Tube cross-reference
EF184 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EF184 voltage pentode. Compare core specifications and verify every restriction before using a replacement.
Exact variations of EF184
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.
6EJ7 Voltage Pentode - Sharp Cutoff (single)
- Base
- 9A0
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.45 A
Replacement tubes for EF184
The following tubes are recorded as possible replacements for EF184. This direction does not establish that EF184 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 6EJ7 as a possible replacement forEF184.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | B9A | 9A0 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.45 A |
Where EF184 can be used as the replacement
In these recorded relationships, EF184 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EF184.
Voltage Pentode - Sharp Cutoff (single)
The database records EF184 as a possible replacement for6EJ7.
No special restrictions are recorded for this substitution.
| Specification | EF184 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | B9A | 9A0 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.45 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 EF184 specifications →