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. 825-1865
Mfr. Part No.SRP4012TA-2R2M
BrandBourns
TWD34.20
Each (In a Bag of 5)
units
2.2 μH 2.8A 4012 4.45mm AEC-Q200 4.06mm 1mm - 4.45 x 4.06 x 1mm Yes ±20% 80mΩ SRP4012TA Carbonyl Powder
RS Stock No. 172-7212
Mfr. Part No.SRP4012TA-2R2M
BrandBourns
TWD18.40
Each (On a Reel of 4000)
units
2.2 μH 2.8A 4012 4.45mm AEC-Q200 4.06mm 1mm - 4.45 x 4.06 x 1mm Yes ±20% - SRP4012TA Carbonyl Powder
RS Stock No. 743-5185
Mfr. Part No.SRN8040-470M
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TWD17.00
Each (In a Bag of 10)
units
47 μH 1.5A 8040 8mm - 8mm 4mm - 8 x 8 x 4mm Yes ±20% 190mΩ SRN8040 Ferrite
RS Stock No. 172-8423
Mfr. Part No.SRN8040-470M
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TWD8.20
Each (On a Reel of 1000)
units
47 μH 1.5A 8040 8mm - 8mm 4mm - 8 x 8 x 4mm Yes ±20% - SRN8040 Ferrite
RS Stock No. 813-5700
Mfr. Part No.SRN5040-470M
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TWD13.10
Each (In a Bag of 10)
units
47 μH 900mA - 5mm - 5mm 4mm - 5 x 5 x 4mm Yes ±20% 324mΩ SRN5040 Ferrite
RS Stock No. 811-8702
Mfr. Part No.SRF0504-191Y
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TWD46.20
Each (In a Bag of 5)
units
600 nH 5A 0504 5mm - 5.2mm 4.7mm - 5 x 5.2 x 4.7mm Yes ±35% 20mΩ SRF0504 Ferrite
RS Stock No. 772-9739
Mfr. Part No.SRN4018-680M
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TWD11.20
Each (In a Bag of 10)
units
68 μH 500mA rms - 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% 1.128Ω SRN4018 Ferrite
RS Stock No. 172-7073
Mfr. Part No.SRN5040-470M
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TWD5.60
Each (On a Reel of 1000)
units
47 μH 900mA - 5mm - 5mm 4mm - 5 x 5 x 4mm Yes ±20% - SRN5040 Ferrite
RS Stock No. 172-9568
Mfr. Part No.SRN4018-680M
BrandBourns
TWD5.40
Each (On a Reel of 3000)
units
68 μH 500mA rms - 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% 1.128Ω SRN4018 Ferrite
RS Stock No. 172-8615
Mfr. Part No.SRF0504-191Y
BrandBourns
TWD20.70
Each (On a Reel of 1000)
units
600 nH 5A 0504 5mm - 5.2mm 4.7mm - 5 x 5.2 x 4.7mm Yes ±35% - SRF0504 Ferrite
RS Stock No. 727-2079
Mfr. Part No.SRR6028-100Y
BrandBourns
TWD28.40
Each (In a Pack of 5)
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10 μH 2A 6028 6.8mm - 6.8mm 2.8mm - 6.8 x 6.8 x 2.8mm Yes ±30% 65mΩ SRR6028 Ferrite
RS Stock No. 693-4665
Mfr. Part No.SRR1280-331K
BrandBourns
TWD42.00
Each
units
330 μH 1.1A - 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±10% 600mΩ SRR1280 Ferrite
RS Stock No. 172-8509
Mfr. Part No.SRU1048-3R0Y
BrandBourns
TWD15.60
Each (On a Reel of 600)
units
3 μH 6.2A 1048 10mm - 10mm 4.8mm - 10 x 10 x 4.8mm Yes ±30% - SRU1048 Ferrite
RS Stock No. 172-9664
Mfr. Part No.SRR6028-100Y
BrandBourns
TWD13.00
Each (On a Reel of 500)
units
10 μH 2A 6028 6.8mm - 6.8mm 2.8mm - 6.8 x 6.8 x 2.8mm Yes ±30% 65mΩ SRR6028 Ferrite
RS Stock No. 725-5862
Mfr. Part No.SRU1048-3R0Y
BrandBourns
TWD28.00
Each
units
3 μH 6.2A 1048 10mm - 10mm 4.8mm - 10 x 10 x 4.8mm Yes ±30% 7.2mΩ SRU1048 Ferrite
RS Stock No. 172-8540
Mfr. Part No.SRR1280-331K
BrandBourns
TWD22.30
Each (On a Reel of 400)
units
330 μH 1.1A - 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±10% - SRR1280 Ferrite
RS Stock No. 692-7771
Mfr. Part No.CM453232-101KL
BrandBourns
TWD8.40
Each (In a Pack of 10)
units
100 μH 110mA 1812 (4532M) 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±10% CM45 Ferrite
RS Stock No. 743-5096
Mfr. Part No.SRN6045-1R0Y
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TWD15.60
Each (In a Bag of 10)
units
1 μH 8.5A 6045 6mm - 6mm 4.5mm - 6 x 6 x 4.5mm Yes ±30% 14mΩ SRN6045 Ferrite
RS Stock No. 172-8537
Mfr. Part No.SRR1260-330M
BrandBourns
TWD17.30
Each (On a Reel of 600)
units
33 μH 3A 1260 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% - SRR1260 Ferrite
RS Stock No. 172-9686
Mfr. Part No.SRR7032-100M
BrandBourns
TWD10.40
Each (On a Reel of 1500)
units
10 μH 1.4A 7032 7mm - 7mm 3.2mm - 7 x 7 x 3.2mm Yes - 68mΩ SRR7032 Ferrite