| Manufacturer | Part Number | Description |
|---|---|---|
| Unknown Manufacturer | 3CX800A7 | 3CX400A7 / 3CX800A7 |
| Unknown Manufacturer | 3CX800A7 | 3CX800A7 |
| Unknown Manufacturer | 3CX400A7 | 3CX400A7 / 3CX800A7 |
| PL | 3CX800A7 | High Mu Power Triode |
Svetlana
| 3CX800A7 | High Mu Power Triode |
