| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| PM12 | S21 | S207 | 215SG | SG215 |
| PM12A | S24 | S215 | 220SG | S215A |
| PM12M | VS24 | S208 | 220VSG | S215VM |
| - | H2 | WD2 | 210RC | H210 |
| PM1HL | H210 | HD2 | 210HF | HL2 |
| PM2DX | HL210 | SD2 | 210Det | HL2 |
| - | L210 | TD2 | 210LF | L2 |
| PM2A | P215 | ZD2 | 215P | P22A |
| PM2A | LP2 | YD2 | 220P | P220 |
| - | P2 | UD2N | 230XP | P240 |
| PM202 | - | E235 | - | - |
| PM22A | PT2 | P225 | 220PT | Pen220A |
| PM2B | B21 | E220B | 240B | 220B |
| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| PM14 | S410 | S409 | 41SG | - |
| PM3A | H410 | W420 | 410RC | - |
| PM3 | - | H412 | 410HF | - |
| PM4DX | HL410 | A430 | 410LF | - |
| PM4 | P410 | E414 | 410P | - |
| PM254 | - | E425 | 425XP | P425 |
| PM24A | PT425 | P425 | - | - |
| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| AC044 | PX4 | K435/10 | 4XP | PP3/250 |
| D024 | PX25 | K480 | - | PP5/400 |
| DO60 | DA60 | K450/50 | - | - |
| PM24M | - | P435 | PT41B | - |
| PM24B | PT25 | P440 | - | - |
| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| - | - | S415N | - | - |
| - | MS4B | S410N | MSG/LA | AC/SG |
| VP4 | VMP4 | S434N | MVSPen | - |
| SP4 | MSP4 | S435N | MSPen | - |
| 904V | MH41 | A440N | 41MH | AC2/HL |
| 104V | ML4 | E430N | - | ACP |
| - | - | B430N | - | - |
| Pen/4V | PT4 | P440N | MP/Pen | AC/Pen |
| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| SP20 | - | S2035N | - | - |
| VP20 | - | S2034N | - | - |
| HL20 | - | A2040N | - | - |
| - | - | E2020N | - | - |
| - | - | B2030N | - | - |
| - | - | P2020N | - | - |
| Mullard | Marconi-Osram. | Triotron. | Cossor. | Mazda. |
| DW2 | U10 | G470 | 506BU | UU60/250 |
| DW3 or 4 | U14 | G4120 | 460BU | UU120/500 |
| - | - | G4100 | - | - |
| - | - | G4150 | - | - |
