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. 692-0688
Mfr. Part No.SRU1048-331Y
BrandBourns
HK$5.90
Each
units
330 μH 650mA - 10mm - 10mm 4.8mm - 10 x 10 x 4.8mm Yes ±30% 490mΩ SRU1048 Ferrite
RS Stock No. 724-1643
Mfr. Part No.BNX022-01L
BrandMurata
HK$51.60
Each
units
- 10A - 12.1mm - 9.1mm 3.1mm - 12.1 x 9.1 x 3.1mm - - 430µΩ BNX02 -
RS Stock No. 106-5389
Mfr. Part No.LQW2UASR33J00L
BrandMurata
HK$2.019
Each (In a Pack of 20)
units
330 nH 450mA 2520 2.62mm - 2.45mm 1.83mm - 2.62 x 2.45 x 1.83mm - ±5% 1.05Ω LQW2UAS_00 Non-Magnetic Core
RS Stock No. 333-8588
Mfr. Part No.744770115
HK$19.25
Each
units
15 μH 5A - 12mm - 12mm 8mm - 12 x 12 x 8mm Yes ±20% 27mΩ WE-PD Ferrite
RS Stock No. 167-5714
Mfr. Part No.LQW18AN27NG00D
BrandMurata
HK$0.514
Each (On a Reel of 4000)
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. 367-4424
Mfr. Part No.74476620
HK$4.67
Each (In a Pack of 10)
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. 167-8535
Mfr. Part No.B82472G4103M000
BrandEPCOS
HK$4.542
Each (On a Reel of 1000)
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. 819-3517
Mfr. Part No.SRP1265A-4R7M
BrandBourns
HK$11.022
Each (In a Bag of 5)
units
4.7 μH 13.5A 1265 13.5mm AEC-Q200 12.5mm 6.2mm - 13.5 x 12.5 x 6.2mm Yes ±20% 8.4mΩ SRP1265A Carbonyl Powder
RS Stock No. 108-4740
Mfr. Part No.SLF12555T-102MR34-PF
BrandTDK
HK$6.16
Each (On a Reel of 500)
units
1 mH 600mA - 12.5mm - 12.5mm 5.5mm - 12.5 x 12.5 x 5.5mm Yes ±20% 1.12Ω SLF Ferrite
RS Stock No. 469-2805
Mfr. Part No.LQH32CN220K23L
BrandMurata
HK$2.532
Each (In a Pack of 20)
units
22 μH 250mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 710mΩ LQH32CN -
RS Stock No. 173-0649
Mfr. Part No.IHLP6767GZER150M01
BrandVishay
HK$25.67
Each (On a Reel of 200)
units
15 μH 12.5A 6767 17.15mm - 17.15mm 7mm - 17.15 x 17.15 x 7mm Yes ±20% 19.9mΩ IHLP Metal Composite
RS Stock No. 172-7073
Mfr. Part No.SRN5040-470M
BrandBourns
HK$1.16
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. 162-1450
Mfr. Part No.B82422A3681K100
BrandEPCOS
HK$1.864
Each (On a Reel of 2000)
units
680 nH 145mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 2.4Ω SIMID Ceramic
RS Stock No. 748-7274
Mfr. Part No.IHLP4040DZER101M11
BrandVishay
HK$29.53
Each (In a Bag of 5)
units
100 μH 2.5A 4040 10.92mm - 10.3mm 4mm - 10.92 x 10.3 x 4mm Yes ±20% 270mΩ IHLP-4040DZ-11 Metal Composite
RS Stock No. 167-8549
Mfr. Part No.B82477G4333M000
BrandEPCOS
HK$7.334
Each (On a Reel of 400)
units
33 μH 3A - 12.8mm - 12.8mm 8mm - 12.8 x 12.8 x 8mm Yes ±20% 53mΩ B82477-G4 Ferrite
RS Stock No. 166-9890
Mfr. Part No.LQH32CN220K23L
BrandMurata
HK$0.901
Each (On a Reel of 2000)
units
22 μH 250mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 710mΩ LQH32CN -
RS Stock No. 125-3127
Mfr. Part No.LQH32CN470K23L
BrandMurata
HK$0.907
Each (On a Reel of 2000)
units
47 μH 170mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 1.3Ω LQH32CN -
RS Stock No. 617-1079
Mfr. Part No.744053220
HK$12.61
Each
units
22 μH 1.15A 5828 5.8mm - 5.8mm 2.8mm - 5.8 x 5.8 x 2.8mm Yes ±30% 120mΩ WE-TPC Ferrite
RS Stock No. 124-5783
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$1.679
Each (On a Reel of 1000)
units
- - - - - - - - - - - - SDR0503 -
RS Stock No. 191-0251
Mfr. Part No.B82422A3681K100
BrandEPCOS
HK$5.31
Each (In a Pack of 5)
units
680 nH 145mA 1210 (3225M) 3.2mm - 2.5mm 2mm - 3.2 x 2.5 x 2mm - ±10% 2.4Ω SIMID Ceramic
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