Tube cross-reference
5LJ8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5LJ8 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5LJ8
The following tubes are recorded as possible replacements for 5LJ8. This direction does not establish that 5LJ8 can replace them.
Voltage Radio Detector Converter
The database records 5GS7 as a possible replacement for5LJ8.
- Not suitable for all circuits
- No-warmup series circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | 9GF |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 5.6 V | 5.4 V |
| Heater current | 0.45 A | 0.45 A |
Where 5LJ8 can be used as the replacement
In these recorded relationships, 5LJ8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5LJ8.
Voltage Radio Detector Converter
The database records 5LJ8 as a possible replacement for5GS7.
- Not suitable for all circuits
| Specification | 5LJ8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | 9GF |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 5.6 V | 5.4 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 5LJ8 specifications →