Tube cross-reference
12AT6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12AT6 voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 12AT6
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.
HBC90 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 12AT6
The following tubes are recorded as possible replacements for 12AT6. This direction does not establish that 12AT6 can replace them.
Voltage - Dual Triode (similar)
The database records 12BC32 as a possible replacement for12AT6.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Dual Triode (similar) |
| Construction | Diode-Diode-Triode | Triode-Triode |
| Base | 7BT | Not recorded |
| Socket | B7G | Not recorded |
| Base pins | 7 | Not recorded |
| Sections | 3 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records HBC91 as a possible replacement for12AT6.
No special restrictions are recorded for this substitution.
| 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 | 7BT | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | Not recorded |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 12AV6 as a possible replacement for12AT6.
No special restrictions are recorded for this substitution.
| 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 | 7BT | 7BT |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 12BK6 as a possible replacement for12AT6.
No special restrictions are recorded for this substitution.
| 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 | 7BT | 7BT-0-2 |
| Socket | B7G | Not recorded |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 12BT6 as a possible replacement for12AT6.
No special restrictions are recorded for this substitution.
| 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 | 7BT | 7BT-0-2 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where 12AT6 can be used as the replacement
In these recorded relationships, 12AT6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12AT6.
Voltage - Triode (with diode, heptode or hexode)
The database records 12AT6 as a possible replacement for12AV6.
No special restrictions are recorded for this substitution.
| Specification | 12AT6 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 | 7BT | 7BT |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 12AT6 as a possible replacement for12BK6.
No special restrictions are recorded for this substitution.
| Specification | 12AT6 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 | 7BT | 7BT-0-2 |
| Socket | B7G | Not recorded |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Triode (with diode, heptode or hexode)
The database records 12AT6 as a possible replacement for12BT6.
No special restrictions are recorded for this substitution.
| Specification | 12AT6 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 | 7BT | 7BT-0-2 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 3 | 3 |
| 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 12AT6 specifications →