T1G-140/050 - Ferrite Toroid Core µi=125 for EMI filters and RF baluns (equivalent to FT140-61 | 5961002701)

Technical Specifications

The MagWave T1G-140/050 is a ferrite component from the T1G series, designed for high-frequency RF and HF applications. Thanks to the 1G (61) ferromagnetic mix, it is particularly suitable for use in VHF and higher frequencies, offering excellent performance in both amateur radio and industrial settings.

• Applications:
  • EMI/RFI Suppression (Single Turn) 200 MHz – 2000 MHz (2 GHz)
  • EMI/RFI Suppression (Multiple Turns) 25 MHz – 300 MHz
  • Broadband Transformers 15 MHz – 200 MHz
  • Balun/Unun (impedance transformation) 10 MHz – 100 MHz (or up to 300 MHz for Balun)
  • Inductive/Resonant Applications Up to about 25 MHz
• Initial permeability: 125 µi
• Dimensions: outer diameter 36 mm, inner diameter 23 mm, height 12.7 mm
• AL (nH): 140 ±25%
• Curie temperature: >200 °C

Benefits

• High operating frequency: ideal for VHF and UHF
• Noise suppression: effective in reducing high-frequency interference
• Power handling capability: larger size allows handling up to 1 kW
• Versatility: suitable for RF transformers, 1:1 and 4:1 baluns, and line filters
• Thermal stability: excellent performance even at high temperatures

Amidon FT140-61, Fair-Rite 5961002701 and Others: What's the Difference?

The 1.4-inch (36 mm) ferrite toroid with initial permeability µi 125 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 represents a solid alternative with excellent value for money. It offers:

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

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

Cross-reference table