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. 481-1898
Mfr. Part No.LQH32CN101K23L
BrandMurata
HK$2.532
Each (In a Pack of 20)
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. 163-3327
Mfr. Part No.744770115
HK$21.785
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. 172-9896
Mfr. Part No.PM2120-221K-RC
BrandBourns
HK$24.402
Each (In a Bag of 77)
units
220 μH 5A 2120 30.5mm - 25.4mm 21.08mm - 30.5 x 25.4 x 21.08mm - ±10% 52mΩ PM2120 Iron
RS Stock No. 167-5714
Mfr. Part No.LQW18AN27NG00D
BrandMurata
HK$0.505
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. 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. 496-1959
Mfr. Part No.B82477G4333M000
BrandEPCOS
HK$17.19
Each
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$0.89
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. 813-5700
Mfr. Part No.SRN5040-470M
BrandBourns
HK$2.352
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. 166-9815
Mfr. Part No.LQW2UASR33J00L
BrandMurata
HK$0.727
Each (On a Reel of 2000)
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$18.93
Each
units
15 μH 5A - 12mm - 12mm 8mm - 12 x 12 x 8mm Yes ±20% 27mΩ WE-PD Ferrite
RS Stock No. 108-4740
Mfr. Part No.SLF12555T-102MR34-PF
BrandTDK
HK$6.037
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. 167-5578
Mfr. Part No.LQH55DN6R8M03L
BrandMurata
HK$8.33
Each (On a Reel of 350)
units
6.8 μH 2A 2220 (5650M) 5.7mm - 5mm 4.7mm - 5.7 x 5 x 4.7mm - ±20% 74mΩ LQH55D -
RS Stock No. 748-7274
Mfr. Part No.IHLP4040DZER101M11
BrandVishay
HK$24.70
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. 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. 748-7564
Mfr. Part No.IHLP6767GZER150M01
BrandVishay
HK$38.78
Each
units
15 μH 12.5A 6767 17.15mm - 17.15mm 7mm - 17.15 x 17.15 x 7mm Yes ±20% 19.9mΩ IHLP-6767GZ-01 Metal Composite
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. 469-2782
Mfr. Part No.LQH32CN4R7M23L
BrandMurata
HK$2.47
Each (In a Pack of 20)
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. 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. 122-9197
Mfr. Part No.5258-RC
BrandBourns
HK$17.83
Each (In a Pack of 2)
units
1 mH 1.1A - - - - 31.75mm 12.7mm 12.7 (Dia.) x 31.75mm - - 550mΩ 5200 Ferrite
RS Stock No. 167-8549
Mfr. Part No.B82477G4333M000
BrandEPCOS
HK$7.82
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
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