Tube cross-reference
7V7 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 7V7 voltage pentode - sharp cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 7V7
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
1231 Voltage Pentode - Sharp Cutoff (single)
- Base
- 8-V
- Socket
- Not recorded
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 7 V
- Heater current
- 0.48 A
Replacement tubes for 7V7
The following tubes are recorded as possible replacements for 7V7. This direction does not establish that 7V7 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 7G7 as a possible replacement for7V7.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7L7 as a possible replacement for7V7.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7T7 as a possible replacement for7V7.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.3 A |
Where 7V7 can be used as the replacement
In these recorded relationships, 7V7 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 7V7.
Voltage Pentode - Sharp Cutoff (single)
The database records 7V7 as a possible replacement for1231.
No special restrictions are recorded for this substitution.
| Specification | 7V7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8-V |
| Socket | B8G | Not recorded |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 7 V |
| Heater current | 0.45 A | 0.48 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7V7 as a possible replacement for7G7.
No special restrictions are recorded for this substitution.
| Specification | 7V7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.45 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7V7 as a possible replacement for7L7.
- Parallel heater circuits only
| Specification | 7V7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 7V7 as a possible replacement for7T7.
- Parallel heater circuits only
| Specification | 7V7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 8V | 8V |
| Socket | B8G | B8G |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.45 A | 0.3 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 7V7 specifications →