This VN09 NiZn ferrite core measures A30.0mm and B13.0mm. It adopts high-resistivity soft ferrite material with initial permeability of 850 and Curie temperature above 110℃. The minimum impedance reaches 105Ω at 25MHz and 190Ω at 100MHz. With strict dimensional tolerance and rigorous appearance inspection standards, the core delivers low high-frequency loss and stable material properties. It offers outstanding performance to suppress high-frequency EMI noise and helps electronic devices pass EMC compliance tests.

It absorbs high-frequency electromagnetic interference on cables. As high-frequency noise passes through the ferrite core, electromagnetic noise energy is converted into heat and dissipated. The core restrains radiated interference, stabilizes signal transmission and resolves common issues including EMC test failure, signal distortion and screen flicker.

• Home appliances: kitchen appliances, multi-cookers, built-in ceramic hobs, power adapters and chargers
• Industrial equipment: industrial touch screens, HMI, sensors, control signal cables and power cords
• Communication cables: USB, HDMI and various signal transmission wires
• Medical instruments, precision measuring instruments and other electronic equipment requiring EMC optimization

1. Q: How to choose between NiZn and MnZn ferrite cores?

A: NiZn ferrite like this VN09 grade is designed for high frequency interference above 1MHz with high resistivity. MnZn ferrite applies to frequencies below 1MHz and is commonly used for common mode inductors. NiZn ferrite is the first choice for high frequency cable EMI suppression.

2. Q: Does higher impedance guarantee better anti-interference performance?

 A: No. Impedance needs to match the actual noise frequency. Only high impedance at the noise frequency can achieve effective filtering, rather than simply pursuing higher impedance value at a single test point.

3. Q: What is the best position to install the ferrite core on cables?

 A: Mount it as close as possible to the equipment connector or interference source. More cable turns through the core bring stronger noise attenuation. The inner diameter shall match the outer diameter of your cable.

4. Q: Are these ferrite cores RoHS and REACH compliant?
   A: All our ferrite cores meet RoHS and REACH requirements. Relevant test reports can be provided for exports to Europe and North America.
   5. Q: Can we customize the size, material or snap-on housing?
      A: Customization is available. We can adjust dimensions and material formulas, and supply matching snap-on plastic housings. MOQ and lead time can be negotiated separately.