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. 172-7200
Mfr. Part No.SRR1806-150M
BrandBourns
HK$4.45
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. 172-8464
Mfr. Part No.SRR4028-470Y
BrandBourns
HK$2.73
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. 181-6334
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$2.01
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. 727-2031
Mfr. Part No.SRR4028-470Y
BrandBourns
HK$5.13
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. 743-5068
Mfr. Part No.SRN3015-4R7M
BrandBourns
HK$2.482
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. 724-2945
Mfr. Part No.LQW18AN27NG00D
BrandMurata
HK$1.46
Each (In a Pack of 10)
units
27 nH 440mA 0603 (1608M) 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±2% 210mΩ LQW18A -
RS Stock No. 727-2182
Mfr. Part No.SRR1806-150M
BrandBourns
HK$7.36
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. 172-9754
Mfr. Part No.SRR1208-330YL
BrandBourns
HK$3.96
Each (On a Reel of 400)
units
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. 905-5024
Mfr. Part No.82223C
HK$2.70
Each (In a Bag of 5)
units
22 μH 320mA - 2.5mm - 3.2mm 2mm - 2.5 x 3.2 x 2mm - - 920mΩ 8200 -
RS Stock No. 169-9626
Mfr. Part No.DR125-470-R
HK$10.997
Each (On a Reel of 600)
units
47 μH 3.24A 0125 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 74mΩ DR73/74/125/127 Ferrite
RS Stock No. 173-2772
Mfr. Part No.IHLP4040DZER101M11
BrandVishay
HK$11.30
Each (On a Reel of 500)
units
100 μH 2.5A 4040 10.92mm - 10.3mm 4mm - 10.92 x 10.3 x 4mm Yes ±20% 270mΩ IHLP Metal Composite
RS Stock No. 125-3130
Mfr. Part No.LQH32CN101K23L
BrandMurata
HK$0.881
Each (On a Reel of 2000)
units
100 μH 100mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 3.5Ω LQH32CN -
RS Stock No. 743-5119
Mfr. Part No.SRN6045-6R8Y
BrandBourns
HK$3.358
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. 693-4561
Mfr. Part No.SRR1208-330YL
BrandBourns
HK$7.19
Each
units
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. 813-5700
Mfr. Part No.SRN5040-470M
BrandBourns
HK$3.554
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. 125-3126
Mfr. Part No.LQH32CN4R7M23L
BrandMurata
HK$0.907
Each (On a Reel of 2000)
units
4.7 μH 450mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±20% 200mΩ LQH32CN -
RS Stock No. 122-9178
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$3.35
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. 496-1498
Mfr. Part No.B82472G4103M000
BrandEPCOS
HK$11.196
Each (In a Pack of 5)
units
10 μH 1.7A - 7.3mm - 7.3mm 3.3mm - 7.3 x 7.3 x 3.3mm Yes ±20% 80mΩ B82472-G4 Ferrite
RS Stock No. 163-3321
Mfr. Part No.74476620
HK$3.95
Each (On a Reel of 500)
units
100 μH 110mA 1812 (4532M) 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±10% WE-GF Ferrite
RS Stock No. 172-8348
Mfr. Part No.SRN3015-4R7M
BrandBourns
HK$1.195
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
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