The BLM15A_SH 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. BLM15A series generates an impedance from the relatively low frequencies. Therefore BLM15A series is effective in noise suppression in a wide frequency range (30MHz to several hundred MHz).