Product Introduction

V180220T toroidal magnetic ring is produced from VN02 soft manganese‑zinc ferrite material. It has an initial permeability of 650 with ±20% tolerance. At 0.1MHz, the relative loss factor is 20×10⁻⁶. Featuring curie temperature above 140℃ and high electrical resistivity, this core keeps stable magnetic performance under varying temperature conditions. Its compact toroidal structure delivers reliable EMI suppression capacity, serving as critical magnetic component for EMC filter solutions. Strict raw material inspection and stable production process guarantee consistent batch quality for mass‑production projects.

Application Range

This ferrite magnetic ring is widely used in consumer electronics, household appliances, industrial control equipment, power supply units, communication devices and wiring harness assemblies. It fits for power cable assembly, signal line processing, adapter power supply, inverter equipment and various electronic modules that require electromagnetic interference suppression. It can be adopted in both commercial consumer products and industrial‑grade hardware systems.

Purpose

The core main purpose is to suppress EMI and RFI high‑frequency noise. It attenuates unwanted interference signals on power cords and signal cables, prevents external electromagnetic noise from disturbing normal operation of electronic circuits, and blocks internal noise from radiating outwards. It helps finished products meet EMC test requirements, reduce signal distortion and improve overall equipment anti‑interference performance.

FAQ for Ferrite Toroidal Core

Q1: What does permeability mean for ferrite toroidal core? A1: Initial permeability reflects the magnetization capability of ferrite material. Higher permeability usually brings better low‑frequency noise suppression effect. Our V180220T adopts VN02 material with permeability 650. Actual filtering performance shall match your working frequency range. Permeability tolerance of this material is ±20% in mass production.

Q2: Why will ferrite core lose its magnetic function? A2: The main trigger is exceeding curie temperature. Once working temperature goes above curie point, ferrite material will lose magnetism permanently or temporarily. V180220T curie temperature is over 140℃. Please keep actual working temperature below this value. Long‑term overheating will also accelerate material aging.

Q3: How to choose correct size of ferrite magnetic ring? A3: Inner diameter must fit your cable or wiring harness outer diameter. Outer dimension and height decide core effective volume. Larger core volume normally provides better noise suppression. You need to confirm cable size, installation space and target interference frequency before selecting proper toroid model.

Q4: What is the difference between manganese‑zinc and nickel‑zinc ferrite core? A4: Manganese‑zinc ferrite works well under medium‑low frequency with high permeability, mostly for power line EMI filtering like our VN02 material V180220T. Nickel‑zinc ferrite applies for higher frequency scenarios. Wrong material selection will lead to poor noise reduction result.

Q5: Can you provide custom ferrite toroidal core? A5: Yes. We support custom dimensions, alternative material grades and special surface treatment. You can offer your drawing, target working frequency and performance requirements. Our engineering team will evaluate feasibility and provide corresponding quotation and lead‑time for custom projects.