The CST 31418 from Microphase Corporation is a RF Detector with Bias Current 100 µA, Frequency 14 to 18 GHz, Max Input Power 20 dBm, Frequency Flatness ±0.3 to ±0.4 dB, Voltage Sensitivity 2900 to 3000 mV/mW. Tags: Connectorized, Diode Detector. More details for CST 31418 can be seen below.