Tube cross-reference
19AQ5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 19AQ5 power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 19AQ5
The following tubes are recorded as possible replacements for 19AQ5. This direction does not establish that 19AQ5 can replace them.
Power - Pentode (NOT beam)
The database records HL90 as a possible replacement for19AQ5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Pentode (NOT beam) |
| Construction | BeamPower | Pentode |
| Base | 7BZ | Not recorded |
| Socket | B8G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 18.9 V | 19 V |
| Heater current | 0.15 A | 0.15 A |
Where 19AQ5 can be used as the replacement
In these recorded relationships, 19AQ5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 19AQ5.
Power - Pentode (NOT beam)
The database records 19AQ5 as a possible replacement forHL90.
No special restrictions are recorded for this substitution.
| Specification | 19AQ5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Pentode (NOT beam) |
| Construction | BeamPower | Pentode |
| Base | 7BZ | Not recorded |
| Socket | B8G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 18.9 V | 19 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 19AQ5 specifications →