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. 724-1677
Mfr. Part No.DLW21SN900SQ2L
BrandMurata
MYR2.26
Each (In a Pack of 10)
units
- 330mA 0805 (2012M) 2mm - 1.2mm 1.2mm - 2 x 1.2 x 1.2mm - ±25% 350mΩ DLW21S -
RS Stock No. 786-9525
Mfr. Part No.SLF12555T-100M3R4-PF
BrandTDK
MYR4.748
Each (In a Bag of 5)
units
10 μH 4.3A - 12.5mm - 12.5mm 5.5mm - 12.5 x 12.5 x 5.5mm Yes ±20% 21.5mΩ SLF Ferrite
RS Stock No. 617-1732
Mfr. Part No.74477420
MYR7.20
Each
units
100 μH 570mA - 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 650mΩ WE-PD2 Ferrite
RS Stock No. 500-2994
Mfr. Part No.744231121
MYR4.34
Each (In a Pack of 5)
units
- 370mA 0805 (2012M) 2mm - 1.2mm 1.2mm - 2 x 1.2 x 1.2mm - ±25% 300mΩ WE-CNSW SMD Ferrite
RS Stock No. 604-2870
Mfr. Part No.NL453232T-470J-PF
BrandTDK
MYR1.43
Each (In a Pack of 10)
units
47 μH 140mA 1812 (4532M) 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - ±5% - -
RS Stock No. 813-5674
Mfr. Part No.SRN5040-4R7M
BrandBourns
MYR1.01
Each (In a Bag of 10)
units
4.7 μH 3.1A - 5mm - 5mm 4mm - 5 x 5 x 4mm Yes ±20% 35mΩ SRN5040 Ferrite
RS Stock No. 916-4178
Mfr. Part No.NL453232T-470J-PF
BrandTDK
MYR1.43
Each (In a Pack of 25)
units
47 μH 140mA 4532 4.5mm - 3.2mm 3.2mm - 4.5 x 3.2 x 3.2mm - - NL Ferrite
RS Stock No. 163-3235
Mfr. Part No.744231121
MYR3.501
Each (On a Reel of 2000)
units
- 370mA 0805 (2012M) 2mm - 1.2mm 1.2mm - 2 x 1.2 x 1.2mm - ±25% 300mΩ WE-CNSW SMD Ferrite
RS Stock No. 863-0791
Mfr. Part No.74438336010
MYR5.93
Each (In a Bag of 5)
units
1 μH 4A 3020 3mm - 3mm 2mm - 3 x 3 x 2mm Yes ±20% 32mΩ WE-MAPI Magnetic Iron Alloy
RS Stock No. 839-0926
Mfr. Part No.LQP03TN2N0B02D
BrandMurata
MYR0.192
Each (In a Bag of 50)
units
2 nH 600mA 0201 (0603M) 0.6mm - 0.3mm 0.3mm - 0.6 x 0.3 x 0.3mm Yes ±0.1nH 150mΩ LQP Non-Magnetic Core
RS Stock No. 172-9645
Mfr. Part No.SDR0805-2R5ML
BrandBourns
MYR1.803
Each (On a Reel of 1000)
units
2.5 μH 5A - 7.8mm - 7.8mm 5.3mm - 7.8 x 7.8 x 5.3mm - ±20% 20mΩ SDR0805 Ferrite
RS Stock No. 163-4865
Mfr. Part No.7440690068
MYR4.79
Each (On a Reel of 550)
units
6.8 μH 1.75A 8015 8mm - 1.35mm 8mm - 8 x 8 x 1.35mm Yes ±20% 110mΩ WE-TPC Ferrite
RS Stock No. 898-8181
Mfr. Part No.744913050
MYR3.52
Each (In a Bag of 5)
units
5 nH 4A 3136 3.68mm - 3.05mm 3.18mm - 3.68 x 3.05 x 3.18mm - - 1.8mΩ WE-CAIR -
RS Stock No. 167-5680
Mfr. Part No.LQG15HN10NJ02D
BrandMurata
MYR0.093
Each (On a Reel of 10000)
units
10 nH 300mA 0402 (1005M) - - - - - 1 x 0.5 x 0.5mm - ±5% 350mΩ LQG15H -
RS Stock No. 181-6882
Mfr. Part No.SDR0805-2R5ML
BrandBourns
MYR1.31
Each (On a Reel of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 800-7973
Mfr. Part No.744043331
MYR7.35
Each
units
330 μH 285mA 4828 4.8mm - 2.8mm 4.8mm - 4.8 x 4.8 x 2.8mm Yes ±30% 1.7Ω WE-TPC Ferrite
RS Stock No. 172-7035
Mfr. Part No.CM322522-2R2KL
BrandBourns
MYR0.413
Each (On a Reel of 2000)
units
2.2 μH 190mA 1210 (3225M) 3.2mm - 2.5mm 2.2mm - 3.2 x 2.5 x 2.2mm - ±10% - CM32 Ferrite
RS Stock No. 163-3756
Mfr. Part No.74477420
MYR4.58
Each (On a Reel of 1500)
units
100 μH 570mA - 5.8mm - 5.2mm 4.5mm - 5.8 x 5.2 x 4.5mm No ±10% 650mΩ WE-PD2 Ferrite
RS Stock No. 800-8166
Mfr. Part No.7440690068
MYR7.36
Each
units
6.8 μH 1.75A 8015 8mm - 1.35mm 8mm - 8 x 8 x 1.35mm Yes ±20% 110mΩ WE-TPC Ferrite
RS Stock No. 770-1725
Mfr. Part No.DRA125-820-R
MYR8.084
Each (In a Bag of 5)
units
82 μH 2.406A 0125 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 135mΩ DRA Ferrite
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