The ones starting with 'E' are usually from "Mini-Circuits" but I can't see them listed in their catalog.
Fujitsu also make ceramic MMICs and diode mixers in that package, it might be worth contacting them or checking their web sites.
The transistor Terminator3 is referring to is marked "EVxx" not "360" and it's only about 2mm across. It's a package usually used for HEMT, MMIC and some microwave mixers, the one you found is more than ten times bigger!