Tube cross-reference
8233 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 8233 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 8233
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.
E55L Power - Pentode (NOT beam)
- Base
- NOVAL
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.6 A
Replacement tubes for 8233
The following tubes are recorded as possible replacements for 8233. This direction does not establish that 8233 can replace them.
Power - Pentode (NOT beam)
The database records E55L as a possible replacement for8233.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | Not recorded | NOVAL |
| Socket | B9D | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 A |
Where 8233 can be used as the replacement
In these recorded relationships, 8233 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 8233.
Power - Pentode (NOT beam)
The database records 8233 as a possible replacement forE55L.
No special restrictions are recorded for this substitution.
| Specification | 8233 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - Pentode (NOT beam) |
| Construction | Pentode | Pentode |
| Base | Not recorded | NOVAL |
| Socket | B9D | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.6 A | 0.6 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 8233 specifications →