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. 172-8537
Mfr. Part No.SRR1260-330M
BrandBourns
MYR3.461
Each (On a Reel of 600)
units
33 μH 3A 1260 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% - SRR1260 Ferrite
RS Stock No. 693-4619
Mfr. Part No.SRR1260-330M
BrandBourns
MYR3.48
Each
units
33 μH 3A 1260 12.5mm - 12.5mm 6mm - 12.5 x 12.5 x 6mm Yes ±20% 60mΩ SRR1260 Ferrite
RS Stock No. 868-1480
Mfr. Part No.PM127SH-330M-RC
BrandBourns
MYR5.832
Each (In a Bag of 5)
units
33 μH 3.5A - 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±20% 57mΩ PM127SH Ferrite
RS Stock No. 172-8564
Mfr. Part No.PM127SH-330M-RC
BrandBourns
MYR3.042
Each (On a Reel of 400)
units
33 μH 3.5A - 12.5mm - 12.5mm 7.5mm - 12.5 x 12.5 x 7.5mm Yes ±20% - PM127SH Ferrite
RS Stock No. 813-5700
Mfr. Part No.SRN5040-470M
BrandBourns
MYR1.15
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. 727-2274
Mfr. Part No.SRR1280-330M
BrandBourns
MYR3.68
Each (In a Pack of 5)
units
33 μH 3.5A - - - - - - - - ±20% 57mΩ SRR1280 Ferrite
RS Stock No. 172-9597
Mfr. Part No.SRN6028-150M
BrandBourns
MYR1.24
Each (On a Reel of 1000)
units
15 μH 1.8A - 6mm - 6mm 2.8mm - 6 x 6 x 2.8mm Yes ±20% 114mΩ SRN6028 Ferrite
RS Stock No. 813-5744
Mfr. Part No.SRN6028-150M
BrandBourns
MYR1.243
Each (In a Bag of 10)
units
15 μH 1.8A - 6mm - 6mm 2.8mm - 6 x 6 x 2.8mm Yes ±20% 114mΩ SRN6028 Ferrite
RS Stock No. 172-8544
Mfr. Part No.SRR1280-330M
BrandBourns
MYR2.09
Each (On a Reel of 400)
units
33 μH 3.5A - - - - - - - - ±20% - SRR1280 Ferrite
RS Stock No. 172-7073
Mfr. Part No.SRN5040-470M
BrandBourns
MYR1.176
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. 692-0610
Mfr. Part No.SRU1028-470Y
BrandBourns
MYR2.82
Each
units
47 μH 1.3A - 10mm - 10mm 2.8mm - 10 x 10 x 2.8mm Yes ±30% 167mΩ SRU1028 Ferrite
RS Stock No. 122-9197
Mfr. Part No.5258-RC
BrandBourns
MYR8.73
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. 172-7164
Mfr. Part No.SRU1028-470Y
BrandBourns
MYR2.818
Each (On a Reel of 1000)
units
47 μH 1.3A - 10mm - 10mm 2.8mm - 10 x 10 x 2.8mm Yes ±30% - SRU1028 Ferrite
RS Stock No. 172-9610
Mfr. Part No.SDR0403-5R6ML
BrandBourns
MYR1.465
Each (On a Reel of 2000)
units
5.6 μH 1.6A SMD 4.5mm - 4mm 3.2mm 4.5mm 4.5 Dia. x 3.2mm - ±20% 100mΩ SDR0403 Ferrite DR
RS Stock No. 727-1593
Mfr. Part No.SDR0403-5R6ML
BrandBourns
MYR1.68
Each (In a Pack of 5)
units
5.6 μH 2.4A - 4.5mm - 4mm 3.2mm - 4.5 x 4 x 3.2mm - ±20% 100mΩ SDR0403 Ferrite
RS Stock No. 181-6285
Mfr. Part No.SDR0403-5R6ML
BrandBourns
MYR0.998
Each (On a Reel of 250)
units
5.6 μH 1.6A SMD - - - 3.2mm 4.5mm 4.5 Dia. x 3.2mm - ±20% 100mΩ SDR0403 Ferrite DR
RS Stock No. 172-8664
Mfr. Part No.5258-RC
BrandBourns
MYR8.07
Each (In a Bag of 60)
units
1 mH 1.1A - - - - 31.75mm 12.7mm 12.7 (Dia.) x 31.75mm - - - 5200 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. 181-6882
Mfr. Part No.SDR0805-2R5ML
BrandBourns
MYR1.31
Each (On a Reel of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 172-8422
Mfr. Part No.SRN8040-330M
BrandBourns
MYR1.02
Each (On a Reel of 1000)
units
33 μH 1.9A 8040 8mm - 8mm 4mm - 8 x 8 x 4mm Yes ±20% - SRN8040 Ferrite