Product Introduction

This toroidal magnetic core is produced from high‑performance VN02 soft magnetic material. It delivers stable initial permeability of 650 with ±20 percent tolerance, featuring low relative loss factor at 0.1MHz, high saturation magnetic flux density and superior electrical resistivity. The closed ring structure effectively reduces magnetic leakage. This core maintains steady magnetic properties across varying working temperatures, supporting long‑time continuous operation. It serves as key magnetic component to build inductors and common mode chokes for EMC noise suppression in various electronic power equipments.

Product Overview

VN02 material magnetic core is a cost‑effective soft magnetic toroidal core designed for EMC filter applications. It balances permeability loss performance and saturation characteristics. Its curie temperature exceeds 140 degree celsius with high resistivity over 10⁵ Ω.m. Thanks to stable temperature coefficient and moderate coercivity, the magnetic parameters will not fluctuate severely under complex working conditions. Customers can wind copper wire directly on the core to manufacture common mode chokes and EMI filter inductors. It supports mass production and can meet general industrial electronic reliability requirements.

Application Scope & Usages

1. Common mode choke coils for switching power supply units
2. EMC filter components for industrial control equipment
3. EMI noise suppression for new energy power conversion devices
4. Power line anti‑interference inductors for household electrical appliances
5. Signal filtering and noise reduction for communication power modules
6. Inductor assembly for battery charging and energy storage equipment

5 General FAQ for Magnetic Cores

Q1 What is the main function of a toroidal magnetic core A1 Toroidal magnetic core is used to build inductors and chokes. It mainly suppresses electromagnetic interference noise and stabilizes current signal inside electronic circuits.

Q2 Does larger core size always mean better filtering performance A2 Not exactly. Filtering effect depends on material property working frequency and winding design. Larger size only provides higher saturation current under the same material.

Q3 What influence will winding turns bring to magnetic core performance A3 More winding turns can raise initial inductance value, yet too many turns may cause saturation problem under large current and increase coil resistance loss.

Q4 What is DC bias effect for magnetic cores A4 DC bias means direct current flows through winding coils. It will lower effective permeability and inductance value of magnetic core, even trigger magnetic saturation under heavy current.

Q5 Can magnetic cores eliminate radiated interference completely A5 Magnetic cores mainly handle conducted interference. To solve radiated noise, you need to combine with capacitors shielding structure and reasonable circuit layout.