Part number: 267252-1 is an EMI Filter manufactured by API Technologies. It is a high performance, high response attenuator with very wide bandpass characteristics. It features a transmission line design, featuring low insertion loss, low return loss, a wide dynamic range, and a very broad pass band. It also features excellent harmonic distortion suppression in the very high band. It is ideal for use in high-frequency applications requiring large attenuation values, such as RF and microwave transmitters.