Toroid Core FT240-43 Ferrite
Product ID: 503239604
⚡High AL value: 1075 ±20% for efficient inductance
📏Precision dimensions: OD 2.40in ±1.3mm
📡Wideband frequency: 5-500 MHz range
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⚙️ Elevate your circuit game with precision ferrite power!
The Toroid Core FT240-43 Ferrite by Fair-Rite is a precision-engineered toroidal core designed for wideband transformers and RFI suppression across 5 to 500 MHz. Featuring a high AL value of 1075 ±20%, it ensures efficient inductance and low noise operation. With exacting dimensions (OD 2.40 inch, ID 1.40 inch, Height 0.50 inch) and robust Type 43 ferrite material, this core is a trusted choice for professionals seeking reliable, high-performance passive components.
| Asin | B0178IA3XU |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | 63,458 in Business, Industry & Science (See Top 100 in Business, Industry & Science) 53 in Ferrite Cores |
| Colour | red-500 |
| Customer Reviews | 4.6 4.6 out of 5 stars (459) 4.6 out of 5 stars |
| Date First Available | 27 Oct. 2015 |
| Guaranteed Software Updates Until | unknown |
| Item Model Number | FT240-43 |
| Item Package Quantity | 1 |
| Item Weight | 118 g |
| Manufacturer | FAIR-RITE |
| Material | Type 43 |
| Measurement System | Metric |
| Noise Level | 30 Decibels |
| Part Number | FT240-43 |
| Product Dimensions | 7.62 x 2.54 x 7.62 cm; 118 g |
User
Does what it says on the tin!
Excellent. Exactly what I was looking for.
User
ferrite Core
Just the job
User
Ferrite Rings review.
Excellent genuine FT240-43 Ferrite Cores, good fast delivery as well,recommended purchase.
User
Em pedido se entrego a tiempo y en buenas condiciones.
El producto llego en buenas condiciones, despues de construir el transformador funiona a la perfeccion gracias Amazon.
User
conforme à la description.
Très bien, je m'en suis servi pour fabriquer un UNUN 9:1 pour une antenne filiare de réception HF, fait bien le taff.
User
Buy buy buy
Perfect for my projects. I built a transformer for an antenna system with these and they are holding up great, stack 2 or 3 and you'll be set. Great value, easy, and work as intended when used in your project. It knocked out some stray RF on my laptop USB that would disconnect from my radios with every transmission.
User
Excellent Ferrite Core for DIY Balun Projects
I used the FT240-43 ferrite toroid core in my balun build, and it performed exactly as I hoped — solid, reliable, and very forgiving for amateur builds. The 43-mix material offers good broadband performance, making it ideal for HF baluns that cover a wide range of frequencies without excessive loss.Winding onto the core is straightforward even for larger gauge wire, and the core’s smooth surface makes it easier to dress the turns neatly. Once assembled, the balun exhibits low loss and stable impedance transformation across the intended HF range. That translates into improved SWR and cleaner feedline current, especially noticeable on multiband antennas.Pros:• Great broadband performance: Works well across HF bands with minimal loss.• Easy to work with: Winding and handling are straightforward even with heavier wire.• Consistent results: Baluns built with FT240-43 show stable, predictable performance.• Good for HF & multiband: Excellent choice for 1:1 current baluns, 4:1 impedance transformers, and similar builds.Cons:• Not ideal for VHF/UHF: Ferrite #43 isn’t optimized for higher-frequency VHF/UHF applications (but for HF baluns it’s spot on).Overall, the FT240-43 toroid core is a reliable, high-value choice for any ham radio or antenna project that needs a quality ferrite core balun. I’ll definitely be using more of these in future builds.
User
Beware of other brands! Buy these.
I struggled with the "green 2-pack" ferrites from amazon and i suspected they were defective (i was right) until I ordered two of these. They worked as expected and had low VSWR on the VNA when winding a 49:1 unun and testing into a 2450 ohm resistive load. Other "green" Amazon torroids were unable to achieve any better than 3:1 VSWR! These were 1.5:1 in the same setup.
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