Tube cross-reference
6Z4 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6Z4 rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6Z4
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
84 Rectifier - Full Wave
- Base
- 5D
- Socket
- UX5
- Base pins
- 5
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.5 A
Replacement tubes for 6Z4
The following tubes are recorded as possible replacements for 6Z4. This direction does not establish that 6Z4 can replace them.
Rectifier - Full Wave
The database records 6BX4 as a possible replacement for6Z4.
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 | 5D | 5BS |
| Socket | B7G | B7G |
| Base pins | 5 | 5 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.5 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 6Z4 specifications →