The HMC423MS8 from Analog Devices is a RF Mixer with RF Frequency 0.6 to 1.3 GHz, LO Frequency 600 MHz to 1.3 GHz, IF Frequency DC to 0.4 GHz, Conversion Loss 8 dB, P1dB 6.5 to 8 dBm. Tags: Surface Mount, Double Balanced Mixer. More details for HMC423MS8 can be seen below.