Tube cross-reference
7AG7 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 7AG7 voltage pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 7AG7
The following tubes are recorded as possible replacements for 7AG7. This direction does not establish that 7AG7 can replace them.
Voltage Pentode - Remote Cutoff (single)
The database records 7AH7 as a possible replacement for7AG7.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 A | 0.15 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7G7 as a possible replacement for7AG7.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 A | 0.45 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7T7 as a possible replacement for7AG7.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 A | 0.3 A |
Where 7AG7 can be used as the replacement
In these recorded relationships, 7AG7 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 7AG7.
Voltage Pentode - Remote Cutoff (single)
The database records 7AG7 as a possible replacement for7AH7.
No special restrictions are recorded for this substitution.
| Specification | 7AG7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 A | 0.15 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7AG7 as a possible replacement for7G7.
- Parallel heater circuits only
| Specification | 7AG7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 A | 0.45 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7AG7 as a possible replacement for7T7.
- Parallel heater circuits only
| Specification | 7AG7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 7 V | 6.3 V |
| Heater current | 0.16 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 7AG7 specifications →