---
product_id: 118388500
title: "UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot"
brand: "hondark"
price: "214 zł"
currency: PLN
in_stock: true
reviews_count: 2
category: "Hondark"
url: https://www.desertcart.pl/products/118388500-uy1658-60-electronics-transformer-core-round-size-9-3-chokes
store_origin: PL
region: Poland
---

# MnZn PC40 ferrite material for 500mt saturation flux 60mm core width for optimal induction Leg diameter 16mm precision UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot

**Brand:** hondark
**Price:** 214 zł
**Availability:** ✅ In Stock

## Summary

> ⚙️ Transform your projects with precision power cores!

## Quick Answers

- **What is this?** UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot by hondark
- **How much does it cost?** 214 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/118388500-uy1658-60-electronics-transformer-core-round-size-9-3-chokes)

## Best For

- hondark enthusiasts

## Why This Product

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

## Key Features

- • **Proven Legacy Design:** Inspired by classic TV flyback transformers, this UU core outperforms traditional EE cores with fewer turns needed, saving time and materials.
- • **Versatile 5-Pair Pack:** Bulk pack of 5 pairs (10 pieces) offers excellent value and ensures you never run out during critical projects.
- • **Premium MnZn PC40 Material:** High saturation flux density (500mt) delivers reliable operation in 10-25kHz frequency ranges, perfect for advanced electronics.
- • **Precision Engineered UU Core:** 16mm leg diameter and 60mm width ensure efficient magnetic flux control for superior transformer performance.
- • **Easy Hand-Winding Compatibility:** Flat ends and robust design allow effortless winding with insulated magnet wire, ideal for custom inductors and transformers.

## Overview

The UY1658/60 Electronics Transformer Core features a 16mm leg diameter and 60mm width, crafted from high-quality MnZn PC40 ferrite material with a 500mt saturation flux density. Sold in packs of 5 pairs, these UU-shaped cores are optimized for 10-25kHz frequency applications, offering superior magnetic performance and easy hand-winding for custom transformer builds. Trusted by professionals for their durability and efficiency, these cores bring legacy TV flyback transformer technology into modern electronics design.

## Description

UU shape transformer ferrite core /isolator ferrite / ferrite bead

Review: El producto cumple con lo prometido en la publicación, obtienes lo que compras.
Review: Careful handling of ferrite parts!! - These are great! Like ceramic, they will crack easily, so handle carefully- don't drop or put too much pressure. So You can VERY EASILY hand wind with insulated wire on flat end- single inductor or double wires coils like transformer. Insulated magnet wire is slightly better than hook up wire , since it is closer to core for induction. I use 4:40 brass threaded rod with 4:40 nuts and washers to hold together, and non magnetic. Strong black duct tape or plastic zip ties can also be used. Ferrite used over 400cycles and best around 10-25Khz frequency. Transformer build formula should be used to prevent saturation shorting of circuit. N turns = E X 10 '8 divided by 4 X F htz X 2000 Bsat X Area core sq cm. Then go over 8 decimal places on calculator. If 1/2 core cracks later, you will have extras to keep going. UU core sets were used in the old style tv's for high voltage flyback transformer so now they are surplus on market. I like these better than the EE core sets with bobbin. The larger thickness of core, the lesss turns required by formula, as it is in the denominator of division. Use formula units in gauss in denominator. PC40 ferrite material is 500mt sat flux density.( See conversion table) Work formula backwards also for the density to see if change of turns still fits with scientific calculator value as less than the Gauss value, so as circuit does not short out. A = B / C X D X E D = B / C X A X E

## Features

- 1.Model:Transformer ferrite core
- 2.Part number : UY1658/60
- 3.Size :Leg diameter=16mm width=60mm leg length=29mm
- 4.Material:MnZn PC40
- 5.Pair: 2pieces,10pieces each pack

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07P7BDFH2 |
| Best Sellers Rank | #415,067 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #184 in Electronic Ferrites |
| Brand | Hondark |
| Customer Reviews | 4.7 4.7 out of 5 stars (10) |
| Manufacturer | Hondark HK Limited |
| Reusability | Single Use |
| UPC | 303621183689 |
| Unit Count | 5.0 Count |

## Product Details

- **Brand:** Hondark
- **Manufacturer:** Hondark HK Limited
- **Reusability:** Single Use
- **UPC:** 303621183689
- **Unit Count:** 5.0 Count

## Images

![UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot - Image 1](https://m.media-amazon.com/images/I/51N72OoVcCL.jpg)
![UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot - Image 2](https://m.media-amazon.com/images/I/51K-hyLrnDL.jpg)
![UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot - Image 3](https://m.media-amazon.com/images/I/51Ejo19uaiL.jpg)
![UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot - Image 4](https://m.media-amazon.com/images/I/61NJ7IztGEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on February 11, 2024*

El producto cumple con lo prometido en la publicación, obtienes lo que compras.

### ⭐⭐⭐⭐⭐ Careful handling of ferrite parts!!
*by R***. on October 10, 2022*

These are great! Like ceramic, they will crack easily, so handle carefully- don't drop or put too much pressure. So You can VERY EASILY hand wind with insulated wire on flat end- single inductor or double wires coils like transformer. Insulated magnet wire is slightly better than hook up wire , since it is closer to core for induction. I use 4:40 brass threaded rod with 4:40 nuts and washers to hold together, and non magnetic. Strong black duct tape or plastic zip ties can also be used. Ferrite used over 400cycles and best around 10-25Khz frequency. Transformer build formula should be used to prevent saturation shorting of circuit. N turns = E X 10 '8 divided by 4 X F htz X 2000 Bsat X Area core sq cm. Then go over 8 decimal places on calculator. If 1/2 core cracks later, you will have extras to keep going. UU core sets were used in the old style tv's for high voltage flyback transformer so now they are surplus on market. I like these better than the EE core sets with bobbin. The larger thickness of core, the lesss turns required by formula, as it is in the denominator of division. Use formula units in gauss in denominator. PC40 ferrite material is 500mt sat flux density.( See conversion table) Work formula backwards also for the density to see if change of turns still fits with scientific calculator value as less than the Gauss value, so as circuit does not short out. A = B / C X D X E D = B / C X A X E

## Frequently Bought Together

- Hondark UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot
- 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
- Emtel 18 AWG - 1 lb (202 feet) 99.9% Pure Copper Wire, Enameled Magnetic Wire for Motor, Transformer, Magnetic Coil, & Electroculture Gardening, Winding Magnet Wire - 220°C (428°F) Thermal Class

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-04-25*