Power Grid Devices Eimac
Communications
Industrial
Communications - TV Tubes
| Model Number | Emitter | Cooling | Eb,kV | Ib,A | 宝(kw) |
| Oxide | Air | 5 | 3.7 | 10 | |
| Thoriated | Air | 7.5 | 4.4 | 17.6 | |
| 4CX18,000A/8891 | Thoriated | Air | 6.6 | 4.8 | 18.8 |
| Thoriated | Air | 7.8 | 5.9 | 27.5 | |
| Thoriated | Air | 7.8 | 5.4 | 32 | |
| Thoriated | Air | 8.4 | 6.5 | 33 |