Tube cross-reference
UY89 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the UY89 rectifier - half wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for UY89
The following tubes are recorded as possible replacements for UY89. This direction does not establish that UY89 can replace them.
Rectifier - Half Wave
The database records 38A3 as a possible replacement forUY89.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Half Wave | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | Noval | Not recorded |
| Socket | B9A | B9A |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 31 V | 38 V |
| Heater current | 0.1 A | 0.1 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 UY89 specifications →