Tube cross-reference
5771 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5771 power - triode (over 1000v 100w). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5771
The following tubes are recorded as possible replacements for 5771. This direction does not establish that 5771 can replace them.
Power - Triode (over 1000V 100W)
The database records 356 as a possible replacement for5771.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Triode (over 1000V 100W) | Power - Triode (over 1000V 100W) |
| Construction | Triode | Triode |
| Base | Not recorded | Not recorded |
| Socket | Not recorded | Not recorded |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 7.5 V | 7.5 V |
| Heater current | 170 A | 170 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 5771 specifications →