Tube cross-reference
MU14 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the MU14 rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for MU14
The following tubes are recorded as possible replacements for MU14. This direction does not establish that MU14 can replace them.
Rectifier - Full Wave
The database records 6BT4 as a possible replacement forMU14.
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 | OCTAL |
| Socket | B4 | IO |
| Base pins | 4 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 4 V | 6.3 V |
| Heater current | 2.5 A | 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 MU14 specifications →