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. 173-0462
Mfr. Part No.IHLP2020CZER4R7M01
BrandVishay
HK$6.11
Each (On a Reel of 2000)
units
4.7 μH 3.5A 2020 5.49mm - 5.18mm 3mm - 5.49 x 5.18 x 3mm Yes ±20% 77.5mΩ IHLP Metal Composite
RS Stock No. 163-3326
Mfr. Part No.74477010
HK$12.247
Each (On a Reel of 500)
units
10 μH 6.2A - 12mm - 12mm 8mm - 12 x 12 x 8mm Yes ±20% 22mΩ WE-PD Ferrite
RS Stock No. 396-3493
Mfr. Part No.7445720
HK$20.13
Each (In a Pack of 2)
units
100 μH 2A - 22mm - 15mm 7mm - 22 x 15 x 7mm No ±10% 202mΩ WE-PD4 Ferrite
RS Stock No. 715-7087
Mfr. Part No.50105C
HK$10.40
Each
units
1 mH 700mA - 9.3mm - 5.9mm 4.4mm - 9.3 x 5.9 x 4.4mm - -30 → +50% 300mΩ 5000 -
RS Stock No. 669-0179
Mfr. Part No.744029100
HK$12.24
Each (In a Pack of 5)
units
10 μH 750mA 2813 2.8mm - 2.8mm 1.35mm - 2.8 x 2.8 x 1.35mm Yes ±30% 470mΩ WE-TPC Ferrite
RS Stock No. 166-9884
Mfr. Part No.LQW18CNR27J00D
BrandMurata
HK$1.577
Each (On a Reel of 4000)
units
270 nH 750mA 1608 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±5% 160mΩ LQW18CN_00 Ferrite
RS Stock No. 106-5370
Mfr. Part No.LQW18CNR27J00D
BrandMurata
HK$3.97
Each (In a Pack of 20)
units
270 nH 750mA 1608 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±5% 160mΩ LQW18CN_00 Ferrite
RS Stock No. 786-9528
Mfr. Part No.SLF12555T-101M1R1-PF
BrandTDK
HK$13.69
Each (In a Bag of 5)
units
100 μH 1.8A - 12.5mm - 12.5mm 5.5mm - 12.5 x 12.5 x 5.5mm Yes ±20% 117mΩ SLF Ferrite
RS Stock No. 172-8509
Mfr. Part No.SRU1048-3R0Y
BrandBourns
HK$3.172
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. 172-9896
Mfr. Part No.PM2120-221K-RC
BrandBourns
HK$24.585
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. 367-5089
Mfr. Part No.744777122
HK$20.71
Each
units
22 μH 1.41A - 7.3mm - 7.3mm 4.5mm - 7.3 x 7.3 x 4.5mm Yes ±20% 110mΩ WE-PD Ferrite
RS Stock No. 167-6235
Mfr. Part No.82223C
HK$2.40
Each (On a Reel of 2500)
units
22 μH 320mA - 2.5mm - 3.2mm 2mm - 2.5 x 3.2 x 2mm - - 920mΩ 8200 -
RS Stock No. 167-5734
Mfr. Part No.LQW18AN8N2D10D
BrandMurata
HK$0.524
Each (On a Reel of 4000)
units
8.2 nH 800mA 0603 (1608M) 1.6mm - 0.8mm 0.8mm - 1.6 x 0.8 x 0.8mm - ±0.5nH 58mΩ LQW18A -
RS Stock No. 903-9543
Mfr. Part No.VLF403215MT-100M
BrandTDK
HK$16.17
Each (In a Bag of 5)
units
10 μH 1A 403215 4mm - 3.2mm 1.5mm - 4 x 3.2 x 1.5mm Yes - 180mΩ VLF-M Ferrite
RS Stock No. 786-9522
Mfr. Part No.SLF12555T-102MR34-PF
BrandTDK
HK$13.69
Each (In a Bag of 5)
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. 770-0978
Mfr. Part No.DR125-470-R
HK$17.016
Each (In a Bag of 5)
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. 166-9815
Mfr. Part No.LQW2UASR33J00L
BrandMurata
HK$0.706
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. 469-2782
Mfr. Part No.LQH32CN4R7M23L
BrandMurata
HK$2.52
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. 181-6888
Mfr. Part No.SDR0503-102KL
BrandBourns
HK$2.40
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. 749-8482
Mfr. Part No.ELL8TP151MB
BrandPanasonic
HK$9.79
Each (In a Bag of 5)
units
150 μH 800mA ELL8TP 8mm - 8mm 4.7mm - 8 x 8 x 4.7mm Yes ±20% 340mΩ ELL8TP Metal Composite
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