The BLM15HB221SN1D is an EMI filter beading, chip, and array manufactured by Murata. It is a 220 ohms, high-speed GHz filter designed to reduce electromagnetic interference from electronic components. The filter is equipped with ferrite beads, chips, and arrays that are designed to absorb EMI and prevent interference with other devices or components. The filter is suitable for use in a wide range of applications including automobiles, consumer electronics, and industrial applications. The filter comes with a 10-year guarantee and has an operating temperature range of -40 to +125 °C. It is housed in a compact 1.6mm x 0.85mm package, making it ideal for use in tight spaces.