Tube cross-reference
E90Z alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the E90Z rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for E90Z
The following tubes are recorded as possible replacements for E90Z. This direction does not establish that E90Z can replace them.
Rectifier - Full Wave
The database records 6X4 as a possible replacement forE90Z.
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 | 5S |
| Socket | B7G | B7G |
| Base pins | Not recorded | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | Not recorded | 0.6 A |
Where E90Z can be used as the replacement
In these recorded relationships, E90Z is the replacement tube. The listed original tubes are not automatically suitable as replacements for E90Z.
Rectifier - Full Wave
The database records E90Z as a possible replacement for6X4.
No special restrictions are recorded for this substitution.
| Specification | E90Z replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | Not recorded | 5S |
| Socket | B7G | B7G |
| Base pins | Not recorded | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | Not recorded | 0.6 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 E90Z specifications →