The HMC351S8 from Analog Devices is a RF Mixer with RF Frequency 0.7 to 1.2 GHz, LO Frequency 700 MHz to 1.2 GHz, IF Frequency DC to 0.3 GHz, Conversion Loss 9 dB, LO Drive - Power 19 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC351S8 can be seen below.