---
product_id: 23272770
title: "FT-140-43 Ferrite Toroid Core - Amidon | 43 Material"
brand: "fair-rite"
price: "€ 13.33"
currency: EUR
in_stock: true
reviews_count: 8
category: "Fair Rite"
url: https://www.desertcart.fr/products/23272770-ft-140-43-ferrite-toroid-core-amidon-43-material
store_origin: FR
region: France
---

# FT-140-43 Ferrite Toroid Core - Amidon | 43 Material

**Brand:** fair-rite
**Price:** € 13.33
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** FT-140-43 Ferrite Toroid Core - Amidon | 43 Material by fair-rite
- **How much does it cost?** € 13.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/23272770-ft-140-43-ferrite-toroid-core-amidon-43-material)

## Best For

- fair-rite enthusiasts

## Why This Product

- Trusted fair-rite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

FT-140-43 Ferrite Toroid Core - Amidon | 43 Material: desertcart.com: Industrial & Scientific

Review: Great Product, Great Service, and even when things don't go perfectly, Greater Reliability - The folks at FW Electronics are great. This was a product I needed and wanted. I ordered it and the product arrived quickly and painlessly. Nearly all the way good. I opened the packaging and noticed a discrepancy between what I ordered and what I received. Quickly a mistake was realized and communicated to FW-Electronics. Of course, these discrepancies can cause problems if you aren't careful. FW-Electronics sent a replacement just as quickly and without additional cost to me. For most everyone, these are the critical details. Product sold, good product, fast turnaround, etc. All of those things I report about FW - Electronics. Here's the important part of the review: This company made a mistake, initially. These things happen and nobody was upset. Understanding that toroid core mixes are very specific for use in amateur radio applications (as in other applications). So there's a confidence concern in my case when I lack the test equipment to identify the different mixes. FW - Electronics helped me visually identify the core types and sent the correct (though properly labeled) toroid cores without cost to me, and let me keep the incorrect toroids (which I still will readily put to good use at my QTH or to a deserving ham learning to use RF chokes). My point in this detail is I appreciate great products and great service. But I appreciate it so much more when things *don't* go well and the company and staff make it right. Nobody's perfect, but making it perfect when it isn't shows me the company appreciates the customers' work product and respects their own. I'll keep coming back to FW! 73 DE K6RCS
Review: Used for antennas - Used to make 9:1 end fed antennas. Works good. <1.5 swr 10 to 80 meters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0178IABXW |
| Best Sellers Rank | #47,321 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Electronic Ferrites |
| Date First Available | December 23, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.08 ounces |
| Item model number | FT140-43 |
| Manufacturer | FR |
| Product Dimensions | 2 x 1 x 2 inches |

## Images

![FT-140-43 Ferrite Toroid Core - Amidon | 43 Material - Image 1](https://m.media-amazon.com/images/I/61diiIcIasL.jpg)

## Questions & Answers

**Q: How much power will a balun made from an FT140-43 handle?**
A: The maximum power has to do with the permeability of the material and the field strength your coil generates. If you exceed the maximum power, you won't damage the unit, but will incur losses as the ferrite material is saturated and cannot support an increased magnetic field. 

I'm using a single FT140-43 for a 49:1 UNUN (16 gage wire) running at 10 watts max for portable field operations, and it works very well for this application. According to my calculations, it could handle up to 37.5 watts CW or 60 watts SSB. If you need more power, I would recommend stacking two FT140-43s, and you could double the power, i.e. 120 watts SSB / 75 watts CW. If you're looking for even higher power, I would look at using an FT240-43 or FT240-52 core.

**Q: What is the country of origin?**
A: Faur-Rite Brand (the manufacturer) FT140-43 are manufactured in China.

**Q: Where do you put these , on the wire or somewhere else ? I see some say wrapping the wire , do you run it in and out of the ring ?**
A: Yes you run it in and out of the ring as many times as it can.

**Q: Can this be used for long wire unun balun? some sites suggest t-130 hence the question.**
A: Yes. I wrapped mine with #12 antenna wire as a choke between my elevated radials and earth ground. Major improvement to my signal strength. K5AE

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Product, Great Service, and even when things don't go perfectly, Greater Reliability
*by R***L on November 1, 2021*

The folks at FW Electronics are great. This was a product I needed and wanted. I ordered it and the product arrived quickly and painlessly. Nearly all the way good. I opened the packaging and noticed a discrepancy between what I ordered and what I received. Quickly a mistake was realized and communicated to FW-Electronics. Of course, these discrepancies can cause problems if you aren't careful. FW-Electronics sent a replacement just as quickly and without additional cost to me. For most everyone, these are the critical details. Product sold, good product, fast turnaround, etc. All of those things I report about FW - Electronics. Here's the important part of the review: This company made a mistake, initially. These things happen and nobody was upset. Understanding that toroid core mixes are very specific for use in amateur radio applications (as in other applications). So there's a confidence concern in my case when I lack the test equipment to identify the different mixes. FW - Electronics helped me visually identify the core types and sent the correct (though properly labeled) toroid cores without cost to me, and let me keep the incorrect toroids (which I still will readily put to good use at my QTH or to a deserving ham learning to use RF chokes). My point in this detail is I appreciate great products and great service. But I appreciate it so much more when things *don't* go well and the company and staff make it right. Nobody's perfect, but making it perfect when it isn't shows me the company appreciates the customers' work product and respects their own. I'll keep coming back to FW! 73 DE K6RCS

### ⭐⭐⭐⭐⭐ Used for antennas
*by A***R on October 18, 2025*

Used to make 9:1 end fed antennas. Works good. <1.5 swr 10 to 80 meters.

### ⭐⭐⭐⭐⭐ Great, an absolute necessity
*by D***N on January 7, 2026*

Because this is an Amidon core, I can rely on it to perform per its specs. Off-brand cores that "work like" Amidon or FairRite cores simply can't be relied upon to perform as well. This is especially true in antenna systems where high power is used.

## Frequently Bought Together

- FT-140-43 Ferrite Toroid Core - Amidon | 43 Material
- BNTECHGO 16 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0492" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors
- FT-240-43 FT240-43 Ferrite Toroid Core 43 Material

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-09*