Lead Type EMIFIL®

BL0□/BLL/DSS1/VFC/PLT09 Series

Murata offers a variety of lead type EMI suppression filters including: inductor type operating from several MHz to several GHz, capacitor type achieving a great noise suppression effect at frequencies between several MHz and several hundred MHz, and common mode choke coils ideal for noise suppression in DC power supply lines, video and sound signal lines, and balanced transmission interface cables. They can be widely used as high-performance general-purpose EMI suppression filters.

Category	Part Number	Features
Ferrite Beads Inductor	BL01/02/03	・ Inductor type EMI suppression filters designed to operate from several MHz to several GHz. They are widely used as general- purpose noise suppression components to cope with relatively minor noise issues. ・ EMIFIL® Inductor type filters behave as inductors with small inductance at low frequencies, while they produce a resistance- dominated impedance at high frequencies. When serially inserted into a noise transmission path, the resistance component absorbs and prevents the transmission of noise. ・ Effective in noise suppression A wide frequency range (several hundred MHz 30MHz of).
Ferrite Beads Inductor	BLL
Disc Type EMIFIL®	DSS1	・ Capacitor type EMI suppression filters achieving a great noise suppression effect at frequencies between several MHz and several hundred MHz. Widely used as high-performance general- purpose EMI suppression filters. ・ The three-terminal structure decreases residual inductance and greatly improves the noise suppression effect at high frequencies greater than several dozen MHz.
EMIGUARD® (Three-terminal Capacitor with Varistor Function)	VFC	・ EMIGUARD® filters combine the EMI noise suppression function with the surge suppression function of a varistor by using varistor dielectric materials for three-terminal capacitors. ・ Meet the need to suppress both high-frequency noise and high voltage surge. Also effective against surges with extremely fast rise times that cannot be removed by conventional varistors.
Common Mode Choke Coil	PLT09H	・ Attenuate common mode noise that causes problems in balanced transmission lines. They effectively suppress common mode noise with frequencies from several MHz to hundreds of MHz, making them ideal for reducing noise in DC power supply lines, video and sound signal lines, and interface cables

Introducing an example where composite EMI filters are used to eliminate both EMI noise and surge problems
Cases where it is necessary to simultaneously solve EMI noise and surge problems affecting motors used in vehicles and industrial equipment are far from rare. An example is shown of the use of VFC series composite EMI suppression components combining capacitors and varistors to solve such problems.
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