V18073T Toroidal Ferrite Core Common Mode Interference Suppression Magnetic Ring For Electronic Device Cable Filtering

Product Brief

V18073T toroidal ferrite magnetic ring is produced from high‑performance VN02 Mn‑Zn soft ferrite material. It has initial permeability of 650±20%, saturation magnetic flux density up to 330 MT and Curie temperature above 110℃. Benefiting from high electrical resistivity over 10⁵ Ω·m and low relative loss factor at 0.1 MHz, it maintains stable magnetic performance under varying temperature conditions. This component delivers excellent high‑frequency EMI suppression to filter electromagnetic noise on cables and wire harnesses. Optimized for easy threading and mass assembly, it features reliable batch‑to‑batch consistency. Sample testing, bulk supply and customized parameters are available for diverse EMC filtering projects.

Product Description

V18073T ferrite magnetic ring is specially engineered for cable EMI noise elimination. Adopting VN02 manganese‑zinc ferrite, it keeps low loss at high‑frequency working status with limited heat generation during long‑time continuous operation. Its magnetic property will not deteriorate obviously under temperature fluctuation. The toroidal core absorbs high‑frequency interference effectively to improve conducted and radiated interference performance, assisting end products to meet EMC standards including EN55014 and GB9254.

With regular dimensional tolerance, the magnetic ring enables convenient cable threading for automated assembly lines. Strict quality inspection is carried out in every production procedure to secure stable magnetic characteristics of each batch. It can be directly matched with power cords and multi‑core wire harnesses. We serve customers from home appliance, power adapter and industrial control industries, supporting both sample evaluation and large‑volume orders.

Application Scope & Usage

Application Scope

‑ Household appliances: massage devices, beauty equipment, small kitchen appliances and consumer electronics ‑ Power supplies: switching power supply, power adapter and battery charger ‑ Cable and wire harness: power cords, signal cables and multi‑core assembled wires ‑ Industrial equipment: measuring instruments, automation devices and control wiring

Usage

It is mainly applied for EMI noise suppression of various cables. Installed on power lines or signal cables, the magnetic ring suppresses high‑frequency conducted interference and electromagnetic radiation. It strengthens the anti‑interference capacity of whole systems and prevents abnormal equipment operation caused by electromagnetic disturbance, helping finished goods pass domestic and international EMC certification tests.

General FAQ for Ferrite Magnetic Rings

Q1: What does Curie temperature mean for ferrite magnetic ring? A: Curie temperature is the threshold temperature. Once exceeding this value, ferrite will lose magnetism completely and fail EMI suppression function. Products should work below Curie temperature.

Q2: Can ferrite magnetic ring work stably under high‑temperature environment? A: Working temperature must be lower than Curie temperature. Actual stable performance also depends on material temperature coefficient. Please provide your working temperature range for our reference.

Q3: Will ferrite magnetic ring generate extra voltage drop on the cable? A: Under normal AC and DC working condition, the voltage drop caused by ferrite magnetic ring is extremely low and can be ignored for most cable applications.

Q4: Can ferrite core be used for both signal line and power cable? A: Yes, but material grade shall be differentiated. Mn‑Zn suits power cable, Ni‑Zn is more recommended for high‑speed signal cable.

Q5: Why the filtering effect is not ideal after installing ferrite ring? A: Possible reasons: wrong material grade mismatching interference frequency, magnetic saturation caused by large DC current, unreasonable installation position or insufficient wire turns. You can share your test data for our technical support.