FT-37-43 / 5943000201 Ferrite Toroid Core, µi=800, for EMI filters and RF baluns

Technical Features

The MagWave T1V-037/013 toroid is a ferrite component from the T1V series, designed for RF and HF applications. Thanks to the 1V (43) ferrite mix and its compact size, it is ideal for building RF chokes, baluns, and impedance transformers for both amateur and professional use.

• Applications:
  
  • EMI/RFI Suppression (20 MHz – 250 MHz)
  • Balun / RF Transformers (1 MHz – 25 MHz)
• Initial permeability: 800 µi
• Dimensions: outer diameter 9.5 mm, inner diameter 4.8 mm, height 3.18 mm
• AL (nH): approx. 350 ±20%
• Curie temperature: above 130 °C

Benefits

• Compact and efficient: perfect for space-constrained projects
• Noise suppression: excellent for reducing common-mode currents and improving signal quality
• Versatility: compatible with End Fed, OCF antennas and 1:1, 4:1, 9:1 transformers
• Thermal stability: maintains performance even under critical operating conditions

Amidon FT37-43, Fair-Rite 5943000201 and Others – What's the Difference?

The 0.375-inch (9.5 mm) ferrite toroid with initial permeability µi 800 is available from various manufacturers, including Amidon, Fair-Rite, and others. Although each model may have slight aesthetic, dimensional, or AL value differences, they are technically equivalent products.

Our MagWave™ model is a solid alternative with excellent value for money. It offers:

• High build quality
• Technical specifications equivalent to well-known brands
• Guaranteed compatibility for 1:1 replacements in both amateur and professional projects

Choose MagWave™ for a reliable, high-performance, and cost-effective alternative.

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