The VN09 NiZn ferrite toroid is available with dimensions A30.0mm and B13.0mm. Constructed from high-resistivity soft ferrite material, it comes with an initial permeability of 850 and Curie temperature over 110℃. The component delivers minimum impedance values of 105Ω at 25MHz and 190Ω at 100MHz. Consistent quality is secured through controlled dimensional deviations and rigorous visual acceptance rules. Featuring low high-frequency loss and dependable material stability, this ferrite toroid efficiently attenuates high-frequency EMI noise and assists electronic devices in meeting EMC certification standards.

This ferrite toroid suppresses high-frequency electromagnetic interference running along cables. When unwanted high-frequency noise travels through the core, electromagnetic energy is converted into heat and dissipated. It reduces radiated electromagnetic disturbance, keeps signal integrity intact, and resolves frequent troubles such as EMC test non-compliance, signal degradation and display flickering.

• Household appliances: kitchen appliances, multi-cookers, built-in ceramic hobs, power adapters and chargers
• Industrial machinery: industrial touch screens, HMI panels, sensors, control signal cables and power cords
• Communication wiring: USB, HDMI and various signal transmission cables
• Medical devices, precision measuring instruments and other electronics that require EMC optimization

1.Q: What happens if I use a ferrite core below its effective frequency range?

A: The core shows very low impedance at low frequencies. It will barely filter noise and cannot deliver expected EMI suppression effect.

2.Q: Is surface coating necessary for ferrite toroids?

A: The standard bare ferrite core works for most applications. Coating is optional and mainly offered for scratch resistance or insulation purposes upon customer request.

3.Q: Will ambient humidity affect the magnetic performance of ferrite cores?

A: Normal humidity will not change magnetic properties. Long-term exposure to extreme damp conditions may lead to surface rust and cosmetic defects.

4.Q: Can I wind multiple signal wires together through one ferrite core?

A: It is acceptable for noise suppression. But be cautious of cross-talk between different signal lines when bundled together.

5.Q: How to select the proper ferrite core grade for my EMC project?

A: Confirm the dominant noise frequency first. Choose NiZn grades for high-frequency RF noise, while MnZn grades are suitable for low-frequency power line interference.