BK1608HS330-TV Filters

Ferrite beads and chips are components that are made of sintered magnetic ceramic material with oxide mainly. Namely, it is usually a combination of iron in different shapes, with oxides and silicates. BK1608HS330-TV is a ferrite bead commonly used in today\'s electronic appliances. Its size is as small as 1.6mm*0.8mm cylinder. It does an excellent job in suppressing conducted EMI, and its impedance is around 330 ohm in a frequency range of 1.8MHz-30MHz. What’s more, it is able to deliver further theretical limiting on various application fields.

Application Field

As the precious business from SMSC, BK1608HS330-TV exhibits great performance in a variety of application fields. One of the main application fields is manufacturing automotive electronics. The automotive industry requires products with high reliability, low electromagnetic interference, small size, light weight and easy to install. The critical issue with high power consumption automotive electronics is large level EMI which threatens the function of other electronics parts. By utilizing its low profile and small size, BK1608HS330-TV is suitable to be used in automotive EMI designs for suppressing conducted EMI.

Apart from automotive industry, BK1608HS330-TV can be widely used in consumer electronics. Especially for notebook PCs. The design for notebooks has become more advanced over time, thus making them contain multiple interfaces, such as USB, HDMI, and SATA. These interfaces cause a high level of noise and severe power drops. Installing a BK1608HS330-TV ferrite bead in the same environment will prevent the noise and the power drops and thus ensure the performance and durability of the notebook PCs.

Working Principle

The BK1608HS330-TV ferrite bead works on the basis of magnetic background noise reduction. This type of ferrite bead is made of magnetic material, which has the property of blocking and absorbing the radio frequency (RF) signals on a certain frequency band. The inductance value of the BK1608HS330-TV bead is 330 ohms, meaning it is suitable to be used in the frequency range of 1.8MHz-30MHz. When the energy is propagated into the bead, it will be strongly absorbed and trapped inside, which can prevent the further propagation of energy and thus effectively block the RF signals.

Besides absorbing the noise, the capacitance of the ferrite bead also plays a great role in its working principle. The high capacitance value of the ferrite bead is capable of storing the energy, and then releasing it when there are loads (such as a short circuit) in its circuitry. This capability of wave attenuation gives the ferrite bead the chance to absorb the noise pulses, thus preventing the high-speed devices from interference. In addition, the capacitance of the ferrite bead can also be used to reduce the speed of the signal or to even filter it out. That is how the ferrite bead works in suppressing the conducted EMI from occurring and protect the circuitry.

In short, BK1608HS330-TV devices are capable of Attenuating on-off transients, suppress conducted EMI and connecting with the main logic board with just two lines. With the features above, these devices are widely used in many application fields and make a great contribution to the daily electronics.