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