Tube cross-reference
3V4 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3V4 power - pentode single (not beam) (under 10w). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 3V4
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.
DL94 Power - Pentode Single (NOT beam) (under 10W)
- Base
- Miniature
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 1.4 V
- Heater current
- 0.1 A
Replacement tubes for 3V4
The following tubes are recorded as possible replacements for 3V4. This direction does not establish that 3V4 can replace them.
Power - Pentode Single (NOT beam) (under 10W)
The database records DL94 as a possible replacement for3V4.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | 6BX | Miniature |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.05 A | 0.1 A |
Power - Pentode (NOT beam)
The database records 3V4WA as a possible replacement for3V4.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 6BX | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 2.5 V |
| Heater current | 0.05 A | 0.05 A |
Power - Pentode Single (NOT beam) (under 10W)
The database records 3C4 as a possible replacement for3V4.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | 6BX | 6BX |
| Socket | B7G | Not recorded |
| Base pins | 7 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Power - Beam (NOT sweep)
The database records 3E5 as a possible replacement for3V4.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Beam (NOT sweep) |
| Construction | Pentode | BeamPower |
| Base | 6BX | 6BX |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 2.8 V |
| Heater current | 0.05 A | 0.05 A |
Where 3V4 can be used as the replacement
In these recorded relationships, 3V4 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 3V4.
Power - Pentode Single (NOT beam) (under 10W)
The database records 3V4 as a possible replacement forDL94.
No special restrictions are recorded for this substitution.
| Specification | 3V4 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | 6BX | Miniature |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.05 A | 0.1 A |
Power - Pentode Single (NOT beam) (under 10W)
The database records 3V4 as a possible replacement for3C4.
- Parallel heater circuits only
| Specification | 3V4 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | 6BX | 6BX |
| Socket | B7G | Not recorded |
| Base pins | 7 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Power - Beam (NOT sweep)
The database records 3V4 as a possible replacement for3E5.
- Parallel heater circuits only
| Specification | 3V4 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Beam (NOT sweep) |
| Construction | Pentode | BeamPower |
| Base | 6BX | 6BX |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 2.8 V | 2.8 V |
| Heater current | 0.05 A | 0.05 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 3V4 specifications →