IXYS - 6.0-18.0 GHz balanced amp module

The 15 mil alumina substrates and 10 mil copper FET ridge
are brazed onto the 25 mil carrier using AuGe preform. The GaAs FETs are
attached to the Cu ridge using AuSn preform. All capacitors are attached using
AuSn preforms. The flanges are designed to accommodate 0-80 UNF-2A socket or
Fillister head screws on .400 center-to-center hole spacing. The modules are
mechanically and electrically designed to be cascaded.

Source: MwT