BLM21AG102SZ1D Filters

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Ferrite beads and chips are passive components often used as high-frequency noise suppressors in electrical circuits. Specifically, the BLM21AG102SZ1D is a high-frequency noise suppression ferrite bead with a miniature size (2.0 x 1.25 x 1.25 mm) and very low DC resistance and high impedance up to GHz frequencies. The BLM21AG102SZ1D application field and working principle can be explained by looking at the following factors.

Applications

The BLM21AG102SZ1D ferrite bead is mainly used for eliminating unwanted noise in switching power supplies, power amplifiers, and various control and communication circuits. The miniature size and low DC resistance is the key factor that makes it particularly attractive for noise attenuation in multi-layer PCB designs.

The BLM21AG102SZ1D ferrite bead is also designed to effectively suppress noise and signal harmonics, and the high impedance allows signals to be passed through without distortion. In addition, its bulkiness and low insertion loss make it ideal for use in applications with limited space and in low-noise environments.

Working Principle

The BLM21AG102SZ1D ferrite bead works by forcing the current flow to return through its inductive core, resulting in high impedance at high frequencies. This high impedance blocks any high-frequency noise from passing through the bead and thus suppressing it. Because of this, ferrite beads can provide both high-frequency EMI/RFI shielding and low-frequency RFI shielding.

The ferrite bead also works to reduce the amount of high-frequency noise generated by a circuit by dissipating its energy through the beads magnetic core. By doing this, the ferrite bead helps improve the circuit’s power efficiency and reduces EMI/RFI emissions. Additionally, the heat generated by the magnetic core can be used to dissipate the noise produced by the ferrite bead.

Conclusion

In short, the BLM21AG102SZ1D ferrite bead is a high-frequency noise suppression component that is ideal for use in switching power supplies, power amplifiers, and other similar applications. Its miniature size and low DC resistance make it an ideal choice for multi-layer PCB designs, as well as for applications with limited space and in low-noise environments. Additionally, the bead effectively suppresses noise and signal harmonics, and the high impedance allows signals to be passed through without distortion. Overall, the BLM21AG102SZ1D is a reliable and efficient way to suppress noise and offer improved protection from EMI/RFI emissions.

The specific data is subject to PDF, and the above content is for reference