The DPX252690DT-5021B1 is a signal conditioning multilayer diplexer manufactured by TDK. It is a high-performance dual band high-power diplexer specifically designed for multiple cell applications that operates in the 698-960 MHz and 1710-2690 MHz frequency bands. It is a surface-mount device, and is composed of two fused filters for the two different frequency bands that are combined into a single package. The diplexer has an ultra-wideband pass-band, low insertion loss, high isolation and excellent reverse isolation. It is designed to be used for cellular, WiMax, LTE, PHS, CDMA, GSM, WCDMA, and other wireless applications.