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. 727-2268
Mfr. Part No.SRR1280-4R7Y
BrandBourns
$1.576
Each (In a Pack of 5)
units
4.7 μH 8.8A 1280 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±30% 15.5mΩ SRR1280 Ferrite
RS Stock No. 729-6523
Mfr. Part No.SDR1005-470KL
BrandBourns
$1.018
Each (In a Pack of 5)
units
47 μH 1.4A 1005 12.7mm - 10mm 5mm - 12.7 x 10 x 5mm - ±10% 190mΩ SDR1005 Ferrite
RS Stock No. 772-9714
Mfr. Part No.SRN4018-4R7M
BrandBourns
$0.417
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. 532-3572
Mfr. Part No.36502AR47JTDG
$0.662
Each (In a Pack of 10)
units
470 nH 220mA 0805 (2012M) 2.29mm - 1.73mm 1.52mm - 2.29 x 1.73 x 1.52mm - ±5% 1.7Ω 3650 -
RS Stock No. 496-2621
Mfr. Part No.B82789C0513N002
BrandEPCOS
$3.042
Each (In a Pack of 5)
units
51 μH 250mA 1812 (4532M) 5.2mm - 3.2mm 3mm - 5.2 x 3.2 x 3mm - -30 → +50% 550mΩ B82789 Ferrite
RS Stock No. 172-8355
Mfr. Part No.SRN4018-4R7M
BrandBourns
$0.45
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. 163-3327
Mfr. Part No.744770115
$4.508
Each (On a Reel of 500)
units
15 μH 5A - 12mm - 12mm 8mm - 12 x 12 x 8mm Yes ±20% 27mΩ WE-PD Ferrite
RS Stock No. 333-8588
Mfr. Part No.744770115
$3.82
Each
units
15 μH 5A - 12mm - 12mm 8mm - 12 x 12 x 8mm Yes ±20% 27mΩ WE-PD Ferrite
RS Stock No. 177-4877
Mfr. Part No.B82789C0513N002
BrandEPCOS
$1.41
Each (On a Reel of 2500)
units
51 μH 250mA 1812 (4532M) 5.2mm - 3.2mm 3mm - 5.2 x 3.2 x 3mm - -30 → +50% 550mΩ B82789 Ferrite
RS Stock No. 163-7481
Mfr. Part No.744762139A
$0.47
Each (On a Reel of 2000)
units
39 nH 1A 1008A 2.5mm - 2mm 1.6mm - 2.5 x 2 x 1.6mm Yes - 100mΩ WE-KI Ceramic
RS Stock No. 878-8657
Mfr. Part No.LQH2HPN100MJRL
BrandMurata
$0.648
Each (In a Bag of 10)
units
10 μH 830mA 2520 2.5mm - 2mm 1.1mm - 2.5 x 2 x 1.1mm Yes - 450mΩ LQH Ferrite
RS Stock No. 741-2986
Mfr. Part No.SLF7032T-102MR13-2PF
BrandTDK
$1.662
Each (In a Bag of 10)
units
1 mH 130mA - - - - - - - - ±20% 4.78Ω SLF -
RS Stock No. 883-0073
Mfr. Part No.744762139A
$0.716
Each (In a Bag of 10)
units
39 nH 1A 1008A 2.5mm - 2mm 1.6mm - 2.5 x 2 x 1.6mm Yes - 100mΩ WE-KI Ceramic
RS Stock No. 163-9511
Mfr. Part No.36502AR47JTDG
$0.385
Each (On a Reel of 2000)
units
470 nH 220mA 0805 (2012M) 2.29mm - 1.73mm 1.52mm - 2.29 x 1.73 x 1.52mm - ±5% 1.7Ω 3650 -
RS Stock No. 167-5025
Mfr. Part No.LQH2HPN100MJRL
BrandMurata
$0.273
Each (On a Reel of 2000)
units
10 μH 830mA 2520 2.5mm - 2mm 1.1mm - 2.5 x 2 x 1.1mm Yes - 450mΩ LQH Ferrite
RS Stock No. 163-3272
Mfr. Part No.74456222
$2.684
Each (On a Reel of 600)
units
220 μH 900mA - 12.7mm - 10mm 5mm - 12.7 x 10 x 5mm No ±10% 780mΩ WE-PD4 Ferrite
RS Stock No. 500-3290
Mfr. Part No.744272471
$5.328
Each (In a Pack of 5)
units
470 μH 1.6A - 10mm - 8.7mm 6.5mm - 10 x 8.7 x 6.5mm - ±40% 65mΩ WE-SL5 Ferrite
RS Stock No. 532-3522
Mfr. Part No.36502AR33JTDG
$0.564
Each (In a Pack of 10)
units
330 nH 310mA 0805 (2012M) 2.29mm - 1.73mm 1.52mm - 2.29 x 1.73 x 1.52mm - ±5% 1.4Ω 3650 -
RS Stock No. 749-8394
Mfr. Part No.74408943033
$3.55
Each
units
3.3 μH 3.6A 4838 4.8mm - 4.8mm 3.8mm - 4.8 x 4.8 x 3.8mm Yes ±20% 36mΩ WE-SPC Ferrite
RS Stock No. 604-4163
Mfr. Part No.SLF12555T-681MR43-PF
BrandTDK
$2.764
Each (In a Pack of 5)
units
680 μH 430mA - 12.5mm - 12.5mm 5.5mm - 12.5 x 12.5 x 5.5mm Yes ±20% 760mΩ - -
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