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 How to reduce heating phenomenon of magnetic core in practical equipment A16 You can choose low loss material, lower working magnetic flux density, optimize winding structure and improve heat dissipation condition of whole module.

Q2 Will mechanical impact damage internal magnetic performance of magnetic core A17 Severe impact may produce invisible internal cracks. It will increase core loss and bring unstable performance even if no obvious damage can be seen on surface.

Q3 What is the difference between amorphous core and ferrite core A18 Amorphous core owns higher saturation flux density, better for low and medium frequency large current scenario. Ferrite core fits high frequency relatively small current occasions.

Q4 Can customers customize special size magnetic cores A19 Custom size is available subject to material mould and minimum order quantity. Technical team needs to evaluate drawing and application condition first.

Q5 What test items should be done for incoming inspection of magnetic cores A20 Regular incoming inspection includes dimension measurement, initial permeability test, appearance check, coating integrity inspection and sampling loss performance verification.