Tube cross-reference
41 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 41 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 41
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.
VT48 NEW (being researched)
- Base
- Not recorded
- Socket
- Not recorded
- Base pins
- Not recorded
- Sections
- 1
- Heater voltage
- Not recorded
- Heater current
- Not recorded
Replacement tubes for 41
The following tubes are recorded as possible replacements for 41. This direction does not establish that 41 can replace them.
Power - Pentode (NOT beam)
The database records 42 as a possible replacement for41.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 6B | 6B |
| Socket | B6 | B6 |
| Base pins | 6 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.4 A | 0.7 A |
Where 41 can be used as the replacement
In these recorded relationships, 41 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 41.
Power - Pentode (NOT beam)
The database records 41 as a possible replacement for42.
- Parallel heater circuits only
| Specification | 41 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | 6B | 6B |
| Socket | B6 | B6 |
| Base pins | 6 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.4 A | 0.7 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 41 specifications →