Tube cross-reference
5871 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5871 power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5871
The following tubes are recorded as possible replacements for 5871. This direction does not establish that 5871 can replace them.
Power - TV Vertical Output
The database records 6V6GT as a possible replacement for5871.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - TV Vertical Output |
| Construction | BeamPower | BeamPower |
| Base | 7AC | RETMA 7AC |
| Socket | Not recorded | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Where 5871 can be used as the replacement
In these recorded relationships, 5871 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5871.
Power - Beam (NOT sweep)
The database records 5871 as a possible replacement for6V6.
No special restrictions are recorded for this substitution.
| Specification | 5871 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7AC | 7AC |
| Socket | Not recorded | IO |
| Base pins | 7 | 8 |
| 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 5871 specifications →