Tube cross-reference
3CY5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3CY5 voltage tetrode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 3CY5
The following tubes are recorded as possible replacements for 3CY5. This direction does not establish that 3CY5 can replace them.
Voltage Tetrode
The database records 3EA5 as a possible replacement for3CY5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Tetrode |
| Construction | Tetrode | Tetrode |
| Base | 7EW | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.9 V | 2.9 V |
| Heater current | 0.6 A | 0.45 A |
Voltage Tetrode
The database records 3EV5 as a possible replacement for3CY5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Tetrode |
| Construction | Tetrode | Tetrode |
| Base | 7EW | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.9 V | 2.9 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 3CY5 specifications →