Tube cross-reference
6D6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6D6 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6D6
The following tubes are recorded as possible replacements for 6D6. This direction does not establish that 6D6 can replace them.
Voltage Pentode - Remote Cutoff (single)
The database records 78 as a possible replacement for6D6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 6F | 8F |
| Socket | UX6 | UX6 |
| Base pins | 6 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where 6D6 can be used as the replacement
In these recorded relationships, 6D6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6D6.
Voltage Pentode - Remote Cutoff (single)
The database records 6D6 as a possible replacement for78.
No special restrictions are recorded for this substitution.
| Specification | 6D6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 6F | 8F |
| Socket | UX6 | UX6 |
| Base pins | 6 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 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 6D6 specifications →