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. 172-9848
Mfr. Part No.SRP1265A-100M
BrandBourns
HK$6.242
Each (On a Reel of 500)
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10 μH 10A 1265 13.5mm AEC-Q200 12.5mm 6.2mm - 13.5 x 12.5 x 6.2mm Yes ±20% 16.5mΩ SRP1265A Carbonyl Powder
RS Stock No. 819-3488
Mfr. Part No.SRP1265A-100M
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HK$11.77
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units
10 μH 10A 1265 13.5mm AEC-Q200 12.5mm 6.2mm - 13.5 x 12.5 x 6.2mm Yes ±20% 16.5mΩ SRP1265A Carbonyl Powder
RS Stock No. 874-9716
Mfr. Part No.SDR1105-101KL
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HK$7.276
Each (In a Bag of 5)
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100 μH 2.8A E6 10mm - 11.1mm 4.8mm - 10 x 11.1 x 4.8mm - - 320mΩ SDR1105 Ferrite DR
RS Stock No. 172-8485
Mfr. Part No.SDR1105-101KL
BrandBourns
HK$3.066
Each (On a Reel of 800)
units
100 μH 2.8A E6 10mm - 11.1mm 4.8mm - 10 x 11.1 x 4.8mm - - - SDR1105 Ferrite DR
RS Stock No. 172-8509
Mfr. Part No.SRU1048-3R0Y
BrandBourns
HK$4.137
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. 725-5862
Mfr. Part No.SRU1048-3R0Y
BrandBourns
HK$7.06
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. 692-0688
Mfr. Part No.SRU1048-331Y
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HK$7.19
Each
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330 μH 650mA - 10mm - 10mm 4.8mm - 10 x 10 x 4.8mm Yes ±30% 490mΩ SRU1048 Ferrite
RS Stock No. 727-2031
Mfr. Part No.SRR4028-470Y
BrandBourns
HK$6.078
Each (In a Pack of 5)
units
47 μH 750mA 4028 4.8mm - 4.8mm 2.8mm - 4.8 x 4.8 x 2.8mm Yes ±30% 280mΩ SRR4028 Ferrite
RS Stock No. 172-7073
Mfr. Part No.SRN5040-470M
BrandBourns
HK$1.452
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. 743-5119
Mfr. Part No.SRN6045-6R8Y
BrandBourns
HK$3.539
Each (In a Bag of 10)
units
6.8 μH 3.8A 6045 6mm - 6mm 4.5mm - 6 x 6 x 4.5mm Yes ±30% 47mΩ SRN6045 Ferrite
RS Stock No. 181-6888
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$2.699
Each (On a Reel of 100)
units
1 mH 110mA SMD - - - 3mm 5mm 5 Dia. x 3mm - ±10% 11.5Ω SDR0503 Ferrite DR
RS Stock No. 181-6334
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$2.258
Each (On a Reel of 500)
units
1 mH 110mA SMD - - - 3mm 5mm 5 Dia. x 3mm - ±10% 11.5Ω SDR0503 Ferrite DR
RS Stock No. 743-5068
Mfr. Part No.SRN3015-4R7M
BrandBourns
HK$2.594
Each (In a Bag of 10)
units
4.7 μH 1.4A 3015 3mm - 3mm 1.5mm - 3 x 3 x 1.5mm Yes ±20% 136mΩ SRN3015 Ferrite
RS Stock No. 172-7200
Mfr. Part No.SRR1806-150M
BrandBourns
HK$5.037
Each (On a Reel of 250)
units
15 μH 7.2A 1806 18.3mm - 14mm 6.8mm - 18.3 x 14 x 6.8mm Yes ±20% - SRR1806 Ferrite
RS Stock No. 122-9178
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$3.646
Each (In a Pack of 10)
units
1 mH 110mA 0503 - - - 3mm 5mm 5 (Dia.) x 3mm - ±10% 11.5Ω SDR0503 Ferrite
RS Stock No. 727-2182
Mfr. Part No.SRR1806-150M
BrandBourns
HK$8.374
Each (In a Pack of 5)
units
15 μH 7.2A 1806 18.3mm - 14mm 6.8mm - 18.3 x 14 x 6.8mm Yes ±20% 39mΩ SRR1806 Ferrite
RS Stock No. 172-8464
Mfr. Part No.SRR4028-470Y
BrandBourns
HK$3.224
Each (On a Reel of 500)
units
47 μH 750mA 4028 4.8mm - 4.8mm 2.8mm - 4.8 x 4.8 x 2.8mm Yes ±30% - SRR4028 Ferrite
RS Stock No. 693-4561
Mfr. Part No.SRR1208-330YL
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HK$7.19
Each
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33 μH 2.8A - 12.7mm - 12.7mm 8.5mm - 12.7 x 12.7 x 8.5mm Yes ±15% 62mΩ SRR1208 Ferrite
RS Stock No. 172-8348
Mfr. Part No.SRN3015-4R7M
BrandBourns
HK$1.586
Each (On a Reel of 2000)
units
4.7 μH 1.4A 3015 3mm - 3mm 1.5mm - 3 x 3 x 1.5mm Yes ±20% - SRN3015 Ferrite
RS Stock No. 172-9602
Mfr. Part No.SRN6045-6R8Y
BrandBourns
HK$1.712
Each (On a Reel of 1000)
units
6.8 μH 3.8A 6045 6mm - 6mm 4.5mm - 6 x 6 x 4.5mm Yes ±30% 47mΩ SRN6045 Ferrite