Tube cross-reference
7724 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 7724 voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Where 7724 can be used as the replacement
In these recorded relationships, 7724 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 7724.
Voltage - Triode (with diode, heptode or hexode)
The database records 7724 as a possible replacement for14GT8.
No special restrictions are recorded for this substitution.
| Specification | 7724 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Diode-Diode-Triode | Diode-Diode-Triode |
| Base | Not recorded | 9KR |
| Socket | B9A | B9A |
| Base pins | Not recorded | 9 |
| Sections | 3 | 3 |
| Heater voltage | 14 V | 14 V |
| Heater current | 0.15 A | 0.15 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 7724 specifications →