Tube cross-reference
889RA alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 889RA power - triode. Compare core specifications and verify every restriction before using a replacement.
Where 889RA can be used as the replacement
In these recorded relationships, 889RA is the replacement tube. The listed original tubes are not automatically suitable as replacements for 889RA.
Power - Triode (over 1000V 100W)
The database records 889RA as a possible replacement for5667.
No special restrictions are recorded for this substitution.
| Specification | 889RA replacement | Original tube |
|---|---|---|
| Tube type | Power - Triode | 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 | 11 V | 11 V |
| Heater current | 120 A | 120 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 889RA specifications →