Tube cross-reference
EF36 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EF36 voltage pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for EF36
The following tubes are recorded as possible replacements for EF36. This direction does not establish that EF36 can replace them.
Voltage Radio Detector Converter
The database records 6J7 as a possible replacement forEF36.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Radio Detector Converter |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7R |
| Socket | IO | UX7 |
| Base pins | 8 | 7 |
| 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 EF36 specifications →