Tube cross-reference
4KE8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 4KE8 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Where 4KE8 can be used as the replacement
In these recorded relationships, 4KE8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 4KE8.
Voltage Dual Pentode
The database records 4KE8 as a possible replacement for4BU8.
No special restrictions are recorded for this substitution.
| Specification | 4KE8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Dual Pentode |
| Construction | Pentode-Triode | Pentode-Pentode |
| Base | 9DC | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.5 V | 4.2 V |
| Heater current | 0.6 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 4KE8 specifications →