The BLM15B series chip Ferrite Bead is designed to function nearly as a resistor at noise frequencies, which greatly reduces the possibility of resonance and leaves signal wave forms undistorted. BLM series is effective in circuits without stable ground lines because BLM series does not need a connection to ground. The nickel barrier structure of the external electrodes provides excellent solder heat resistance. BLM15B series can minimize attenuation of the signal waveform due to its sharp impedance characteristics. Various impedance are available to match signal frequency.