Tube cross-reference
2W3 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 2W3 rectifier - half wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 2W3
The following tubes are recorded as possible replacements for 2W3. This direction does not establish that 2W3 can replace them.
Rectifier - Half Wave
The database records 2W3GT as a possible replacement for2W3.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | 4X | 4X |
| Socket | IO | Not recorded |
| Base pins | 8 | 4 |
| Sections | 1 | 1 |
| Heater voltage | 2.5 V | 2.5 V |
| Heater current | 1.5 A | 1.5 A |
Where 2W3 can be used as the replacement
In these recorded relationships, 2W3 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 2W3.
Rectifier - Half Wave
The database records 2W3 as a possible replacement for2W3GT.
No special restrictions are recorded for this substitution.
| Specification | 2W3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | 4X | 4X |
| Socket | IO | Not recorded |
| Base pins | 8 | 4 |
| Sections | 1 | 1 |
| Heater voltage | 2.5 V | 2.5 V |
| Heater current | 1.5 A | 1.5 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 2W3 specifications →