1. Product Brief

Manufactured with VN09 grade nickel‑zinc soft ferrite, the V18031 ring‑shaped ferrite core features an initial permeability of 850 and low loss performance. It achieves remarkable high‑frequency noise damping and electromagnetic interference mitigation effects. Rigorous size control ensures uniform performance from batch to batch, perfectly fitting mass production assembly operations. Featuring superior resistivity and great thermal tolerance, this core keeps dependable magnetic performance under varied operating environments. This RoHS‑compliant EMC filter component cuts down common‑mode and high‑frequency electromagnetic interference, helping end‑use products fulfill EMC certification requirements. We deliver prototype samples, small batch orders and large‑volume goods to meet client needs from research validation to commercial mass‑production.

2. Product Description

V18031 toroidal ferrite magnetic ring adopts high‑quality VN09 nickel‑zinc soft ferrite raw material. Its initial permeability reaches 850, with low relative loss factor at 0.1MHz. The physical dimensions are A15.0mm, B14.0mm, C5.0mm, D23.0mm, dimension tolerance ±1.0 mm. High resistivity above 10⁵ Ω·m brings excellent insulation property. Curie temperature is over 130℃, so magnetic characteristics remain stable even when ambient temperature fluctuates. This ferrite toroid core can effectively suppress high‑frequency electromagnetic disturbance, restrain common‑mode noise on power lines and signal lines, reduce signal distortion and electromagnetic crosstalk. Uniform size facilitates winding processing and cable harness assembly. All products meet RoHS environmental requirements, suitable for global export end‑products. Strict incoming material inspection and finished‑product testing guarantee stable quality for every batch.

3. Application Scope & Usages

Application Scope: Widely used in consumer electronics, smart home devices, power adapters and chargers, industrial control equipment, automation devices, communication equipment, inverter and converter modules, office electronic hardware, wiring harness assemblies and other electronic products requiring EMC electromagnetic interference filtering. Usages: Suppress high‑frequency common‑mode interference for power cables, power cords and signal wires Reduce electromagnetic crosstalk and signal distortion of internal wiring harness inside electronic devices Help finished electronic products pass EMC, EMI related compliance tests Filter electromagnetic noise for power supply, adapter and charger assemblies Improve anti‑interference performance for industrial control panels and automation equipment circuits

4. FAQ

Q1: Will winding turns change the filtering performance of ferrite magnetic rings?
A: Yes, winding quantity has obvious influence on noise reduction results. More winding turns usually bring better low‑frequency filtering effect, yet it may raise parasitic capacitance and weaken high‑frequency performance. You need to balance winding turns according to your actual interference frequency.

Q2: Can ferrite magnetic rings work under high‑current operating conditions?
A: Ferrite magnetic ring itself does not conduct electric current. It is applied outside cables. If you work under heavy‑current scenarios, you should focus on cable size and inner hole dimension of the magnetic ring to guarantee smooth cable penetration, instead of over‑current limitation of the ferrite core itself.

Q3: What causes cracking or chipping problems for ferrite magnetic rings?
A: Ferrite material is inherently brittle. Cracks and chips are mainly caused by violent impact, extrusion or improper assembly operations. Damaged magnetic rings will degrade EMI filtering performance. Please handle with care during installation, storage and transportation.

Q4: What is the difference between NiZn and MnZn ferrite magnetic rings?
A: NiZn ferrite fits high‑frequency interference suppression scenario, featuring high resistivity. MnZn ferrite performs better under low‑frequency conditions. Please confirm your working frequency before ordering. Our V18031 model adopts NiZn VN09 material for high‑frequency noise filtering.

Q5: What is your normal packaging method for ferrite magnetic ring shipments?
A: Standard packing adopts anti‑static plastic bags plus carton outer packaging to avoid collision damage during transit. Customized packing is acceptable for large orders. If you have special packaging requirements, please inform us before order confirmation.