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. 185-7528
Mfr. Part No.7447773221
SGD3.11
Each
units
220 μH 630mA SMT 7.3mm - 7.4mm 4.5mm - 7.3 x 7.4 x 4.5mm Yes ±20% 770mΩ WE-PD MnZn
RS Stock No. 167-5582
Mfr. Part No.LQH66SN2R2M03L
BrandMurata
SGD2.039
Each (On a Reel of 350)
units
2.2 μH 3.3A 2225 (5664M) - - - - - 6.3 x 4.7 x 6.3mm - ±20% 19mΩ LQH66S -
RS Stock No. 168-3139
Mfr. Part No.7447732115
SGD0.975
Each (On a Reel of 3000)
units
15 μH 640mA 3521 3.5mm - 3mm 2.1mm - 3.5 x 3 x 2.1mm - ±20% 430mΩ WE-PD2 -
RS Stock No. 144-6480
Mfr. Part No.SRP2510A-R22M
BrandBourns
SGD0.504
Each (In a Pack of 10)
units
220 nH 5.9A - 2.5mm AEC-Q200 2mm 1mm - 2.5 x 2 x 1mm Yes ±20% 12.5mΩ SRP2510A -
RS Stock No. 748-6723
Mfr. Part No.IHLP1616ABERR10M01
BrandVishay
SGD2.162
Each (In a Bag of 5)
units
100 nH 11.5A 1616 4.45mm - 4.06mm 1.2mm - 4.45 x 4.06 x 1.2mm Yes ±20% 6mΩ IHLP-1616AB-01 Metal Composite
RS Stock No. 163-3286
Mfr. Part No.7446120027
SGD3.957
Each (In a Box of 100)
units
27 mH 400mA - 18.5mm - 13.5mm 20.5mm - 18.5 x 13.5 x 20.5mm - ±30% 1.2Ω WE-LF -
RS Stock No. 135-4862
Mfr. Part No.74406042101
SGD1.38
Each (In a Pack of 10)
units
100 μH 420mA 4818 4.8mm - 4.8mm 1.8mm - 4.8 x 4.8 x 1.8mm Yes ±20% 1.386Ω WE-LQFS -
RS Stock No. 172-8461
Mfr. Part No.SRR7032-3R3M
BrandBourns
SGD0.443
Each (On a Reel of 1500)
units
3.3 μH 2.4A 7032 7mm - 7mm 3.2mm - 7 x 7 x 3.2mm Yes - - SRR7032 Ferrite
RS Stock No. 744-4961
Mfr. Part No.7447798221
SGD5.21
Each
units
22 μH 4.7A 1064 10.2mm - 10.2mm 6.4mm - 10.2 x 10.2 x 6.4mm Yes ±20% 37.3mΩ WE-PDF Ferrite
RS Stock No. 571-224
Mfr. Part No.EEUFC1H680
BrandPanasonic
SGD0.654
Each (In a Pack of 5)
units
- - - - - - 11.5mm 8mm 8 (Dia.) x 11.5mm - ±20% - FC Radial -
RS Stock No. 135-4605
Mfr. Part No.74406042022
SGD0.78
Each (On a Reel of 1000)
units
2.2 μH 3.36A 4818 4.8mm - 4.8mm 1.8mm - 4.8 x 4.8 x 1.8mm Yes ±30% 40mΩ WE-LQFS -
RS Stock No. 878-8600
Mfr. Part No.LQH44PN4R7MGRL
BrandMurata
SGD0.686
Each (In a Bag of 10)
units
4.7 μH 1.6A 4040 4mm - 4mm 0.9mm - 4 x 4 x 0.9mm Yes - 150mΩ LQH Ferrite
RS Stock No. 106-8547
Mfr. Part No.60B683C
SGD4.29
Each (In a Tray of 30)
units
68 μH 9A - 27mm - 19.5mm 20mm - 27 x 19.5 x 20mm - ±15% 17mΩ 6000B -
RS Stock No. 814-2578
Mfr. Part No.74404054220
SGD1.796
Each (In a Bag of 5)
units
22 μH 1.5A 5040 5mm - 5mm 4mm - 5 x 5 x 4mm Yes ±20% 129mΩ WE-LQS -
New
RS Stock No. 212-7251
Mfr. Part No.78436432033
SGD15.86
Each
units
3.3 μH 38A Package 27.5mm AEC-Q200 27.5mm - - - No 15% - WE-HCFA -
RS Stock No. 839-0929
Mfr. Part No.LQM21PN2R2NGCD
BrandMurata
SGD0.497
Each (In a Bag of 10)
units
2.2 μH 800mA 0805 (2012M) 2mm - 1.25mm 0.9mm - 2 x 1.25 x 0.9mm Yes ±30% 230mΩ LQM Ferrite Core
RS Stock No. 736-1374
Mfr. Part No.SRP1270-100M
BrandBourns
SGD2.163
Each (In a Bag of 10)
units
10 μH 16A 1270 12.9mm - 12.9mm 6.5mm - 12.9 x 12.9 x 6.5mm Yes ±20% 16.8mΩ SRP1270 Iron
RS Stock No. 172-7197
Mfr. Part No.SRR1240-470M
BrandBourns
SGD0.72
Each (On a Reel of 800)
units
47 μH 2A 1240 12.5mm - 12.5mm 4mm - 12.5 x 12.5 x 4mm - ±20% - SRR1240 Ferrite
RS Stock No. 811-9815
Mfr. Part No.LQW15AN1N5D00D
BrandMurata
SGD0.25
Each (In a Bag of 10)
units
1.5 nH 1A 0402 (1005M) 1mm - 0.5mm 0.5mm - 1 x 0.5 x 0.5mm - ±0.5nH 30mΩ LQW15A Ferrite
RS Stock No. 883-0058
Mfr. Part No.744762118A
SGD0.677
Each (In a Bag of 10)
units
18 nH 1A 1008A 2.5mm - 2mm 1.6mm - 2.5 x 2 x 1.6mm Yes - 100mΩ WE-KI Ceramic