Tube cross-reference
12R5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12R5 power - tv vertical output. Compare core specifications and verify every restriction before using a replacement.
Where 12R5 can be used as the replacement
In these recorded relationships, 12R5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 12R5.
Power - Beam Single (NOT sweep) (under 10W)
The database records 12R5 as a possible replacement for12AS5.
- Parallel heater circuits only
| Specification | 12R5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Vertical Output | Power - Beam Single (NOT sweep) (under 10W) |
| Construction | BeamPower | BeamPower |
| Base | Not recorded | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.4 A |
Power - Beam Single (NOT sweep) (under 10W)
The database records 12R5 as a possible replacement for12C5.
No special restrictions are recorded for this substitution.
| Specification | 12R5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Vertical Output | Power - Beam Single (NOT sweep) (under 10W) |
| Construction | BeamPower | BeamPower |
| Base | Not recorded | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.6 A |
Power - Beam (NOT sweep)
The database records 12R5 as a possible replacement for12CU5.
No special restrictions are recorded for this substitution.
| Specification | 12R5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Vertical Output | Power - Beam (NOT sweep) |
| Construction | BeamPower | BeamPower |
| Base | Not recorded | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 A | 0.6 A |
Power - TV Horizontal Output (sweep)
The database records 12R5 as a possible replacement for12DM5.
- Parallel heater circuits only
| Specification | 12R5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Vertical Output | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | Not recorded | 7CV |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.3 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 12R5 specifications →