Wire-Wound Surface Mount Inductors

Wire wound surface mount inductors are passive circuit components, meaning they require an external power source. They have a core made of a magnetic metal like iron with wire wound around it. Energy is stored in a magnetic field when an electrical current flows through the coiled wire which has thick insulation to make the inductors suitable for use with larger currents.


What are wire wound surface mount inductors used for?

They are typically found in car audio and electronic control units (ECUs) because they can block or filter radio frequencies. Unwanted radio frequencies can interfere with audio sound quality and disrupt electrical circuits. These inductors are also used in electronic equipment used in communication infrastructures and mobile base stations.

This ability to minimise interference makes them ideal for use with DC/DC converters in power distribution systems too.

Types of wire wound surface mount inductors

Some inductors have added magnetic shielding which blocks unwanted magnetism that can interfere with the circuit. Some wire wound inductors are wound with special techniques that enhance performance and reduce the unit size to save space in circuit boards.


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Description Price Inductance Maximum DC Current Package/Case Length Automotive Standard Depth Height Diameter Dimensions Shielded Tolerance Maximum DC Resistance Series Core Material
RS Stock No. 741-8922
BrandRS PRO
$1.04
Each (In a Bag of 5)
units
1 mH 400mA 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 1.53Ω - -
RS Stock No. 169-3762
BrandRS PRO
$0.929
Each (On a Reel of 600)
units
1 mH 400mA 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 1.53Ω - -
RS Stock No. 741-9044
BrandRS PRO
$0.562
Each (In a Bag of 5)
units
2.2 μH 2.04A 43 4.8mm - 4.8mm 3mm - 4.8 x 4.8 x 3mm Yes ±20% 31mΩ NPIS43D -
RS Stock No. 169-3766
BrandRS PRO
$0.651
Each (On a Reel of 400)
units
47 μH 2.5A 27 12.5mm - 12.5mm 8mm - 12.5 x 12.5 x 8mm Yes ±20% 100mΩ - -
RS Stock No. 169-3777
BrandRS PRO
$0.506
Each (On a Reel of 2500)
units
2.2 μH 2.04A 43 4.8mm - 4.8mm 3mm - 4.8 x 4.8 x 3mm Yes ±20% 31mΩ NPIS43D -
RS Stock No. 741-8972
BrandRS PRO
$0.728
Each (In a Bag of 5)
units
47 μH 2.5A 27 12.5mm - 12.5mm 8mm - 12.5 x 12.5 x 8mm Yes ±20% 100mΩ - -
RS Stock No. 740-9353
BrandRS PRO
$0.998
Each (In a Bag of 10)
units
1 mH 300mA 31 12.8mm - 9.3mm 5mm - 12.8 x 9.3 x 5mm No ±20% - -
RS Stock No. 124-5577
BrandRS PRO
$0.702
Each (In a Pack of 20)
units
±680 μH 400mA 31 12.8mm - 9.3mm 5mm - 12.8 x 9.3 x 5mm - - 2.02Ω - -
RS Stock No. 169-3448
BrandRS PRO
$2.074
Each (On a Reel of 250)
units
47 μH 3.45A 29 12mm - 12mm 10mm - 12 x 12 x 10mm Yes - 63Ω - -
RS Stock No. 169-3737
BrandRS PRO
$0.28
Each (On a Reel of 1500)
units
220 μH 400mA 54 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 1.2Ω - -
RS Stock No. 741-8868
BrandRS PRO
$0.716
Each (In a Bag of 5)
units
22 μH 2.8A 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 36mΩ - -
RS Stock No. 169-3753
BrandRS PRO
$0.651
Each (On a Reel of 600)
units
22 μH 2.8A 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 36mΩ - -
RS Stock No. 740-9619
BrandRS PRO
$0.479
Each (In a Bag of 20)
units
220 μH 400mA 54 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 1.2Ω - -
RS Stock No. 169-3774
BrandRS PRO
$0.671
Each (On a Reel of 400)
units
680 μH 670mA 27 12.5mm - 12.5mm 8mm - 12.5 x 12.5 x 8mm Yes ±20% 1.46Ω - -
RS Stock No. 169-3475
BrandRS PRO
$0.693
Each (On a Reel of 750)
units
100 μH 350mA 0105 10.6mm - 10.5mm 5mm - 10.6 x 10.5 x 5mm Yes - 253mΩ - -
RS Stock No. 162-1418
BrandRS PRO
$0.892
Each (On a Reel of 500)
units
1 mH 300mA 31 12.8mm - 9.3mm 5mm - 12.8 x 9.3 x 5mm No ±20% - -
RS Stock No. 169-3438
BrandRS PRO
$0.643
Each (On a Reel of 500)
units
±680 μH 400mA 31 12.8mm - 9.3mm 5mm - 12.8 x 9.3 x 5mm - - 2.02Ω - -
RS Stock No. 162-1411
BrandRS PRO
$0.216
Each (On a Reel of 2000)
units
47 μH 600mA 43 4.5mm - 4mm 3.2mm - 4.5 x 4 x 3.2mm No ±20% 800mΩ - -
RS Stock No. 741-8865
BrandRS PRO
$1.036
Each (In a Bag of 5)
units
33 μH 2.1A 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 57mΩ - -
RS Stock No. 169-3752
BrandRS PRO
$0.929
Each (On a Reel of 600)
units
33 μH 2.1A 25 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 57mΩ - -
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