Tube cross-reference
U43 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the U43 rectifier - tv line scan boost. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for U43
The following tubes are recorded as possible replacements for U43. This direction does not establish that U43 can replace them.
Rectifier - TV Line Scan Boost
The database records 6X2 as a possible replacement forU43.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 6X2 |
| Socket | Not recorded | Not recorded |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.09 A | 0.09 A |
Where U43 can be used as the replacement
In these recorded relationships, U43 is the replacement tube. The listed original tubes are not automatically suitable as replacements for U43.
Rectifier - TV Line Scan Boost
The database records U43 as a possible replacement for6X2.
No special restrictions are recorded for this substitution.
| Specification | U43 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 6X2 |
| Socket | Not recorded | Not recorded |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.09 A | 0.09 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 U43 specifications →