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. 814-2519
Mfr. Part No.74404042047
€1.062
Each (In a Bag of 5)
units
4.7 μH 1.7A 4018 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% 70mΩ WE-LQS -
RS Stock No. 899-7337
Mfr. Part No.74479899210
€0.904
Each (In a Bag of 5)
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1 μH 2.3A 1210 (3225M) 3.2mm - 2.6mm 1.2mm - 3.2 x 2.6 x 1.2mm Yes - 50mΩ WE-PMI -
RS Stock No. 163-4784
Mfr. Part No.74404042047
€0.521
Each (On a Reel of 3000)
units
4.7 μH 1.7A 4018 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% 70mΩ WE-LQS -
RS Stock No. 163-8142
Mfr. Part No.74479899210
€0.597
Each (On a Reel of 3000)
units
1 μH 2.3A 1210 (3225M) 3.2mm - 2.6mm 1.2mm - 3.2 x 2.6 x 1.2mm Yes - 50mΩ WE-PMI -
RS Stock No. 816-4979
Mfr. Part No.744912168
€1.02
Each (In a Bag of 5)
units
68 nH 2.5A 4248 3.81mm - 4.2mm 4.83mm - 3.81 x 4.2 x 4.83mm Yes ±5% 8.2mΩ WE-CAIR -
RS Stock No. 800-8140
Mfr. Part No.74406900022
€1.13
Each
units
220 nH 5.5A 8015 8mm - 1.35mm 8mm - 8 x 8 x 1.35mm Yes ±20% 14mΩ WE-TPC Ferrite
RS Stock No. 144-9807
Mfr. Part No.7447918
€0.273
Each (On a Reel of 3000)
units
10 μH 25mA 1206 (3216M) 3.2mm - 1.6mm 1.1mm - 3.2 x 1.6 x 1.1mm Yes ±10% 600mΩ WE-MI Ferrite
RS Stock No. 744-5141
Mfr. Part No.744871004
€2.30
Each
units
4.7 μH 8A 1260 12.5mm - 12.5mm 6.5mm - 12.5 x 12.5 x 6.5mm Yes ±20% 28mΩ WE-DD Ferrite
RS Stock No. 124-1871
Mfr. Part No.7447918
€0.379
Each (In a Pack of 20)
units
10 μH 25mA 1206 (3216M) 3.2mm - 1.6mm 1.1mm - 3.2 x 1.6 x 1.1mm Yes ±10% 600mΩ WE-MI Ferrite
RS Stock No. 863-0823
Mfr. Part No.74438336100
€1.24
Each (In a Bag of 5)
units
10 μH 1.2A 3020 3mm - 3mm 2mm - 3 x 3 x 2mm Yes ±20% 322mΩ WE-MAPI Magnetic Iron Alloy
RS Stock No. 163-5571
Mfr. Part No.744912168
€0.477
Each (On a Reel of 1000)
units
68 nH 2.5A 4248 3.81mm - 4.2mm 4.83mm - 3.81 x 4.2 x 4.83mm Yes ±5% 8.2mΩ WE-CAIR -
RS Stock No. 163-7448
Mfr. Part No.74438336100
€0.786
Each (On a Reel of 1000)
units
10 μH 1.2A 3020 3mm - 3mm 2mm - 3 x 3 x 2mm Yes ±20% 322mΩ WE-MAPI Magnetic Iron Alloy
RS Stock No. 163-4269
Mfr. Part No.744871004
€1.475
Each (On a Reel of 500)
units
4.7 μH 8A 1260 12.5mm - 12.5mm 6.5mm - 12.5 x 12.5 x 6.5mm Yes ±20% 28mΩ WE-DD Ferrite
RS Stock No. 163-4857
Mfr. Part No.74406900022
€1.107
Each (On a Reel of 550)
units
220 nH 5.5A 8015 8mm - 1.35mm 8mm - 8 x 8 x 1.35mm Yes ±20% 14mΩ WE-TPC Ferrite
RS Stock No. 124-1874
Mfr. Part No.742792515
€0.222
Each (In a Pack of 50)
units
- 3A 1812 (4532M) 4.5mm - 3.2mm 1.5mm - 4.5 x 3.2 x 1.5mm Yes - 50mΩ WE-CBF Ferrite
RS Stock No. 816-4975
Mfr. Part No.744912156
€0.982
Each (In a Bag of 5)
units
56 nH 3A 4248 3.81mm - 4.2mm 4.83mm - 3.81 x 4.2 x 4.83mm Yes ±5% 6.2mΩ WE-CAIR -
RS Stock No. 144-9797
Mfr. Part No.74279205
€0.078
Each (On a Reel of 4000)
units
- 200mA 0805 (2012M) 2mm - 1.2mm 0.9mm - 2 x 1.2 x 0.9mm Yes - 450mΩ WE-CBF Ferrite
RS Stock No. 432-4524
Mfr. Part No.744220
€2.51
Each
units
4.7 mH 500mA - 9.2mm - 6mm 5mm - 9.2 x 6 x 5mm - ±50% 750mΩ WE-SL2 Ferrite
RS Stock No. 163-3614
Mfr. Part No.744065101
€0.886
Each (On a Reel of 1000)
units
100 μH 1A 1028 10mm - 10mm 2.8mm - 10 x 10 x 2.8mm Yes ±30% 470mΩ WE-TPC Ferrite
RS Stock No. 163-4011
Mfr. Part No.744025100
€0.731
Each (On a Reel of 550)
units
10 μH 1.1A 2828 2.8mm - 2.8mm 2.8mm - 2.8 x 2.8 x 2.8mm Yes ±20% 190mΩ WE-TPC Ferrite