Tube cross-reference
6F6GT alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6F6GT power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6F6GT
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.
IBM NEW (being researched)
- Base
- Not recorded
- Socket
- Not recorded
- Base pins
- Not recorded
- Sections
- 1
- Heater voltage
- Not recorded
- Heater current
- Not recorded
Replacement tubes for 6F6GT
The following tubes are recorded as possible replacements for 6F6GT. This direction does not establish that 6F6GT can replace them.
Power - Pentode (NOT beam)
The database records 6F6 as a possible replacement for6F6GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 7S | 7S |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.7 A | 0.7 A |
Power - Pentode (NOT beam)
The database records 6F6G as a possible replacement for6F6GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 7S | 7S |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.7 A | 0.7 A |
Where 6F6GT can be used as the replacement
In these recorded relationships, 6F6GT is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6F6GT.
Power - Pentode (NOT beam)
The database records 6F6GT as a possible replacement for6F6.
No special restrictions are recorded for this substitution.
| Specification | 6F6GT replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 7S | 7S |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.7 A | 0.7 A |
Power - Pentode (NOT beam)
The database records 6F6GT as a possible replacement for6F6G.
No special restrictions are recorded for this substitution.
| Specification | 6F6GT replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 7S | 7S |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.7 A | 0.7 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 6F6GT specifications →