Tube cross-reference
6V4 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6V4 rectifier - full wave. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6V4
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.
EZ80 Rectifier - Full Wave
- Base
- Not recorded
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.6 A
Replacement tubes for 6V4
The following tubes are recorded as possible replacements for 6V4. This direction does not establish that 6V4 can replace them.
Rectifier - Full Wave
The database records EZ80 as a possible replacement for6V4.
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 | 9M | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Rectifier - Full Wave
The database records 6CA4 as a possible replacement for6V4.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | 9M | 9M |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 1 A |
Where 6V4 can be used as the replacement
In these recorded relationships, 6V4 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6V4.
Rectifier - Full Wave
The database records 6V4 as a possible replacement forEZ11.
No special restrictions are recorded for this substitution.
| Specification | 6V4 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | 9M | Not recorded |
| Socket | B9A | Y8A |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.29 A |
Rectifier - Full Wave
The database records 6V4 as a possible replacement forEZ3.
No special restrictions are recorded for this substitution.
| Specification | 6V4 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | 9M | Not recorded |
| Socket | B9A | Not recorded |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.65 A |
Rectifier - Full Wave
The database records 6V4 as a possible replacement forEZ80.
No special restrictions are recorded for this substitution.
| Specification | 6V4 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Full Wave | Rectifier - Full Wave |
| Construction | Rectifier-Rectifier | Rectifier-Rectifier |
| Base | 9M | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 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 6V4 specifications →