Ferrite Bead Inductor for EMI Suppression and Noise Filtering
The ferrite bead inductor is designed for high-frequency EMI suppression and noise filtering applications. It offers multiple package options including SMD and through-hole types. The product features low DCR (15mΩ max.) and high current capacity (up to 6.0A), with a rated voltage of 50V. Impedance characteristics: 115Ω min. @25MHz, 170Ω min. @100MHz. It is widely used in noise filtering equipment, amplifiers, switching regulators, power supplies, mobile wireless devices, DC-DC converters, cordless phones, car radios, and GPS devices.
- Impedance (@25MHz) – ≥115Ω
- Impedance (@100MHz) – ≥170Ω
- DCR – ≤15mΩ
- Rated current – ≤6.0A
- Rated voltage – ≤50V
- Package type – SMD / Through-hole
- High-frequency EMI suppression
- Complies with FCC/VDE standards
- Noise filtering equipment
- Amplifiers
- Switching regulators
- Power supplies
- Triac/SCR control circuits
- Modems, PDP/LCD/TV converters
- Mobile wireless devices, DC-DC converters
- Cordless phones, car radios, GPS devices
| Parameter | Value |
|---|---|
| Impedance (@25MHz) | 115Ω Min |
| Impedance (@100MHz) | 170Ω Min |
| DCR | 15mΩ Max |
| Rated voltage | 50V Max |
| Max. Current | 6.0A |
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Q: What is the working principle of a ferrite bead?
A: A ferrite bead presents low impedance (acting like an inductor) at low frequencies, allowing signals to pass through. At high frequencies, it presents high impedance, converting high-frequency noise energy into heat and dissipating it, effectively suppressing high-frequency EMI noise.
Q: How to choose between SMD and through-hole ferrite beads?
A: SMD type is suitable for automated SMT production lines, ideal for high-volume production and high-density PCB layouts. Through-hole type is suitable for wave soldering, allowing easy manual soldering and prototyping. Please choose based on your production process and PCB design.
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