Tube cross-reference
2X2A alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 2X2A rectifier - half wave. Compare core specifications and verify every restriction before using a replacement.
Where 2X2A can be used as the replacement
In these recorded relationships, 2X2A is the replacement tube. The listed original tubes are not automatically suitable as replacements for 2X2A.
Rectifier - Half Wave
The database records 2X2A as a possible replacement for2Y2.
No special restrictions are recorded for this substitution.
| Specification | 2X2A replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | 4AB | Not recorded |
| Socket | UX4 | Not recorded |
| Base pins | 4 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 2.5 V | 2.5 V |
| Heater current | 1.75 A | 1.75 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 2X2A specifications →