Raytheon 5678 Pentode Tube

The 5678 is a filament type, subminiature pentode designed for service in RF applications requiring economy of space, weight, and battery drain.  A coated metallic shield jus used and connected to head #3. The flexible terminal leads may be soldered or welded to circuit components without the use of sockets. Standard subminiature sockets may be used by cutting the leads to 0.20" length.