Tube cross-reference
6F23 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6F23 voltage pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6F23
The following tubes are recorded as possible replacements for 6F23. This direction does not establish that 6F23 can replace them.
Voltage Pentode - High Frequency (single)
The database records 6EL7 as a possible replacement for6F23.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - High Frequency (single) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where 6F23 can be used as the replacement
In these recorded relationships, 6F23 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6F23.
Voltage Pentode
The database records 6F23 as a possible replacement for6BW7.
No special restrictions are recorded for this substitution.
| Specification | 6F23 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | B9A | 9AQ |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Pentode - High Frequency (single)
The database records 6F23 as a possible replacement for6EL7.
No special restrictions are recorded for this substitution.
| Specification | 6F23 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Voltage Pentode - High Frequency (single) |
| Construction | Pentode | Pentode |
| Base | B9A | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 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 6F23 specifications →