Leaded Inductors

Leaded inductors are components with through hole features and leads attached concentrically to the opposite ends of the inductor cores. They 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.

What are leaded inductors used for?

They are used to suppress asymmetrical interferences in low-voltage and high-voltage circuits.

With low voltages, they act as continuous circuits to keep the current flowing if there are interferences. With high voltages, they are able to prevent current from flowing due to their high resistance, thus are used to protect the circuit from voltage spikes.

Types of leaded inductors

Leaded inductors come in two main categories:

  • 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. 308-8845
Mfr. Part No.7447033
HK$15.23
Each
units
68 μH 2.8A Lead Wire 55mΩ ±20% 14mm - 8mm - 14 (Dia.) x 8mm Composite Iron Powder - 6mm WE-FI
RS Stock No. 162-1136
Mfr. Part No.ELC11D391F
BrandPanasonic
HK$2.709
Each (In a Bag of 500)
units
390 μH 950mA Radial 400mΩ ±10% 11.5mm - - 13.9mm 11.5 (Dia.) x 13.9mm Ferrite - 5mm ELC11D
RS Stock No. 228-135
BrandRS PRO
HK$11.47
Each
units
4.7 μH 1.7A Axial - ±10% 3.3mm 9.14mm - - 3.3 (Dia.) x 9.14mm Ferrite 95MHz - APIE0309
RS Stock No. 871-1519
Mfr. Part No.B82731M2132A030
BrandEPCOS
HK$17.20
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. 540-8500
Mfr. Part No.ELC09D100F
BrandPanasonic
HK$4.168
Each (In a Pack of 5)
units
10 μH 2.5A Radial 27mΩ ±20% 9.5mm - - 8.9mm 9.5 (Dia.) x 8.9mm Ferrite - 5mm ELC09D
RS Stock No. 675-5422
Mfr. Part No.ELC11D391F
BrandPanasonic
HK$7.648
Each (In a Pack of 5)
units
390 μH 950mA Radial 400mΩ ±10% 11.5mm - - 13.9mm 11.5 (Dia.) x 13.9mm Ferrite - 5mm ELC11D
RS Stock No. 191-0560
Mfr. Part No.B78108S1473J000
BrandEPCOS
HK$2.529
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. 736-0970
Mfr. Part No.2309-H-RC
BrandBourns
HK$27.30
Each
units
47 μH 10.7A Radial 16mΩ ±15% 32.51mm - - 0.65in 32.512 (Dia.) x 16.51mm - - 28.956mm 2300
RS Stock No. 106-7771
Mfr. Part No.1447383C
HK$20.64
Each (In a Box of 25)
units
47 μH 8.3A Radial 19mΩ ±10% - 28.5mm 25.9mm 20mm 28.5 x 25.9 x 20mm - 6MHz 23.9mm 1400
RS Stock No. 489-0419
Mfr. Part No.744825510
HK$49.15
Each
units
10 mH 5A Radial 55mΩ ±30% - 30.5mm 21mm 35mm 30.5 x 21 x 35mm - - 25mm WE-CMB HC
RS Stock No. 163-3296
Mfr. Part No.7447033
HK$19.607
Each (In a Bag of 300)
units
68 μH 2.8A Lead Wire 55mΩ ±20% 14mm - 8mm - 14 (Dia.) x 8mm Composite Iron Powder - 6mm WE-FI
RS Stock No. 106-7732
Mfr. Part No.1410454C
HK$20.53
Each (In a Box of 25)
units
100 μH 5.4A Radial 42mΩ ±10% - 26.4mm 24.4mm 14mm 26.4 x 24.4 x 14mm - 4.6MHz 23.6mm 1400
RS Stock No. 191-0510
Mfr. Part No.B78108S1183K000
BrandEPCOS
HK$3.043
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. 110-1296
Mfr. Part No.ELC08D100E
BrandPanasonic
HK$2.414
Each (In a Bag of 1000)
units
10 μH 2.8A Radial 22mΩ ±20% - 10mm 8.5mm 13mm 10 x 8.5 x 13mm Ferrite - 5mm ELC08D
RS Stock No. 228-416
Mfr. Part No.1410454C
HK$20.95
Each
units
100 μH 5.4A Radial 42mΩ ±10% - 26.4mm 24.4mm 14mm 26.4 x 24.4 x 14mm - 4.6MHz 23.6mm 1400
RS Stock No. 124-1530
Mfr. Part No.7447060
HK$18.93
Each (In a Pack of 5)
units
300 μH 2.5A Through Hole 150mΩ ±20% 21mm - - 11mm 21 (Dia.) x 11mm Ferrite, Iron Powder - 9mm WE-FI
RS Stock No. 736-1015
Mfr. Part No.5800-100-RC
BrandBourns
HK$7.948
Each (In a Bag of 5)
units
10 μH 1.28A Axial 33mΩ ±10% 6.985mm 17.78mm - - 6.985 (Dia.) x 17.78mm Ferrite - - 5800
RS Stock No. 163-3405
Mfr. Part No.744825510
HK$48.552
Each (In a Tray of 20)
units
10 mH 5A Radial 55mΩ ±30% - 30.5mm 21mm 35mm 30.5 x 21 x 35mm - - 25mm WE-CMB HC
RS Stock No. 233-5134
Mfr. Part No.ELC08D100E
BrandPanasonic
HK$5.388
Each (In a Pack of 5)
units
10 μH 2.8A Radial 22mΩ ±20% - 10mm 8.5mm 13mm 10 x 8.5 x 13mm Ferrite - 5mm ELC08D
RS Stock No. 172-9914
Mfr. Part No.2309-H-RC
BrandBourns
HK$22.76
Each (In a Bag of 36)
units
47 μH 10.7A Radial 16mΩ ±15% 32.51mm - - 0.65in 32.512 (Dia.) x 16.51mm - - 28.956mm 2300