The HMC142C8 is a miniature double-balanced mixer in a non-hermetic ceramic surface mount package that can be used as an upconverter or downconverter. The device is a passive diode/ balun type mixer with high dynamic range. The mixer can handle larger signal levels than most active mixers due to the high third order intercept. MMIC implementation provides exceptional balance in the circuit resulting in high LO/ RF and LO/IF isolations and unit-to-unit consistency. This mixer has applications in point-topoint microwave radios and VSAT ground equipment where small size and surface mount compatibility are important. The HMC142C8 is a mirror image complement to the HMC141C8.