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.
Description:
Wurth Elektronik WE-PMI series multilayer surface mount inductor
is compact and magnetically shielded to suppress cross talk. These multilayer inductors are suitable for use in high current applications up to 2.5A, DCR values below 0.2 Ω, Operating temperature range: -40°C ...
Description:
SRP1038A Series inductors have a shielded constructionCarbonyl powder
coreHigh saturation currentInductance range is 0.22 to 47 μHApplications include Automotive systems (Driver assistant, Information, Entertainment and Lighting), DC/DC converters and Power supplies.
Description:
Applications include, Mains filters, Power electronics and SMPS.
Compact size Toroidal core with sector winding High attenuation of common mode interferences in low and middle frequency range Recommended for reflow soldering.
Description:
WE-TPC Series is extremely flat power inductor with
high current capabilityMagnetically shielded which results in a low leakage fieldOperating temperature: –40 to +125°CApplications: Portable power (e.g. PDA, digital camera, PCMCIA cards and displays); DC/DC converter; Embedded PC; Mobile data gathering, ...
