Ferrite Toroid Core – 43 Material, 2.4 Inch Diameter

Reliable FT240-43 Ferrite Toroid Core for EMI Suppression

Discover the FT240-43 ferrite toroid core—the easy solution for reducing electromagnetic interference (EMI) in your electronics projects. Made with high-quality 43 material, this large ferrite core is perfect for everyday consumers interested in improving signal quality, reducing radio frequency noise, and boosting the performance of antennas, power supplies, and audio systems.

Key Features of the FT240-43 Ferrite Toroid Core

Material: 43 (High permeability for EMI suppression)
Dimensions: Outer Diameter: 2.40 in (61.0 mm ± 1.3 mm), Inner Diameter: 1.40 in (35.55 mm ± 0.85 mm), Height: 0.50 in (12.7 mm ± 0.5 mm)
AL Value: 1075 ± 20% μH (measured using 10 turns of #28 wire)
Easy to Use: Slip over cables, wires, or create custom chokes and baluns without special tools
Order as Needed: Sold individually – simply order the quantity you need

Popular Uses for Ferrite Toroid Cores

The FT240-43 ferrite toroid core is great for a variety of DIY and home electronics uses:

Building common mode chokes to filter unwanted signals
Creating wideband transformers for antennas (5 – 400 MHz)
Improving RFI suppression in audio, computer, and radio equipment (5 – 500 MHz)
Constructing power transformers for hobbyist radio transmitters (0.5 – 30 MHz)
Perfect for end-fed half-wave (EFHW) antennas and ham radio baluns

Technical Highlights of the FT240-43 Ferrite Core

Material Type: 43 (for broad frequency coverage and effective EMI absorption)
Frequency Range (Application-specific):
- Wideband Transformers: 5 – 400 MHz
- Power Transformers: 0.5 – 30 MHz
- RFI Suppression: 5 – 500 MHz
Inductance Calculation: uH = (AL × Turns²) / 1000
Product Reference: FT240-43 (also labeled FT-240-43)

Why Choose the FT240-43 Ferrite Toroid Core?

This ferrite core is a favorite among everyday hobbyists and electronics enthusiasts. Its large size and high permeability material make it effective for suppressing noise, managing RFI, and supporting reliable transformers and chokes for both DIY and professional projects.

Order your FT240-43 ferrite toroid core today, and enjoy cleaner signals and improved performance in all your electronic devices.

Noise Eliminators