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. 489-0059
Mfr. Part No.744772330
HK$8.53
Each (In a Pack of 10)
units
33 μH 2A Radial 60mΩ ±10% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 122-3298
Mfr. Part No.SMV60
HK$48.49
Each
units
120 μH 6A Radial 40mΩ - - 32mm 17mm 30mm 32 x 17 x 30mm Ferrite - 7.62 mm, 10.16 mm, 25.4mm SMV
RS Stock No. 163-4142
Mfr. Part No.7447471022
HK$18.06
Each (In a Tray of 110)
units
2.2 μH 10A Through Hole 8.8mΩ ±20% 11mm - - 11.5mm 11 (Dia.) x 11.5mm Ferrite 75MHz 5mm WE-TIS
RS Stock No. 432-4388
Mfr. Part No.744772100
HK$8.578
Each (In a Pack of 10)
units
10 μH 2.6A Radial 40mΩ ±20% 8.3mm - - 10mm 8.3 (Dia.) x 10mm Ferrite - 5mm WE-TI
RS Stock No. 163-3298
Mfr. Part No.7447075
HK$45.37
Each (In a Bag of 45)
units
860 μH 3A Lead Wire 150mΩ ±20% 28.5mm - 15mm 15mm 28.5 (Dia.) x 15mm Iron Powder - 14mm WE-FI
RS Stock No. 110-1762
Mfr. Part No.ELC16B680L
BrandPanasonic
HK$5.813
Each (In a Bag of 500)
units
68 μH 3.2A Radial 57mΩ ±10% 13mm 16mm - 23mm 13 (Dia.) x 23mm Ferrite - 7.5mm ELC16B
RS Stock No. 163-3389
Mfr. Part No.744822222
HK$30.261
Each (In a Box of 140)
units
2.2 mH 2A Radial 70mΩ ±30% - 17.5mm 13mm 22mm 17.5 x 13 x 22mm - - 7.7mm WE-CMB
RS Stock No. 899-7069
Mfr. Part No.744750560220
HK$21.47
Each
units
22 μH 7.7A Radial 14.5mΩ ±20% 14.8mm - - 15.8mm 14.8 (Dia.) x 15.8mm Ferrite - 12mm WE-FAMI
RS Stock No. 163-3299
Mfr. Part No.7447076
HK$46.045
Each (In a Box of 30)
units
150 μH 6.1A Lead Wire 45mΩ ±20% 27.5mm - 13mm 13mm 27.5 (Dia.) x 13mm Iron Powder - 11.5mm WE-FI
RS Stock No. 617-1394
Mfr. Part No.744151
HK$25.74
Each
units
48 μH 8.1A Lead Wire 25mΩ ±20% 30mm - 12mm - 30 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 617-1388
Mfr. Part No.744152
HK$41.03
Each
units
82 μH 7.7A Lead Wire 30mΩ ±20% 28mm - 12mm - 28 (Dia.) x 12mm Ferrite - 10mm WE-SI
RS Stock No. 173-0031
BrandRS PRO
HK$7.501
Each (In a Box of 300)
units
47 μH 3A Radial 48mΩ ±15% 20mm - - 8mm 20 (Dia.) x 8mm - - - DP
RS Stock No. 465-6174
Mfr. Part No.RD5132-6-5M0
BrandSchaffner
HK$126.30
Each
units
5 mH 6A Lead Wire 38mΩ -30 → +50% 50.5mm - - 35.5mm 50.5 (Dia.) x 35.5mm - - - RD
RS Stock No. 163-7918
Mfr. Part No.7447211471
HK$13.76
Each (In a Tray of 80)
units
470 μH 1A Radial 530mΩ ±10% 11mm 11mm 11mm 15mm 11 (Dia.) x 15mm Ferrite 1.6MHz 4 x 5mm WE-TIF
RS Stock No. 162-0212
Mfr. Part No.B82144A2474J000
BrandEPCOS
HK$2.147
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. 163-3722
Mfr. Part No.7447016
HK$17.853
Each (In a Bag of 200)
units
29 μH 7.8A Lead Wire 15mΩ ±20% 19mm - 10.5mm 10.5mm 19 (Dia.) x 10.5mm Iron Powder - 8mm WE-FI
RS Stock No. 228-444
Mfr. Part No.1447423C
HK$26.08
Each
units
470 μH 2.3A Radial 250mΩ ±10% 25.7mm 24mm 24.4mm 14mm 25.7 x 24.4 x 14mm - 2MHz 23.3mm 1400
RS Stock No. 104-8448
BrandRS PRO
HK$45.855
Each (In a Pack of 2)
units
100 μH 10A Radial 0.044mΩ ±15% 50mm - - 21mm 50 (Dia.) x 21mm - - - DP
RS Stock No. 811-8786
Mfr. Part No.RLB0914-101KL
BrandBourns
HK$3.037
Each (In a Bag of 10)
units
100 μH 1A Radial 280mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 3.5MHz 5mm RLB
RS Stock No. 308-8744
Mfr. Part No.7447075
HK$48.15
Each
units
860 μH 3A Lead Wire 150mΩ ±20% 28.5mm - 16mm - 28.5 (Dia.) x 16mm Composite Iron Powder - 14mm WE-FI