---
product_id: 558874625
title: "10 FT37-43 Toroid Ferrite Core"
brand: "fair-rite"
price: "S$36"
currency: SGD
in_stock: false
reviews_count: 5
category: "Fair Rite"
url: https://www.desertcart.sg/products/558874625-10-ft37-43-toroid-ferrite-core
store_origin: SG
region: Singapore
---

# Precise dimensions: 0.375in O.D. ±0.25mm Wideband frequency range: 5-500 MHz Durable, chip-resistant build 10 FT37-43 Toroid Ferrite Core

**Brand:** fair-rite
**Price:** S$36
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Elevate your circuits with precision and power – don’t get left behind!

## Quick Answers

- **What is this?** 10 FT37-43 Toroid Ferrite Core by fair-rite
- **How much does it cost?** S$36 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/558874625-10-ft37-43-toroid-ferrite-core)

## 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 Pack Convenience:** Supplied in bulk packaging, perfect for professionals stocking up on essential components.
- • **Trusted Brand Quality:** Fair-Rite’s industry-leading craftsmanship ensures consistent impedance and performance every time.
- • **Robust & Resilient Design:** Built to withstand drops and handling without chipping, guaranteeing long-term reliability.
- • **Wideband Frequency Performance:** Optimized for 5-500 MHz, ideal for power transformers and RFI suppression across diverse applications.
- • **Precision Engineered Dimensions:** Ensures perfect fit with 0.375in outer diameter and tight tolerances for seamless integration.

## Overview

The 10-pack FT37-43 Toroid Ferrite Cores by Fair-Rite deliver precise dimensions and wideband frequency handling from 5 to 500 MHz, making them perfect for power transformers and RFI suppression. Their durable construction resists chipping and damage, ensuring reliable performance in demanding professional environments. Supplied in bulk, these cores are a must-have for engineers and tech pros aiming for flawless circuit design.

## Description

FT37-43 Toroid Core FairRite Brand Wideband Transformers 5 - 400 MHz Power Transformers 0.5 - 30 MHz RFI Suppression 5 - 500 MHz AL=350 +/- 20 % O.D. = 0.375 in / 9.5 mm +/- 0.25 mm I.D. = 0.187 in. / 4.75 mm +/- 0.10 mm HT. = 0.125 in. / 3.3 mm +/- 0.25 mm From bulk packaging, not in retail packaging.

Review: Just what I needed
Review: Toroid works, know your sizing before hand and don't be surprised it's small.

## Features

- FT37-43
- Ferrite

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0178IA4PM |
| Are batteries included? | No |
| Best Sellers Rank | #78,000 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Ferrite Cores #7,917 in Lab & Scientific Products |
| Brand | FAIR-RITE |
| Customer Reviews | 4.4 4.4 out of 5 stars (67) |
| Date First Available | 13 September 2023 |
| Item Dimensions LxWxH | 25 x 13 x 51 Millimeters |
| Item Height | 2 Inches |
| Item Weight | 27.2 g |
| Item Width | 0.5 Inches |
| Item part number | 11604 |
| Manufacturer | FAIR-RITE |
| Number of Memory Sticks | 10 |
| Product Dimensions | 2.54 x 1.27 x 5.08 cm; 27.22 g |

## Images

![10 FT37-43 Toroid Ferrite Core - Image 1](https://m.media-amazon.com/images/I/61Bgc0hdmWL.jpg)

## Questions & Answers

**Q: Are these genuine Fair-Rite 5943000201? Or some rando core?**
A: The ones I received seemed genuine, not sure how to tell as they don't label them but they worked for the QRP HF stuff I was doing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed
*by A***. on 15 August 2019*



### ⭐⭐⭐⭐⭐ Toroid works, know your sizing before hand and don't be surprised it's small.
*by S***C on 30 May 2021*



### ⭐⭐⭐⭐ poor packaging
*by R***B on 29 September 2025*



## Frequently Bought Together

- 10 FT37-43 Toroid Ferrite Core
- 10 FT50-43 Ferrite Toroid Core
- BNTECHGO 28 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0122" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors

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**Shop now:** [https://www.desertcart.sg/products/558874625-10-ft37-43-toroid-ferrite-core](https://www.desertcart.sg/products/558874625-10-ft37-43-toroid-ferrite-core)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-21*