Tube cross-reference
6T7G alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6T7G voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6T7G
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.
6Q6G Power - Beam (NOT sweep)
- Base
- 7
- Socket
- IO
- Base pins
- 7
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.15 A
Replacement tubes for 6T7G
The following tubes are recorded as possible replacements for 6T7G. This direction does not establish that 6T7G can replace them.
Voltage - Triode (with diode, heptode or hexode)
The database records 6B6G as a possible replacement for6T7G.
- Parallel heater circuits only
| 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 | 7V | 7V |
| Socket | IO | IO |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6Q7 as a possible replacement for6T7G.
- Parallel heater circuits only
| 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 | 7V | 8 |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6Q7G as a possible replacement for6T7G.
- Parallel heater circuits only
| 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 | 7V | InternationalOctal |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6Q7GT as a possible replacement for6T7G.
- Parallel heater circuits only
| 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 | 7V | InternationalOctal |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Where 6T7G can be used as the replacement
In these recorded relationships, 6T7G is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6T7G.
Voltage - Triode (with diode, heptode or hexode)
The database records 6T7G as a possible replacement for6B6G.
- Parallel heater circuits only
| Specification | 6T7G 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 | 7V | 7V |
| Socket | IO | IO |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6T7G as a possible replacement for6Q7.
- Parallel heater circuits only
| Specification | 6T7G 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 | 7V | 8 |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6T7G as a possible replacement for6Q7G.
- Parallel heater circuits only
| Specification | 6T7G 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 | 7V | InternationalOctal |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 A | 0.3 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 6T7G as a possible replacement for6Q7GT.
- Parallel heater circuits only
| Specification | 6T7G 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 | 7V | InternationalOctal |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.15 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 6T7G specifications →