Tube cross-reference
6BQ5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6BQ5 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6BQ5
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.
EL84 Power - Pentode (NOT beam)
- Base
- B9A
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.76 A
Replacement tubes for 6BQ5
The following tubes are recorded as possible replacements for 6BQ5. This direction does not establish that 6BQ5 can replace them.
Power - Pentode (NOT beam)
The database records 6P15 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records E84L as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Noval |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records EL84 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records N709 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records 7320 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Beam (NOT sweep)
The database records 7189 as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Beam (NOT sweep) |
| Construction | Pentode | BeamPower |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Beam (NOT sweep)
The database records 7189A as a possible replacement for6BQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Beam (NOT sweep) |
| Construction | Pentode | BeamPower |
| Base | B9A | 9LE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Where 6BQ5 can be used as the replacement
In these recorded relationships, 6BQ5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6BQ5.
Power - Pentode (NOT beam)
The database records 6BQ5 as a possible replacement for6P15.
No special restrictions are recorded for this substitution.
| Specification | 6BQ5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records 6BQ5 as a possible replacement forEL84.
No special restrictions are recorded for this substitution.
| Specification | 6BQ5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 A |
Power - Pentode (NOT beam)
The database records 6BQ5 as a possible replacement forN709.
No special restrictions are recorded for this substitution.
| Specification | 6BQ5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.76 A | 0.76 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 6BQ5 specifications →