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. 724-7098
Mfr. Part No.822LY-3R3M
BrandToko
TWD21
Each (In a Pack of 5)
units
3.3 μH 2.66A Radial 25mΩ ±20% 8.5mm - - 11mm 8.5 (Dia.) x 11mm - 79MHz 5mm 8RBH2
RS Stock No. 811-8825
Mfr. Part No.RLB0912-102KL
BrandBourns
TWD9
Each (In a Bag of 10)
units
1 mH 200mA Radial 4.3Ω ±10% 8.7mm - - 10mm 8.7 (Dia.) x 10mm Ferrite 1.9MHz 5mm RLB
RS Stock No. 172-7064
Mfr. Part No.RLB0912-102KL
BrandBourns
TWD10
Each (In a Bag of 200)
units
1 mH 200mA Radial - ±10% 8.7mm - - 10mm 8.7 (Dia.) x 10mm Ferrite 1.9MHz 5mm RLB
RS Stock No. 163-3299
Mfr. Part No.7447076
TWD213
Each (In a Box of 30)
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. 163-3385
Mfr. Part No.744821150
TWD116
Each (In a Box of 300)
units
5 mH 1A Radial 200mΩ ±30% - 15mm 7.5mm 18mm 15 x 7.5 x 18mm - - 10mm WE-CMB HC
RS Stock No. 489-0166
Mfr. Part No.744821150
TWD133
Each
units
5 mH 1A Radial 200mΩ ±30% - 15mm 7.5mm 18mm 15 x 7.5 x 18mm - - 10mm WE-CMB HC
RS Stock No. 308-8794
Mfr. Part No.7447076
TWD166
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. 742-7957
Mfr. Part No.PE-52626NL
BrandPulse
TWD82
Each (In a Bag of 5)
units
220 μH 1.5A Radial 420mΩ ±20% - 18.03mm 18.03mm 11.68mm 18.03 x 18.03 x 11.68mm - - 10.16 mm, 15.24 mm -
RS Stock No. 489-0425
Mfr. Part No.744825320
TWD203
Each
units
20 mH 3A Radial 160mΩ ±30% - 30.5mm 19mm 35mm 30.5 x 19 x 35mm - - 25mm WE-CMB HC
RS Stock No. 489-0318
Mfr. Part No.744824101
TWD157
Each
units
1 mH 10A Radial 7mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 167-0312
Mfr. Part No.B82721K2202N001
BrandEPCOS
TWD79
Each (In a Box of 720)
units
1 mH 2A Radial 80mΩ ±30% - 18.2mm 13.2mm 20.3mm 18.2 x 13.2 x 20.3mm Ferrite - 10 mm, 15 mm B82721A
RS Stock No. 170-5175
Mfr. Part No.RB6532-50-0M2
BrandSchaffner
TWD967
Each (In a Box of 32)
units
180 μH 50A Radial 800µΩ -30 → +50% - 62mm 58mm 70mm 62 x 58 x 70mm - 400Hz 5.08mm RB
RS Stock No. 163-3399
Mfr. Part No.744824220
TWD190
Each (In a Box of 25)
units
20 mH 2A Radial 220mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 163-3404
Mfr. Part No.744825320
TWD213
Each (In a Tray of 20)
units
20 mH 3A Radial 160mΩ ±30% - 30.5mm 19mm 35mm 30.5 x 19 x 35mm - - 25mm WE-CMB HC
RS Stock No. 772-0133
Mfr. Part No.B82721K2202N001
BrandEPCOS
TWD96
Each
units
1 mH 2A Radial 80mΩ ±30% - 18.2mm 13.2mm 20.3mm 18.2 x 13.2 x 20.3mm Ferrite - 10 mm, 15 mm B82721A
RS Stock No. 163-3398
Mfr. Part No.744824101
TWD190
Each (In a Box of 25)
units
1 mH 10A Radial 7mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 871-1363
Mfr. Part No.B82726S2163N030
BrandEPCOS
TWD404
Each
units
2.2 mH 16A Radial 7.1mΩ ±30% - 50mm 23mm 49mm 50 x 23 x 49mm Ferrite 10kHz 18mm B82726S
RS Stock No. 167-0422
Mfr. Part No.B82726S2163N030
BrandEPCOS
TWD415
Each (In a Box of 156)
units
2.2 mH 16A Radial 7.1mΩ ±30% - 50mm 23mm 49mm 50 x 23 x 49mm Ferrite 10kHz 18mm B82726S
RS Stock No. 489-0352
Mfr. Part No.744824220
TWD164
Each
units
20 mH 2A Radial 220mΩ ±30% - 27.5mm 18.5mm 33mm 27.5 x 18.5 x 33mm - - 10mm WE-CMB
RS Stock No. 173-2177
Mfr. Part No.PE-52626NL
BrandPulse
TWD131
Each (On a Reel of 25)
units
220 μH 1.5A Radial 420mΩ ±20% - 18.03mm 18.03mm 11.68mm 18.03 x 18.03 x 11.68mm - - 10.16 mm, 15.24 mm -