Tube cross-reference
EF22 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EF22 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for EF22
The following tubes are recorded as possible replacements for EF22. This direction does not establish that EF22 can replace them.
Voltage Pentode - Remote Cutoff (single)
The database records 7A7 as a possible replacement forEF22.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Where EF22 can be used as the replacement
In these recorded relationships, EF22 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EF22.
Voltage Pentode - Remote Cutoff (single)
The database records EF22 as a possible replacement for7A7.
- Parallel heater circuits only
| Specification | EF22 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Pentode - Remote Cutoff (single)
The database records EF22 as a possible replacement for7H7.
- Parallel heater circuits only
| Specification | EF22 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 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 EF22 specifications →