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. 870-3319
Mfr. Part No.DENO-25-0001
BrandSchurter
SGD5.954
Each (In a Pack of 50)
units
4 mH 16A Radial 27mΩ - 25mm 18mm - - 25 x 18mm - 300kHz - DENO
RS Stock No. 870-3394
Mfr. Part No.DKFP-6248-D504
BrandSchurter
SGD4.33
Each (In a Pack of 176)
units
4 mH 500mA Radial 500mΩ -30 → +50% - 10.7mm 10.5mm 8.2mm 10.7 x 10.5 x 8.2mm - 1.2MHz 6.25, 8.75mm DKFP
RS Stock No. 717-3489
Mfr. Part No.DFKH-14-0001
BrandSchurter
SGD5.06
Each
units
11 mH 600mA Radial 600mΩ -30 → +50% - 15mm 10.5mm 13.5mm 15 x 10.5 x 13.5mm - 500kHz 7.5 mm, 12.5 mm DFKH
RS Stock No. 870-3306
Mfr. Part No.DEHL-10-0001
BrandSchurter
SGD8.94
Each
units
20 μH 16A Axial 15mΩ ±15% 12mm 58mm - - 12 x 58mm - 30MHz - DEH
RS Stock No. 870-3390
Mfr. Part No.DKFP-6248-02D5
BrandSchurter
SGD4.33
Each (In a Pack of 176)
units
500 μH 2A Radial 50mΩ -30 → +50% - 10.7mm 10.5mm 8.2mm 10.7 x 10.5 x 8.2mm - 4.5MHz 6.25, 8.75mm DKFP
RS Stock No. 870-3397
Mfr. Part No.DKFP-6248-0102
BrandSchurter
SGD4.33
Each (In a Pack of 176)
units
2 mH 900mA Radial 240mΩ -30 → +50% - 10.7mm 10.5mm 8.2mm 10.7 x 10.5 x 8.2mm - 1.6MHz 6.25, 8.75mm DKFP
RS Stock No. 717-3521
Mfr. Part No.DFKH-31-0005
BrandSchurter
SGD8.17
Each
units
6.8 mH 2A Radial 150mΩ -30 → +50% - 31.5mm 18.5mm 33mm 31.5 x 18.5 x 33mm - 500kHz 12.5 mm, 15 mm DFKH
RS Stock No. 717-3552
Mfr. Part No.DFSG-33-0002
BrandSchurter
SGD16.19
Each
units
- 10A Radial 30mΩ - - 33mm 33mm 25.5mm 33 x 33 x 25.5mm Iron - 15 mm, 17.5 mm DFSG
RS Stock No. 717-3483
Mfr. Part No.DFKH-14-0002
BrandSchurter
SGD5.06
Each
units
4 mH 1A Radial 250mΩ -30 → +50% - 15mm 10.5mm 13.5mm 15 x 10.5 x 13.5mm - 1.2MHz 7.5 mm, 12.5 mm DFKH