Tube cross-reference
12BZ7 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12BZ7 voltage - dual triode (similar). Compare core specifications and verify every restriction before using a replacement.
Where 12BZ7 can be used as the replacement
In these recorded relationships, 12BZ7 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12BZ7.
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12AD7.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.225 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12AX7.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.15 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12AX7A.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.15 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12DF7.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.15 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12DM7.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.13 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for12DT7.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.15 A |
Voltage - Dual Triode (similar)
The database records 12BZ7 as a possible replacement for7025.
- Parallel heater circuits only
| Specification | 12BZ7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 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 12BZ7 specifications →