Tube cross-reference
0Y4 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 0Y4 rectifier - half wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 0Y4
The following tubes are recorded as possible replacements for 0Y4. This direction does not establish that 0Y4 can replace them.
Rectifier - Half Wave
The database records 0Y4G as a possible replacement for0Y4.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | 4BU | 4BU |
| Socket | IO | IO |
| Base pins | 4 | 4 |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
Where 0Y4 can be used as the replacement
In these recorded relationships, 0Y4 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 0Y4.
Rectifier - Half Wave
The database records 0Y4 as a possible replacement for0Y4G.
No special restrictions are recorded for this substitution.
| Specification | 0Y4 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | 4BU | 4BU |
| Socket | IO | IO |
| Base pins | 4 | 4 |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
Verify before substituting
Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.
View the complete 0Y4 specifications →