Tube cross-reference
6CY5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6CY5 voltage tetrode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6CY5
The following tubes are recorded as possible replacements for 6CY5. This direction does not establish that 6CY5 can replace them.
Voltage Tetrode
The database records 7717 as a possible replacement for6CY5.
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 | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6AG5 as a possible replacement for6CY5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | E7-1 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6AK5 as a possible replacement for6CY5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BD |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.175 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6BC5 as a possible replacement for6CY5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BC |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6CE5 as a possible replacement for6CY5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BD |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Tetrode
The database records 6EA5 as a possible replacement for6CY5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Tetrode |
| Construction | Tetrode | Tetrode |
| Base | 7EW | 7EW |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Voltage Tetrode
The database records 6EV5 as a possible replacement for6CY5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Tetrode |
| Construction | Tetrode | Tetrode |
| Base | 7EW | E7-1 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.6 A |
Voltage Radio Detector Converter
The database records 6HS6 as a possible replacement for6CY5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Radio Detector Converter |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BK |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.45 A |
Where 6CY5 can be used as the replacement
In these recorded relationships, 6CY5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6CY5.
Voltage Pentode - Sharp Cutoff (single)
The database records 6CY5 as a possible replacement for6AG5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6CY5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | E7-1 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6CY5 as a possible replacement for6AK5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6CY5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BD |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.175 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6CY5 as a possible replacement for6BC5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6CY5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BC |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6CY5 as a possible replacement for6CE5.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6CY5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BD |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6CY5 as a possible replacement for6HS6.
- Parallel heater circuits only
- Not suitable for all circuits
| Specification | 6CY5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Tetrode | Voltage Radio Detector Converter |
| Construction | Tetrode | Pentode |
| Base | 7EW | 7BK |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 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 6CY5 specifications →