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 Can different shape magnetic cores of same material substitute each other directly A11 Direct substitution is not suggested. Even with same material, core shape determines magnetic leakage and winding space. Sample test is necessary before mass usage.

Q2 What factors decide the suitable working frequency range of magnetic core A12 Material type resistivity and core thickness together decide working frequency band. Different soft magnetic materials fit different frequency noise suppression scenarios.

Q3 Is it necessary to apply insulation coating on magnetic core surface A13 Insulation coating prevents short circuit between copper wire and core body. It is essential for direct winding operation to guarantee product safety.

Q4 Why the finished choke has big difference between tested inductance and theoretical calculation value A14 Deviation comes from material tolerance winding gap wire thickness and testing condition. Actual measured data shall be taken as final reference for application.

Q5 Can magnetic cores be used for both common mode and differential mode filter A15 Same core can be applied for both modes, but winding method and circuit layout are totally different. You need to follow corresponding design rules.