Tube cross-reference
1T4WA alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1T4WA voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Where 1T4WA can be used as the replacement
In these recorded relationships, 1T4WA is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1T4WA.
Voltage Pentode or Tetrode (under 100V)
The database records 1T4WA as a possible replacement for1T4.
No special restrictions are recorded for this substitution.
| Specification | 1T4WA replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | 6AR | 8AR |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.4 V |
| Heater current | 0.05 A | 0.05 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 1T4WA specifications →