Tube cross-reference
ED500 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the ED500 triode - hv shunt regulator. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for ED500
The following tubes are recorded as possible replacements for ED500. This direction does not establish that ED500 can replace them.
Specialized - Cathode Ray
The database records 6ED4 as a possible replacement forED500.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Specialized - Cathode Ray |
| Construction | Triode | CathodeRay |
| Base | Not recorded | Not recorded |
| Socket | B9D | B12A |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 4 V |
| Heater current | 0.35 A | 1 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 ED500 specifications →