Tube cross-reference
6BD11 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6BD11 voltage dual triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6BD11
The following tubes are recorded as possible replacements for 6BD11. This direction does not establish that 6BD11 can replace them.
Voltage Dual Triode Pentode
The database records 6AF11 as a possible replacement for6BD11.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Dual Triode Pentode | Voltage Dual Triode Pentode |
| Construction | Pentode-Triode-Triode | Pentode-Triode-Triode |
| Base | 12DP | E12-70 |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 1.05 A | 1.05 A |
Where 6BD11 can be used as the replacement
In these recorded relationships, 6BD11 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6BD11.
Voltage Dual Triode Pentode
The database records 6BD11 as a possible replacement for6AF11.
No special restrictions are recorded for this substitution.
| Specification | 6BD11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Dual Triode Pentode | Voltage Dual Triode Pentode |
| Construction | Pentode-Triode-Triode | Pentode-Triode-Triode |
| Base | 12DP | E12-70 |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 1.05 A | 1.05 A |
Voltage Dual Triode Pentode
The database records 6BD11 as a possible replacement for6AS11.
No special restrictions are recorded for this substitution.
| Specification | 6BD11 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Dual Triode Pentode | Voltage Dual Triode Pentode |
| Construction | Pentode-Triode-Triode | Pentode-Triode-Triode |
| Base | 12DP | 12DP |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 1.05 A | 1.05 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 6BD11 specifications →