Tube cross-reference
25A7G alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 25A7G rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 25A7G
The following tubes are recorded as possible replacements for 25A7G. This direction does not establish that 25A7G can replace them.
Rectifier - Full Wave
The database records 25A7GT as a possible replacement for25A7G.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Pentode-Rectifier | Pentode-Rectifier |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 25 V | 25 V |
| Heater current | 0.3 A | 0.3 A |
Where 25A7G can be used as the replacement
In these recorded relationships, 25A7G is the replacement tube. The listed original tubes are not automatically suitable as replacements for 25A7G.
Rectifier - Full Wave
The database records 25A7G as a possible replacement for25A7GT.
No special restrictions are recorded for this substitution.
| Specification | 25A7G replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Pentode-Rectifier | Pentode-Rectifier |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 25 V | 25 V |
| Heater current | 0.3 A | 0.3 A |
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 25A7G specifications →