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. 163-4985
Mfr. Part No.74438335220
MYR4.62
Each (On a Reel of 1000)
units
22 μH 600mA 3015 3mm - 3mm 1.5mm - 3 x 3 x 1.5mm - ±20% 1.04Ω WE-MAPI Composite Iron Powder
RS Stock No. 792-2812
Mfr. Part No.74438335220
MYR6.68
Each
units
22 μH 600mA 3015 3mm - 3mm 1.5mm - 3 x 3 x 1.5mm - ±20% 1.04Ω WE-MAPI Composite Iron Powder
RS Stock No. 816-4931
Mfr. Part No.7443643300
MYR38.24
Each
units
33 μH 30A 2818 28.5mm - 19.5mm 18.5mm - 28.5 x 19.5 x 18.5mm Yes ±15% 2.4mΩ WE-HCF MnZn
RS Stock No. 163-5518
Mfr. Part No.7443643300
MYR38.24
Each (In a Tray of 30)
units
33 μH 30A 2818 28.5mm - 19.5mm 18.5mm - 28.5 x 19.5 x 18.5mm Yes ±15% 2.4mΩ WE-HCF MnZn
RS Stock No. 500-3228
Mfr. Part No.744252220
MYR10.59
Each (In a Pack of 5)
units
22 μH 700mA - 9.2mm - 6.6mm 2.5mm - 9.2 x 6.6 x 2.5mm - -30 → +50% 140mΩ WE-SL3 Ferrite
RS Stock No. 744-4845
Mfr. Part No.744066680
MYR7.93
Each (In a Bag of 5)
units
68 μH 1.5A 1038 10mm - 10mm 3.8mm - 10 x 10 x 3.8mm Yes ±30% 216mΩ WE-TPC Ferrite
RS Stock No. 617-1495
Mfr. Part No.74477810
MYR10.71
Each
units
10 μH 1.38A - 7.3mm - 7.3mm 3.2mm - 7.3 x 7.3 x 3.2mm Yes ±20% 72mΩ WE-PD Ferrite
RS Stock No. 163-5051
Mfr. Part No.744774133
MYR4.763
Each (On a Reel of 1500)
units
33 μH 1.09A 5848 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±15% 230mΩ - -
RS Stock No. 163-3770
Mfr. Part No.74477810
MYR6.508
Each (On a Reel of 1000)
units
10 μH 1.38A - 7.3mm - 7.3mm 3.2mm - 7.3 x 7.3 x 3.2mm Yes ±20% 72mΩ WE-PD Ferrite
RS Stock No. 798-1767
Mfr. Part No.744774133
MYR7.20
Each
units
33 μH 1.09A 5848 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±15% 230mΩ - -
RS Stock No. 617-1732
Mfr. Part No.74477420
MYR7.20
Each
units
100 μH 570mA - 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 650mΩ WE-PD2 Ferrite
RS Stock No. 789-7123
Mfr. Part No.7447779115
MYR9.08
Each
units
15 μH 1.6A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 81mΩ WE-PD -
RS Stock No. 163-5097
Mfr. Part No.744777920
MYR6.34
Each (On a Reel of 1000)
units
100 μH 790mA - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 380mΩ WE-PD -
RS Stock No. 500-2994
Mfr. Part No.744231121
MYR4.34
Each (In a Pack of 5)
units
- 370mA 0805 (2012M) 2mm - 1.2mm 1.2mm - 2 x 1.2 x 1.2mm - ±25% 300mΩ WE-CNSW SMD Ferrite
RS Stock No. 800-7973
Mfr. Part No.744043331
MYR7.27
Each
units
330 μH 285mA 4828 4.8mm - 2.8mm 4.8mm - 4.8 x 4.8 x 2.8mm Yes ±30% 1.7Ω WE-TPC Ferrite
RS Stock No. 163-8188
Mfr. Part No.744913050
MYR2.53
Each (On a Reel of 500)
units
5 nH 4A 3136 3.68mm - 3.05mm 3.18mm - 3.68 x 3.05 x 3.18mm - - 1.8mΩ WE-CAIR -
RS Stock No. 800-8166
Mfr. Part No.7440690068
MYR7.36
Each
units
6.8 μH 1.75A 8015 8mm - 1.35mm 8mm - 8 x 8 x 1.35mm Yes ±20% 110mΩ WE-TPC Ferrite
RS Stock No. 789-7135
Mfr. Part No.7447779122
MYR9.08
Each
units
22 μH 1.41A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 110mΩ WE-PD -
RS Stock No. 163-3756
Mfr. Part No.74477420
MYR4.58
Each (On a Reel of 1500)
units
100 μH 570mA - 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 650mΩ WE-PD2 Ferrite
RS Stock No. 163-5089
Mfr. Part No.7447779122
MYR6.34
Each (On a Reel of 1000)
units
22 μH 1.41A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 110mΩ WE-PD -