Tube cross-reference
6F30 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6F30 voltage pentode - sharp cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6F30
The following tubes are recorded as possible replacements for 6F30. This direction does not establish that 6F30 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 6EJ7 as a possible replacement for6F30.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9A0 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.45 A |
Where 6F30 can be used as the replacement
In these recorded relationships, 6F30 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6F30.
Voltage Pentode - Sharp Cutoff (single)
The database records 6F30 as a possible replacement for6EJ7.
No special restrictions are recorded for this substitution.
| Specification | 6F30 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Sharp Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9A0 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 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 6F30 specifications →