Power Grid Devices Eimac
Science - Electron Sources
| Product Description | Emitter | Model Number |
| Y-646 electron gun | Oxide | Y-646 |
| Y-646B electron gun | Dispenser | Y-646B |
| Y-646E electron gun | Dispenser | Y-646E |
| Y-796 electron gun | Dispenser | Y-796 |
| Y-809 electron gun | Dispenser | Y-809 |
| Y-824 electron gun | Dispenser | Y-824 |
| Y-845 electron gun | Dispenser | Y-845 |
| YU-156 electron gun | Dispenser | YU-156 |
| YU-171 electron gun | Dispenser | YU-171 |
| YU-180 electron gun | - | YU-180 |