Tube cross-reference
12BX6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12BX6 voltage pentode - high frequency (single). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 12BX6
The following tubes are recorded as possible replacements for 12BX6. This direction does not establish that 12BX6 can replace them.
10F18
Foreign To AmericanVoltage Pentode - Remote Cutoff (single)
The database records 10F18 as a possible replacement for12BX6.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - High Frequency (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 13 V |
| Heater current | 0.15 A | 0.1 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 12BX6 specifications →