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. 106-7735
Mfr. Part No.1447423C
HK$18.95
Each (In a Box of 25)
units
470 μH 2.3A Radial 222mΩ ±10% - 27.2mm 25.9mm 15.5mm 27.2 x 25.9 x 15.5mm - 2MHz 23.3mm 1400
RS Stock No. 163-3226
Mfr. Part No.744134
HK$13.325
Each (In a Bag of 100)
units
92 μH 5.4A Lead Wire 50mΩ ±20% 31mm - 13mm - 31 (Dia.) x 13mm Ferrite - 10mm WE-SI
RS Stock No. 749-8344
Mfr. Part No.7447471022
HK$20.69
Each
units
2.2 μH 10A Through Hole 9mΩ ±20% 11mm - - 11.5mm 11 (Dia.) x 11.5mm Ferrite 75MHz 5mm WE-TIS
RS Stock No. 191-0649
Mfr. Part No.B78108S1224J000
BrandEPCOS
HK$3.02
Each (In a Pack of 10)
units
220 μH 250mA Axial 3.3Ω ±5% 4mm 11.5mm - - 4 (Dia.) x 11.5mm Ferrite 3.7MHz - BC
RS Stock No. 465-6174
Mfr. Part No.RD5132-6-5M0
BrandSchaffner
HK$149.67
Each
units
5 mH 6A Lead Wire 38mΩ -30 → +50% 50.5mm - - 35.5mm 50.5 (Dia.) x 35.5mm - - - RD
RS Stock No. 750-0743
Mfr. Part No.ELC18B3R3L
BrandPanasonic
HK$16.854
Each (In a Bag of 5)
units
3.3 μH 8.5A Radial 10mΩ ±20% 18mm - - 27mm 18 (Dia.) x 27mm Ferrite - 7.5mm ELC18B
RS Stock No. 860-4032
Mfr. Part No.5721-RC
BrandBourns
HK$51.663
Each (In a Pack of 240)
units
250 μH 8A Radial 41mΩ ±15% 53.98mm - - 0.94in 2.125 (Dia.) x 0.937in - 1kHz 0.79in 5700
RS Stock No. 874-9839
Mfr. Part No.1130-330K-RC
BrandBourns
HK$45.31
Each
units
33 μH 13.5A Radial 17mΩ ±10% 27.94mm - - 21.3mm 27.94 (Dia.) x 21.34mm Ferrite Bobbin Core - 20.07mm 1130
RS Stock No. 191-1169
Mfr. Part No.B82144A2474J000
BrandEPCOS
HK$4.49
Each (In a Pack of 5)
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$15.261
Each (In a Bag of 200)
units
29 μH 7.8A Lead Wire 15mΩ ±20% 18.5mm - 10.5mm - 18.5 (Dia.) x 10.5mm Composite Iron Powder - 8mm WE-FI
RS Stock No. 489-0059
Mfr. Part No.744772330
HK$7.65
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. 228-444
Mfr. Part No.1447423C
HK$20.95
Each
units
470 μH 2.3A Radial 222mΩ ±10% - 27.2mm 25.9mm 15.5mm 27.2 x 25.9 x 15.5mm - 2MHz 23.3mm 1400
RS Stock No. 617-1322
Mfr. Part No.7447016
HK$16.14
Each
units
29 μH 7.8A Lead Wire 15mΩ ±20% 18.5mm - 10.5mm - 18.5 (Dia.) x 10.5mm Composite Iron Powder - 8mm WE-FI
RS Stock No. 106-7919
Mfr. Part No.15474C
HK$14.243
Each (In a Box of 40)
units
470 μH 1.4A Radial 389mΩ ±10% 16.8mm - - 21.3mm 16.8 (Dia.) x 21.3mm - 1.3MHz 14.2mm 1500
RS Stock No. 899-7069
Mfr. Part No.744750560220
HK$19.43
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. 172-9587
Mfr. Part No.RLB0914-470KL
BrandBourns
HK$1.71
Each (In a Bag of 200)
units
47 μH 1.5A Radial 140mΩ ±10% 8.7mm - - 12mm 8.7 (Dia.) x 12mm Ferrite 6MHz 5mm RLB
RS Stock No. 233-5459
Mfr. Part No.ELC18B222L
BrandPanasonic
HK$14.60
Each
units
2.2 mH 750mA Radial 880mΩ ±10% - 20mm 18mm 27mm 20 x 18 x 27mm Ferrite - 7.5mm ELC18B
RS Stock No. 163-3402
Mfr. Part No.744824622
HK$43.153
Each (In a Box of 25)
units
2.2 mH 6A Radial 20mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 308-8794
Mfr. Part No.7447076
HK$38.85
Each
units
150 μH 6.1A Lead Wire 45mΩ ±20% 27.5mm - 14mm - 27.5 (Dia.) x 14mm Composite Iron Powder - 11.5mm WE-FI
RS Stock No. 489-0201
Mfr. Part No.744822301
HK$36.08
Each
units
1 mH 3A Radial 35mΩ ±30% - 17.5mm 13mm 22mm 17.5 x 13 x 22mm - - 7.7mm WE-CMB
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