More than 25 years ago Infineon (Siemens) was the first company that got GaAs devices qualified for the use in Satellites.
In this time period several 10k of components are delivered to space agencies and payload Manufacturers worldwide.
Now an era comes to an end. We are limited on chip supply and therefore we declare all Infineon GaAs devices as obsolete.
We will support existing designs as long as possible but we are not able support any new designs.
There is no one to one replacement but we recommend you to have a look at our HiRel Silicon Bipolar Transistor technology.
E.g. the BFY740B could be a candidate.
We thank you very much for your understanding.