---
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: "$1465"
currency: MXN
in_stock: true
reviews_count: 2
category: "Hondark"
url: https://www.desertcart.mx/products/118388500-uy1658-60-electronics-transformer-core-round-size-9-3-chokes
store_origin: MX
region: Mexico
---

# Compact UU shape 9.3'' size Optimized for 10-25kHz frequency range Precision MnZn PC40 ferrite core UY1658 /60 Electronics Transformer Core Round Size 9.3'' Chokes Ferrite Bead Transformer Ferrite Core MnZn PC40 5pairs per lot

**Brand:** hondark
**Price:** $1465
**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?** $1465 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/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

- • **Compact UU Design:** 9.3-inch round core with 16mm leg diameter fits seamlessly into custom transformer builds.
- • **Versatile Pair Packs:** Available in sets of 5 pairs, perfect for prototyping or small batch production.
- • **Engineered for Efficiency:** High saturation flux density (500mT) ensures minimal energy loss in your circuits.
- • **Precision Material Choice:** MnZn PC40 ferrite delivers superior magnetic properties for stable inductance.
- • **Pro-Level Durability Tips:** Handle with care to avoid cracks—ideal for hand winding with insulated magnet wire.

## Overview

The UY1658/60 Electronics Transformer Core features a robust MnZn PC40 ferrite material in a compact UU shape (9.3'' size) optimized for 10-25kHz frequency applications. Sold in convenient 5-pair lots, these cores are designed for efficient transformer and inductor builds, offering high saturation flux density and reliable magnetic performance favored by professionals and hobbyists alike.

## 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 | #207,034 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #93 in Electronic Ferrites |
| Customer Reviews | 4.7 4.7 out of 5 stars (10) |
| Date First Available | March 2, 2019 |
| Item Weight | 2.1 pounds |
| Manufacturer | Hondark HK Limited |
| Package Dimensions | 7.4 x 7.3 x 4.2 inches |

## 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)

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.mx/products/118388500-uy1658-60-electronics-transformer-core-round-size-9-3-chokes](https://www.desertcart.mx/products/118388500-uy1658-60-electronics-transformer-core-round-size-9-3-chokes)

---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-26*