Tube cross-reference
7591A alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 7591A power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.
Where 7591A can be used as the replacement
In these recorded relationships, 7591A is the replacement tube. The listed original tubes are not automatically suitable as replacements for 7591A.
Power - Beam (NOT sweep)
The database records 7591A as a possible replacement for7591.
No special restrictions are recorded for this substitution.
| Specification | 7591A replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.8 A | 0.8 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 7591A specifications →