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. 122-9205
Mfr. Part No.RL622-4R7K-RC
BrandBourns
TWD23.80
Each (In a Pack of 10)
units
4.7 μH 4.3A Radial 30mΩ ±10% 8.5mm - - 11mm 8.5 (Dia.) x 11mm Ferrite 51MHz 5mm RL622
RS Stock No. 170-5171
Mfr. Part No.RB6132-36-0M4
BrandSchaffner
TWD662.40
Each (In a Box of 32)
units
420 μH 36A Radial 1.4mΩ -30 → +50% - 67.9mm 66.9mm 52mm 67.9 x 66.9 x 52mm - 400Hz 5.08mm RB
RS Stock No. 106-7753
Mfr. Part No.22R334C
TWD18.30
Each (In a Bag of 100)
units
330 μH 380mA Radial 1.21Ω ±10% - 7.7mm - 10.5mm - - 3.7MHz 3mm 2200R
RS Stock No. 308-9551
Mfr. Part No.7447034
TWD76.00
Each
units
43 μH 2.6A Lead Wire 60mΩ ±20% 13mm - 6.5mm - 13 (Dia.) x 6.5mm Composite Iron Powder - 4.5mm WE-FI
RS Stock No. 715-7181
Mfr. Part No.15334C
TWD59.00
Each
units
330 μH 1.7A Radial 263mΩ ±10% 16.8mm - - 21.3mm 16.8 x 21.3mm - 1.6MHz 13.8mm 1500
RS Stock No. 715-6743
Mfr. Part No.22R476C
TWD28.20
Each (In a Pack of 10)
units
47 mH 27mA Radial 169.4Ω ±10% - 7.7mm - 10.5mm - - 250kHz 3mm 2200R
RS Stock No. 104-8418
BrandRS PRO
TWD41.00
Each (In a Pack of 10)
units
47 μH 1A Radial 63mΩ ±15% 14mm - - 8mm 14 (Dia.) x 8mm - - - DP
RS Stock No. 163-7949
Mfr. Part No.744750560100
TWD67.80
Each (In a Tray of 70)
units
10 μH 11.4A Radial 6.8mΩ ±20% 14.8mm - - 15.8mm 14.8 (Dia.) x 15.8mm Ferrite - 12mm WE-FAMI
RS Stock No. 172-8628
Mfr. Part No.RL875-222K-RC
BrandBourns
TWD27.60
Each (In a Bag of 100)
units
2.2 mH 180mA - - ±10% 7.8mm - - 7.5mm 7.8 (Dia.) x 7.5mm Ferrite 1.5MHz 5mm -
RS Stock No. 110-1361
Mfr. Part No.ELC12D822E
BrandPanasonic
TWD19.00
Each (In a Bag of 500)
units
8.2 mH 280mA Radial 6.34Ω ±10% - 14mm 12.5mm 16.5mm 14 x 12.5 x 16.5mm Ferrite - 7.5mm ELC12D
RS Stock No. 163-7937
Mfr. Part No.744750230150
TWD47.50
Each (In a Tray of 150)
units
15 μH 3.7A Radial 35mΩ ±20% 8.8mm - - 11mm 8.8 (Dia.) x 11mm Ferrite - 6.5mm WE-FAMI
RS Stock No. 163-3344
Mfr. Part No.744772221
TWD25.50
Each (In a Tray of 140)
units
220 μH 640mA Radial 380mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 488-9986
Mfr. Part No.744741472
TWD46.10
Each (In a Pack of 10)
units
4.7 mH 150mA Radial 25Ω ±10% 8.5mm - - 6mm 8.5 (Dia.) x 6mm Ferrite - 5mm WE-TI
RS Stock No. 871-1537
Mfr. Part No.B82731M2601A030
BrandEPCOS
TWD105.00
Each (In a Bag of 3)
units
39 mH 600mA Radial 1.5Ω -30 → +50% - 21mm 15mm 20mm 21 x 15 x 20mm Ferrite 10kHz 12.5mm B82731M
RS Stock No. 883-9134
Mfr. Part No.RD6137-16-1M5
BrandSchaffner
TWD525.00
Each (In a Pack of 14)
units
1.5 mH 16A Lead Wire, Through Hole 8.3mΩ -30 → +50% 60mm - - 35mm 60 (Dia.) x 35mm - - - RD
RS Stock No. 163-5546
Mfr. Part No.7448040707
TWD473.40
Each (In a Box of 25)
units
2 x 7 mH 7A Through Hole 2 x 20mΩ -30 → +50% - 28mm 19mm 32mm 28 x 19 x 32mm Nano Crystalline 1 kHz → 300 MHz 10mm WE-CMBNC
RS Stock No. 172-8362
Mfr. Part No.RLB0912-221KL
BrandBourns
TWD7.50
Each (In a Bag of 200)
units
220 μH 440mA Radial - ±10% 8.7mm - - 10mm 8.7 (Dia.) x 10mm Ferrite 4.5MHz 5mm RLB
RS Stock No. 106-7784
Mfr. Part No.1415514C
TWD86.80
Each (In a Box of 25)
units
1.5 mH 1.4A Radial 518mΩ ±10% - 27.1mm 25.9mm 20mm 27.1 x 25.9 x 20mm - 800kHz 23.2mm 1400
RS Stock No. 123-1525
Mfr. Part No.IHTH0750IZEB6R8M5A
BrandVishay
TWD188.00
Each
units
6.8 μH 24.5A Radial 4.18mΩ ±20% 19.17mm - - 8.7mm 19.17 (Dia.) x 8.7mm - 9.5MHz 13.2mm IHTH-0750IZ-5A
RS Stock No. 893-4207
Mfr. Part No.Z14E
BrandOhmite
TWD601.00
Each
units
44 μH 680mA Through Hole 2.6Ω ±10% 11.11mm - - 50.6mm 11.11 (Dia.) x 50.6 Lmm - 23MHz - Z