Tube cross-reference
12SY7GT alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12SY7GT voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 12SY7GT
The following tubes are recorded as possible replacements for 12SY7GT. This direction does not establish that 12SY7GT can replace them.
Voltage Radio Detector Converter
The database records 12SA7 as a possible replacement for12SY7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8RV |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage Radio Detector Converter
The database records 12SA7GT as a possible replacement for12SY7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8AD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage Radio Detector Converter
The database records 12SY7 as a possible replacement for12SY7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8RV |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where 12SY7GT can be used as the replacement
In these recorded relationships, 12SY7GT is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12SY7GT.
Voltage Radio Detector Converter
The database records 12SY7GT as a possible replacement for12SA7.
No special restrictions are recorded for this substitution.
| Specification | 12SY7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8RV |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage Radio Detector Converter
The database records 12SY7GT as a possible replacement for12SA7GT.
No special restrictions are recorded for this substitution.
| Specification | 12SY7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8AD |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage Radio Detector Converter
The database records 12SY7GT as a possible replacement for12SY7.
No special restrictions are recorded for this substitution.
| Specification | 12SY7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 8ADV | 8RV |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| 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 12SY7GT specifications →