0 pins are on the high power RF circuit board.Input RF type Multiplier of the Evaluation board.Using the HMC443 search parameter, you can discover variants of the RF Board.PCB is the one that mounts RF Board.
106137-HMC443LP4 Features
0 pins Multiplier Type
106137-HMC443LP4 Applications
There are a lot of Analog Devices Inc. 106137-HMC443LP4 RF Boards applications.