Tube cross-reference
7717 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 7717 voltage tetrode. Compare core specifications and verify every restriction before using a replacement.
Where 7717 can be used as the replacement
In these recorded relationships, 7717 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 7717.
Voltage Tetrode
The database records 7717 as a possible replacement for6CY5.
No special restrictions are recorded for this substitution.
| Specification | 7717 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Tetrode |
| Construction | Tetrode | Tetrode |
| Base | Not recorded | 7EW |
| Socket | B9A | B7G |
| Base pins | 9 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 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 7717 specifications →