---
product_id: 482911766
title: "Amidon FT-140-43 Ferrite Toroid Core 43 Material"
brand: "fair-rite"
price: "16000 Ft"
currency: HUF
in_stock: false
reviews_count: 5
category: "Fair Rite"
url: https://www.desertcart.hu/products/482911766-amidon-ft-140-43-ferrite-toroid-core-43-material
store_origin: HU
region: Hungary
---

# High AL value: 885 ± 20% μH Precision dimensions: OD 35.55mm, ID 23mm, Ht 12.7mm Wideband frequency range: 5-500 MHz Amidon FT-140-43 Ferrite Toroid Core 43 Material

**Brand:** fair-rite
**Price:** 16000 Ft
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Elevate your RF game with precision ferrite power!

## Quick Answers

- **What is this?** Amidon FT-140-43 Ferrite Toroid Core 43 Material by fair-rite
- **How much does it cost?** 16000 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/482911766-amidon-ft-140-43-ferrite-toroid-core-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

## Key Features

- • **Bulk Packaging for Pros:** Cost-effective bulk supply tailored for engineers and hobbyists who demand both value and performance without retail markup.
- • **Trusted Brand Reliability:** Manufactured by Fair-Rite, a leader in ferrite cores, ensuring quality and durability for professional-grade electronics projects.
- • **Versatile Application Ready:** Ideal for power transformers (0.5-30 MHz) and amateur radio antenna builds, enabling low SWR and efficient signal transmission.
- • **Engineered for RF Excellence:** Optimized Type 43 ferrite material ensures superior performance across 5-500 MHz frequencies, perfect for wideband transformers and RFI suppression.
- • **Precision Crafted Dimensions:** Exact outer and inner diameters with tight tolerances guarantee consistent inductance and reliable circuit integration.

## Overview

The Amidon FT-140-43 Ferrite Toroid Core features a high AL value of 885 ± 20% μH, optimized Type 43 ferrite material, and precise dimensions (OD 35.55mm, ID 23mm, Height 12.7mm). Designed for wideband transformers and RFI suppression across 5-500 MHz, it’s a trusted component for amateur radio and power transformer applications, delivered in bulk packaging for professional use.

## Description

One FT140-43 Toroid Core Brand: Fair-Rite AL=885 +/- 20 % uH=(AL*Turns2)/1000 Wideband Transformers 5 - 400 MHz Power Transformers 0.5 - 30 MHz RFI Suppression 5 - 500 MHz OD= 1.400 in / 35.55 mm +/- 0.75 mm ID = 0.900 in / 23.0 mm +/- 0.55 mm Ht = 0.500 in / 12.7 mm +/- 0.50 mm From bulk packaging, not in retail packaging.

Review: Great Product, Great Service, and even when things don't go perfectly, Greater Reliability
Review: Used for antennas

## Features

- FT140-43
- Ferrite

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0178IABXW |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 172,180 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 171 in Ferrite Cores |
| Customer Reviews | 4.8 4.8 out of 5 stars (286) |
| Date First Available | 27 Oct. 2015 |
| Item Weight | 59 g |
| Item model number | FT140-43 |
| Manufacturer | FAIR-RITE |
| Material | Type 43 Ferrite |
| Measurement System | English |
| Part number | FT140-43 |
| Product Dimensions | 5.08 x 2.54 x 5.08 cm; 58.97 g |

## Images

![Amidon FT-140-43 Ferrite Toroid Core 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 1 November 2021*



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



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



## 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 Hungary*
*Store origin: HU*
*Last updated: 2026-02-16*