Tube cross-reference
12Q7G alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12Q7G voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 12Q7G
The following tubes are recorded as possible replacements for 12Q7G. This direction does not establish that 12Q7G can replace them.
Voltage - Triode (with diode, heptode or hexode)
The database records 12Q7GT as a possible replacement for12Q7G.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Diode-Diode-Triode | Diode-Diode-Triode |
| Base | Not recorded | 7V |
| Socket | Not recorded | IO |
| Base pins | Not recorded | 8 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where 12Q7G can be used as the replacement
In these recorded relationships, 12Q7G is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12Q7G.
Voltage - Triode (with diode, heptode or hexode)
The database records 12Q7G as a possible replacement for12Q7GT.
No special restrictions are recorded for this substitution.
| Specification | 12Q7G replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Diode-Diode-Triode | Diode-Diode-Triode |
| Base | Not recorded | 7V |
| Socket | Not recorded | IO |
| Base pins | Not recorded | 8 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 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 12Q7G specifications →