The VN09 NiZn ferrite ring core features dimensions A30.0mm and B13.0mm. Manufactured from high resistivity soft ferrite, it has an initial permeability of 850 and a Curie temperature exceeding 110℃. It achieves minimum impedance of 105Ω at 25MHz and 190Ω at 100MHz. Controlled dimensional tolerances and strict visual acceptance criteria ensure consistent quality. Boasting low high-frequency loss and stable material characteristics, this ferrite core excels at attenuating high-frequency EMI noise and supports electronic products to meet EMC compliance requirements.

This ferrite core attenuates high-frequency electromagnetic noise travelling along cables. When high-frequency interference flows through the core, electromagnetic energy is converted into heat and dissipated. It suppresses radiated electromagnetic disturbance, maintains signal integrity, and fixes typical problems such as EMC non-compliance, corrupted signals and display flickering.

• Household appliances: kitchen electrics, multi-function cookers, built-in ceramic hobs, power adapters and battery chargers
• Industrial hardware: industrial touch panels, HMI units, sensors, control signal cables and power lines
• Communication wiring: USB, HDMI and different types of signal transmission cables
• Medical apparatus, precision measuring devices and other electronics needing EMC improvement

1.Q: Will multiple ferrite cores on one cable bring better noise reduction?

A: It may improve attenuation but will increase cost and cable bulk. We suggest testing one core first, then adding extra cores only if EMC test still fails.

2.Q: What affects the impedance performance of ferrite cores?
A: Material grade, core size, cable winding turns, operating frequency and working temperature all influence the impedance performance of ferrite cores.

3.Q: Can ferrite cores work for DC power lines?
A: Yes. Ferrite cores block high-frequency noise while allowing DC current to pass through. They are widely used on DC power cords to filter out RF interference.

4.Q: What operating temperature range can this ferrite core withstand?
A: Continuous working temperature should stay below its Curie temperature (>110℃). Beyond this temperature, the ferrite will lose its magnetic properties and filtering capability.

5.Q: Is there any difference between a toroidal ferrite core and a snap-on ferrite core?
A: The magnetic material and filtering principle are identical. Toroidal cores require threading cables through, while snap-on ferrite cores allow quick installation without disconnecting existing cables.