - 21mm 50 (Dia.) x 21mm - - - DP
RS Stock No. 228-179
BrandRS PRO
£2.10
Each
Units
100 μH 550mA Axial 670mΩ - 3.3mm 67.54mm - 9.14mm 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS Stock No. 228-163
BrandRS PRO
£2.21
Each
Units
47 μH 760mA Axial 350mΩ - 3.3mm 67.54mm - 9.14mm 3.3 (Dia.) x 9.14mm Ferrite - - APIE0309
RS Stock No. 173-0039
BrandRS PRO
£0.754
Each (In a Box of 160)
Units
68 μH 5A Radial 55mΩ ±15% 26mm - - 12mm 26 (Dia.) x 12mm - - - DP
RS Stock No. 104-8440
BrandRS PRO
£0.88
Each (In a Pack of 5)
Units
68 μH 5A Radial 0.055mΩ ±15% 26mm - - 12mm 26 (Dia.) x 12mm - - - DP
RS Stock No. 228-157
BrandRS PRO
£0.58
Each
Units
22 μH 430mA Axial 1.1Ω ±10% 5.2mm 81.3mm - 11.3mm 5.2 (Dia.) x 11.3mm Ferrite - - APIE0309
RS Stock No. 104-8433
BrandRS PRO
£1.29
Each (In a Pack of 5)
Units
1 mH 1A Radial 0.426mΩ ±15% 26mm - - 13mm 26 (Dia.) x 13mm - - - DP
RS Stock No. 173-0046
BrandRS PRO
£1.176
Each (In a Box of 160)
Units
1 mH 1A Radial 426mΩ ±15% 26mm - - 13mm 26 (Dia.) x 13mm - - - DP
RS Stock No. 104-8445
BrandRS PRO
£1.842
Each (In a Pack of 5)
Units
470 μH 3A Radial 0.187mΩ ±15% 42mm - - 12mm 42 (Dia.) x 12mm - - - DP
RS Stock No. 173-0054
BrandRS PRO
£1.785
Each (In a Box of 60)
Units
470 μH 3A Radial 187mΩ ±15% 42mm - - 12mm 42 (Dia.) x 12mm - - - DP
RS Stock No. 173-0030
BrandRS PRO
£0.613
Each (In a Box of 300)
Units
33 μH 3A Radial 38mΩ ±15% 19mm - - 8mm 19 (Dia.) x 8mm - - - DP
RS Stock No. 104-8431
BrandRS PRO
£0.696
Each (In a Pack of 5)
Units
47 μH 3A Radial 0.048mΩ ±15% 20mm - - 8mm 20 (Dia.) x 8mm - - - DP
RS Stock No. 173-0031
BrandRS PRO
£0.637
Each (In a Box of 300)
Units
47 μH 3A Radial 48mΩ ±15% 20mm - - 8mm 20 (Dia.) x 8mm - - - DP
RS Stock No. 104-8430
BrandRS PRO
£0.695
Each (In a Pack of 10)
Units
33 μH 3A Radial 0.038mΩ ±15% 19mm - - 8mm 19 (Dia.) x 8mm - - - DP
RS Stock No. 104-8444
BrandRS PRO
£1.042
Each (In a Pack of 5)
Units
47 μH 7.5A Radial 0.026mΩ ±15% 31mm - - 14mm 31 (Dia.) x 14mm - - - DP
RS Stock No. 173-0226
BrandRS PRO
£0.382
Each (In a Box of 480)
Units
47 μH 1A Radial 63mΩ ±15% 14mm - - 8mm 14 (Dia.) x 8mm - - - DP
RS Stock No. 104-8418
BrandRS PRO
£0.391
Each (In a Pack of 10)
Units
47 μH 1A Radial 0.063mΩ ±15% 14mm - - 8mm 14 (Dia.) x 8mm - - - DP