Is there a surface mountable or bare-die alternative to the HMC-C019? Does hittite sell the die that's used inside the device? I don't immediately see any board-level parts that meet our requirement of high switching speed (~4 ns), SPST, and good up to 12 GHz. I understand that the packaging is an extremely important part of the high performance of this switch, but is there anything at all comparable that could go on a board? Are you using an existing die you sell in a funny way?
The HMC-C019 consists of 2 HMC547 die in series. As long as you optimized the layout for isolation there is no reason a PCB version of the HMC-C019 should not work as well.