Tube cross-reference
U329 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the U329 rectifier - damper diode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for U329
The following tubes are recorded as possible replacements for U329. This direction does not establish that U329 can replace them.
Rectifier - Damper Diode
The database records 25BR3 as a possible replacement forU329.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Damper Diode | Rectifier - Damper Diode |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | E9-11 |
| Socket | Not recorded | Not recorded |
| Base pins | Not recorded | 9 |
| Sections | 1 | 1 |
| Heater voltage | 25 V | 25 V |
| Heater current | 0.3 A | 0.3 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 U329 specifications →