Tube cross-reference
412A alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 412A rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 412A
The following tubes are recorded as possible replacements for 412A. This direction does not establish that 412A can replace them.
Rectifier - Full Wave
The database records 6754 as a possible replacement for412A.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | Not recorded | Not recorded |
| Socket | UX4 | B9A |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 1 A | Not recorded |
Where 412A can be used as the replacement
In these recorded relationships, 412A is the replacement tube. The listed original tubes are not automatically suitable as replacements for 412A.
Rectifier - Full Wave
The database records 412A as a possible replacement for6754.
No special restrictions are recorded for this substitution.
| Specification | 412A replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | Not recorded | Not recorded |
| Socket | UX4 | B9A |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 1 A | 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 412A specifications →