Tube cross-reference
12CU5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12CU5 power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 12CU5
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.
12C5 Power - Beam Single (NOT sweep) (under 10W)
- Base
- 7CV
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 12.6 V
- Heater current
- 0.6 A
Replacement tubes for 12CU5
The following tubes are recorded as possible replacements for 12CU5. This direction does not establish that 12CU5 can replace them.
Power - Beam Single (NOT sweep) (under 10W)
The database records 12AS5 as a possible replacement for12CU5.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam Single (NOT sweep) (under 10W) |
| Construction | BeamPower | BeamPower |
| Base | 7CV | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.6 A | 0.4 A |
Power - Beam Single (NOT sweep) (under 10W)
The database records 12C5 as a possible replacement for12CU5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam Single (NOT sweep) (under 10W) |
| Construction | BeamPower | BeamPower |
| Base | 7CV | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.6 A | 0.6 A |
Power - TV Horizontal Output (sweep)
The database records 12DM5 as a possible replacement for12CU5.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7CV | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.6 A | 0.45 A |
Power - TV Vertical Output
The database records 12R5 as a possible replacement for12CU5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - TV Vertical Output |
| Construction | BeamPower | BeamPower |
| Base | 7CV | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.6 A | 0.3 A |
Where 12CU5 can be used as the replacement
In these recorded relationships, 12CU5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12CU5.
Power - Beam Single (NOT sweep) (under 10W)
The database records 12CU5 as a possible replacement for12C5.
No special restrictions are recorded for this substitution.
| Specification | 12CU5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - Beam Single (NOT sweep) (under 10W) |
| Construction | BeamPower | BeamPower |
| Base | 7CV | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.6 A | 0.6 A |
Power - TV Horizontal Output (sweep)
The database records 12CU5 as a possible replacement for12DM5.
- Parallel heater circuits only
| Specification | 12CU5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Beam (NOT sweep) | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | 7CV | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 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 12CU5 specifications →