Tube cross-reference
6L31 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6L31 power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6L31
The following tubes are recorded as possible replacements for 6L31. This direction does not establish that 6L31 can replace them.
Power - Beam (NOT sweep)
The database records 6AQ5 as a possible replacement for6L31.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7BZ | 7BZ |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Where 6L31 can be used as the replacement
In these recorded relationships, 6L31 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6L31.
Power - Beam (NOT sweep)
The database records 6L31 as a possible replacement for6AQ5.
No special restrictions are recorded for this substitution.
| Specification | 6L31 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7BZ | 7BZ |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Power - Pentode Single (NOT beam) (under 10W)
The database records 6L31 as a possible replacement for6BM5.
No special restrictions are recorded for this substitution.
| Specification | 6L31 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | BeamPower | Pentode |
| Base | 7BZ | 7BZ |
| Socket | B7G | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Power - Beam (NOT sweep)
The database records 6L31 as a possible replacement for6HG5.
No special restrictions are recorded for this substitution.
| Specification | 6L31 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7BZ | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 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 6L31 specifications →