Tube cross-reference
1G4G alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1G4G voltage - triode (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 1G4G
The following tubes are recorded as possible replacements for 1G4G. This direction does not establish that 1G4G can replace them.
Voltage - Triode (single)
The database records 1E4G as a possible replacement for1G4G.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | G-6X | 5S |
| Socket | IO | Not recorded |
| Base pins | 8 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Voltage - Triode (single)
The database records 1G4GT as a possible replacement for1G4G.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | G-6X | G-6X |
| Socket | IO | Not recorded |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Where 1G4G can be used as the replacement
In these recorded relationships, 1G4G is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1G4G.
Voltage - Triode (single)
The database records 1G4G as a possible replacement for1E4G.
No special restrictions are recorded for this substitution.
| Specification | 1G4G replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | G-6X | 5S |
| Socket | IO | Not recorded |
| Base pins | 8 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Voltage - Triode (single)
The database records 1G4G as a possible replacement for1G4GT.
No special restrictions are recorded for this substitution.
| Specification | 1G4G replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | G-6X | G-6X |
| Socket | IO | Not recorded |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 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 1G4G specifications →