What is a Shielded Inductor Used for? How to Choose Power Inductors for LCD TVs

What is a Shielded Inductor Used for in LCD TVs and How to Choose the Right One?

In the world of electronics, shielded inductors play a critical role in ensuring device performance and reliability. For applications like LCD TVs, where power stability and electromagnetic interference (EMI) suppression are paramount, these components are indispensable. But what is a shielded inductor used for? Simply put, it minimizes EMI by containing magnetic fields within a shielded structure, preventing noise from disrupting sensitive circuits.This is especially crucial for LCD TVs, which require clean power delivery to avoid screen flickering, signal distortion, or audio noise.

Why Choose a Shielded Inductor for LCD TV?

LCD TVs rely on efficient power management systems, including DC/DC converters and voltage regulation modules. Here, shielded inductors like the SDRS series surface mount inductor provide:

EMI Suppression: Their shielded design reduces interference with nearby components, ensuring pristine video and audio output4.
High Current Handling: With currents up to 2.65A (e.g., SDRS1205 series), they support the high-power demands of modern LCD TVs.
Compact Size: Surface-mount designs (e.g., SDRS0603) save space, making them ideal for slim TV designs.

How to Choose a Power Inductor for Your Application

Selecting the right power inductor involves evaluating key parameters:

Inductance Value: Match the inductor’s μH rating to your circuit’s requirements. For example, SDRS series offers values from 10μH to 820μH.
Current Rating: Ensure the inductor’s saturation current exceeds your peak operating current to avoid performance degradation. The SDRS1205 series, for instance, supports up to 2.65A.
DCR (DC Resistance): Lower DCR (e.g., 0.05Ω in SDRS1205) minimizes power loss and heat generation.
Shielding: Opt for shielded inductors in noise-sensitive environments like LCD TVs or communication equipment.

The SDRS series surface mount inductor exemplifies these traits, offering shielded, high-current solutions tailored for LCD TVs, DC/DC converters, and portable devices.

Applications Beyond LCD TVs

While shielded inductors for LCD TVs are a common use case, they’re also vital in:

DC/DC converters.
Portable communication equipment.
Automotive and medical electronics.

Conclusion

When designing power supplies for LCD TVs or other electronics, how to choose a power inductor boils down to understanding your circuit’s needs and selecting a component that balances size, performance, and cost. The SDRS series surface mount inductor stands out for its shielded design, high current capacity, and versatility.For more details on our products, contact us at sales@ferrtx.com.

August 25, 2025