This LOT is 10pcs of New Analog Devices Hittite Microwave GaAs MMIC Double-Balanced Mixer, Part Number: HMC219MS8TR in MSOP-8 package. I also have PCB made for Hittite Mixer which this IC can use, check the PCB in my store under Develop PCB section.

General Spec for HMC219MS8:

• RF/LO Frequency: 4.5-9.0GHz
• IF: DC-2.5GHz
• LO Level: +13dBm
• Conversion Loss: 8.5dB
• LO/RF Isolation: 25dB
• LO/IF Isolation: 25dB
• Input IP3: +21dBm
• Input P1: +10dBm
• Package: MSOP-8

Hittite HMC219MS8 Data sheet:

http://hittite.com/content/documents/data_sheet/hmc219ms8.pdf