Tube cross-reference
S6F12 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the S6F12 voltage pentode - high frequency (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for S6F12
The following tubes are recorded as possible replacements for S6F12. This direction does not establish that S6F12 can replace them.
Voltage Pentode - Sharp Cutoff (single)
The database records 6AM6 as a possible replacement forS6F12.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - High Frequency (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7DB |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where S6F12 can be used as the replacement
In these recorded relationships, S6F12 is the replacement tube. The listed original tubes are not automatically suitable as replacements for S6F12.
Voltage Pentode - Sharp Cutoff (single)
The database records S6F12 as a possible replacement for6AM6.
No special restrictions are recorded for this substitution.
| Specification | S6F12 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - High Frequency (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7DB |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| 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 S6F12 specifications →