Tube cross-reference
864 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 864 voltage - triode (single). Compare core specifications and verify every restriction before using a replacement.
Where 864 can be used as the replacement
In these recorded relationships, 864 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 864.
Power - Beam (NOT sweep) (over 1000V 100W)
The database records 864 as a possible replacement for264.
No special restrictions are recorded for this substitution.
| Specification | 864 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (single) | Power - Beam (NOT sweep) (over 1000V 100W) |
| Construction | Triode | BeamPower |
| Base | Not recorded | Not recorded |
| Socket | UX4 | Not recorded |
| Base pins | 4 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.1 V | 6 V |
| Heater current | 0.25 A | 17 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 864 specifications →