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. 772-9714
Mfr. Part No.SRN4018-4R7M
BrandBourns
SGD0.402
Each (In a Bag of 10)
units
4.7 μH 1.9A rms - 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% 84mΩ SRN4018 Ferrite
RS Stock No. 396-6004
Mfr. Part No.74456233
SGD3.245
Each (In a Pack of 2)
units
330 μH 700mA - 12.7mm - 10mm 5mm - 12.7 x 10 x 5mm No ±10% 1.15Ω WE-PD4 Ferrite
RS Stock No. 748-7094
Mfr. Part No.IHLP2525CZER2R2M01
BrandVishay
SGD3.028
Each (In a Bag of 5)
units
2.2 μH 8A 2225 (5664M) 6.86mm - 6.47mm 3mm - 6.86 x 6.47 x 3mm Yes ±20% 20mΩ IHLP Metal Composite
RS Stock No. 785-5289
Mfr. Part No.LQW18AN8N7D00D
BrandMurata
SGD0.235
Each (In a Bag of 10)
units
8.7 nH 650mA 0603 (1608M) 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±0.5nH 110mΩ LQW18A Ferrite
RS Stock No. 167-8234
Mfr. Part No.B82793C0475N265
BrandEPCOS
SGD1.754
Each (On a Reel of 1500)
units
4.7 mH 400mA - 9mm - 6mm 4.8mm - 9 x 6 x 4.8mm - -30 → +50% 550mΩ B82793 Ferrite
RS Stock No. 617-1754
Mfr. Part No.744774222
SGD2.73
Each
units
220 μH 420mA - 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 1.57Ω WE-PD2 Ferrite
RS Stock No. 729-6548
Mfr. Part No.SDR1806-101KL
BrandBourns
SGD6.35
1 Pack of 5
Pack(s)
100 μH 1.7A - 18.3mm - 14mm 6.6mm - 18.3 x 14 x 6.6mm - ±10% 190mΩ SDR1806 Ferrite
RS Stock No. 172-7192
Mfr. Part No.SDR1806-101KL
BrandBourns
SGD0.852
Each (On a Reel of 250)
units
100 μH 1.7A - 18.3mm - 14mm 6.6mm - 18.3 x 14 x 6.6mm - ±10% - SDR1806 Ferrite
RS Stock No. 496-2558
Mfr. Part No.B82793C0475N265
BrandEPCOS
SGD3.814
Each (In a Pack of 5)
units
4.7 mH 400mA - 9mm - 6mm 4.8mm - 9 x 6 x 4.8mm - -30 → +50% 550mΩ B82793 Ferrite
RS Stock No. 748-6921
Mfr. Part No.IHLP2020CZER150M01
BrandVishay
SGD2.274
Each (In a Bag of 5)
units
15 μH 1.9A 2020 5.49mm - 5.18mm 3mm - 5.49 x 5.18 x 3mm Yes ±20% 265mΩ IHLP-2020AB-01 Metal Composite
RS Stock No. 792-6495
Mfr. Part No.LQW18AN2N2D00D
BrandMurata
SGD0.243
Each (In a Bag of 10)
units
2.2 nH 700mA 0603 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±0.5nH 49mΩ LQQ18A -
RS Stock No. 693-4640
Mfr. Part No.SRR1280-101M
BrandBourns
SGD1.54
Each
units
100 μH 2.1A - 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±20% 150mΩ SRR1280 Ferrite
RS Stock No. 173-1377
Mfr. Part No.IHLP2525CZER2R2M01
BrandVishay
SGD0.903
Each (On a Reel of 2000)
units
2.2 μH 8A 2225 (5664M) 6.86mm - 6.47mm 3mm - 6.86 x 6.47 x 3mm Yes ±20% 20mΩ IHLP Metal Composite
RS Stock No. 669-0422
Mfr. Part No.744778610
SGD3.66
Each
units
10 μH 2.1A - 5.9mm - 6.2mm 5.1mm - 5.9 x 6.2 x 5.1mm Yes ±25% 88mΩ WE-PD Ferrite
RS Stock No. 737-3642
Mfr. Part No.744273102
SGD4.93
Each
units
11 μH 2.5A 744273 9.5mm - 8.3mm 5.3mm - 9.5 x 8.3 x 5.3mm - - 30mΩ WE-SL5 Ferrite
RS Stock No. 172-8385
Mfr. Part No.SRN6045-470M
BrandBourns
SGD0.32
Each (On a Reel of 1000)
units
47 μH 1.3A 6045 6mm - 6mm 4.5mm - 6 x 6 x 4.5mm Yes ±20% - SRN6045 Ferrite
RS Stock No. 813-5744
Mfr. Part No.SRN6028-150M
BrandBourns
SGD0.478
Each (In a Bag of 10)
units
15 μH 1.8A - 6mm - 6mm 2.8mm - 6 x 6 x 2.8mm Yes ±20% 114mΩ SRN6028 Ferrite
RS Stock No. 165-3151
Mfr. Part No.ACT45B-220-2P-TL
BrandTDK
SGD1.068
Each (On a Reel of 2500)
units
22 μH 200mA 1812 (4532M) 4.5mm - 3.2mm 2.8mm - 4.5 x 3.2 x 2.8mm Yes -30 → +50% ACT -
RS Stock No. 172-8355
Mfr. Part No.SRN4018-4R7M
BrandBourns
SGD0.239
Each (On a Reel of 3000)
units
4.7 μH 1.9A rms - 4mm - 4mm 1.8mm - 4 x 4 x 1.8mm Yes ±20% - SRN4018 Ferrite
RS Stock No. 172-8544
Mfr. Part No.SRR1280-330M
BrandBourns
SGD0.839
Each (On a Reel of 400)
units
33 μH 3.5A - - - - - - - - ±20% - SRR1280 Ferrite