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 precautions should be taken when winding wires onto toroidal magnetic cores

A1 Avoid excessive force that may crack the core. Keep wire arrangement neat to prevent overlapping short circuits. Ensure complete insulation between winding wire and core surface to avoid electric leakage risk.

Q2 How does magnetic core gap affect the overall working performance

A2 Adding air gap will reduce effective permeability and inductance value, but greatly improve anti DC bias capacity. It can delay magnetic saturation under large current for power circuit designs.

Q3 Will long term storage change the magnetic parameters of magnetic cores

A3 Qualified soft magnetic cores will not change magnetic performance under proper dry storage. Long term damp or high temperature environment may damage surface coating and bring indirect influence to finished products.

Q4 What causes inconsistent inductance among magnetic core samples of the same model

A4 Material tolerance, dimensional deviation, winding process difference and testing environment will all cause inductance inconsistency. Strict incoming inspection and standardized winding operation can reduce such deviation.

Q5 Can magnetic cores work under pulse current operating conditions

A5 Magnetic cores can adapt to pulse current applications. Users need to confirm peak current and pulse frequency. Excessive peak magnetic flux will trigger saturation and lead to filter function failure.

How to select the appropriate magnetic core material for specific applications

Can the performance of a magnetic core be affected by temperature changes

What are the common failure modes and troubleshooting methods of magnetic cores