Tube cross-reference
6281 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6281 voltage pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6281
The following tubes are recorded as possible replacements for 6281. This direction does not establish that 6281 can replace them.
Voltage Pentode or Tetrode (under 100V)
The database records CK512AX as a possible replacement for6281.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 5J |
| Socket | SUBMINIATURE8 | Not recorded |
| Base pins | 8 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 0.625 V | 0.625 V |
| Heater current | 0.02 A | 0.02 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 6281 specifications →