Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
| Triode | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OA2403 | Voltage Stabiliser | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OB2 | Voltage Stabiliser | 1957 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM1 | Rectifier HW | 1940 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OA2WA | Voltage Stabiliser | | | 
| |
|
|
|
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM525 | Magnetron | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM5A | Pentode | 1940 | | 
| EF37 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM5B | Pentode | 1940 | | 
| EF37A |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM5C | Pentode | 1940 | IO | 
| OM5B |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OM8 | Octode | 1940 | | 
| AG8 EK32 |
|
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OP41 | Pentode | 1937 | B7 | 
| Pen4B |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OP42 | Pentode | 1937 | | 
| Pen4B |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORA | Triode | 1922 | B4 | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORA-B | Triode | 1922 | I/S1 | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP11 | Photocell | 1959 | | 
| 7633 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP52 | Photocell | 1959 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP60 | Photocell | 1959 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
ORP90 | Photocell | 1958 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
Orpheus MP2 | AF Triode | 1926 | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OS40/1250 | Pentode | 1947 | UX5 | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OS41/1250 | Pentode | 1947 | | 
| 804 CV624 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OS75/60 | Thyratron | | | 
| CV434 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
Osglim | Neon Tube (Trade Name) | | | 
| CV71 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OTH231 | Thyratron | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OTK-4 | Triode | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OTK17 | | | | 
| |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OZ4 | Rectifier FW | | | 
| CV692 |
|
Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |
OZ4A | Rectifier FW | | | 
| CV517 |
|